Cohen Diet Goal Weight Calculator

Cohen Diet Goal Weight Calculator – Calculate Your Ideal Weight :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –light-gray: #e9ecef; –white: #fff; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: var(–text-color); background-color: var(–background-color); margin: 0; padding: 0; display: flex; justify-content: center; padding: 20px 0; } .container { width: 100%; max-width: 960px; background-color: var(–white); padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); display: flex; flex-direction: column; } header { text-align: center; margin-bottom: 30px; border-bottom: 1px solid var(–light-gray); padding-bottom: 20px; } header h1 { color: var(–primary-color); margin-bottom: 10px; font-size: 2.2em; } .summary { font-size: 1.1em; color: #555; margin-bottom: 30px; } .calculator-section { margin-bottom: 40px; padding: 25px; background-color: var(–white); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); } .calculator-section h2 { color: var(–primary-color); text-align: center; margin-bottom: 25px; font-size: 1.8em; } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; } .input-group { display: flex; flex-direction: column; margin-bottom: 15px; } .input-group label { font-weight: bold; margin-bottom: 8px; color: var(–primary-color); display: block; } .input-group input[type="number"], .input-group select { padding: 12px; border: 1px solid var(–light-gray); border-radius: 4px; font-size: 1em; box-sizing: border-box; width: 100%; } .input-group .helper-text { font-size: 0.85em; color: #6c757d; margin-top: 5px; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; min-height: 1.2em; } .button-group { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; } .btn { padding: 12px 20px; border: none; border-radius: 4px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; text-align: center; flex: 1; min-width: 150px; } .btn-primary { background-color: var(–primary-color); color: var(–white); } .btn-primary:hover { background-color: #003b7a; } .btn-success { background-color: var(–success-color); color: var(–white); } .btn-success:hover { background-color: #218838; } .btn-secondary { background-color: var(–light-gray); color: var(–text-color); } .btn-secondary:hover { background-color: #d3d9df; } #results-display { margin-top: 30px; padding: 25px; background-color: var(–light-gray); border-radius: 8px; text-align: center; box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.08); } #results-display h3 { color: var(–primary-color); margin-bottom: 15px; font-size: 1.6em; } .main-result { font-size: 2.5em; font-weight: bold; color: var(–success-color); margin-bottom: 15px; display: inline-block; padding: 10px 20px; background-color: rgba(40, 167, 69, 0.1); border-radius: 5px; } .result-item { margin-bottom: 10px; font-size: 1.1em; color: var(–primary-color); } .result-label { font-weight: bold; color: var(–text-color); } .formula-explanation { font-size: 0.9em; color: #6c757d; margin-top: 20px; text-align: left; } .chart-container { width: 100%; margin-top: 30px; text-align: center; } canvas { max-width: 100%; height: auto; border: 1px solid var(–light-gray); border-radius: 4px; } .chart-caption { font-size: 0.9em; color: #6c757d; margin-top: 10px; } .table-container { margin-top: 30px; overflow-x: auto; } table { width: 100%; border-collapse: collapse; margin-bottom: 20px; border-radius: 4px; overflow: hidden; } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(–light-gray); } thead th { background-color: var(–primary-color); color: var(–white); font-weight: bold; } tbody tr:nth-child(even) { background-color: var(–background-color); } tbody tr:hover { background-color: var(–light-gray); } .table-caption { font-size: 0.9em; color: #6c757d; margin-bottom: 10px; text-align: center; } article { margin-top: 40px; padding: 30px; background-color: var(–white); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); } article h2, article h3 { color: var(–primary-color); margin-top: 30px; margin-bottom: 15px; } article h2 { font-size: 2em; } article h3 { font-size: 1.6em; } article p { margin-bottom: 15px; } article ul, article ol { margin-bottom: 15px; padding-left: 25px; } article li { margin-bottom: 8px; } .faq-item { margin-bottom: 20px; } .faq-question { font-weight: bold; color: var(–primary-color); cursor: pointer; display: block; position: relative; padding-left: 25px; } .faq-question::before { content: '+'; position: absolute; left: 0; font-size: 1.2em; color: var(–primary-color); } .faq-question.active::before { content: '-'; } .faq-answer { display: none; padding-left: 25px; margin-top: 10px; color: #555; } .internal-links-section ul { list-style: none; padding: 0; } .internal-links-section li { margin-bottom: 15px; border-bottom: 1px dashed var(–light-gray); padding-bottom: 10px; } .internal-links-section a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .internal-links-section a:hover { text-decoration: underline; } .internal-links-section p { font-size: 0.9em; color: #666; margin-top: 5px; } /* Responsive adjustments */ @media (max-width: 768px) { .container { padding: 20px; } .btn { flex: 1 1 100%; min-width: auto; } .button-group { flex-direction: column; } header h1 { font-size: 1.8em; } article h2 { font-size: 1.6em; } article h3 { font-size: 1.3em; } }

Cohen Diet Goal Weight Calculator

Calculate your target weight based on the principles of the Cohen Diet, a personalized low-calorie eating plan. Get insights into your potential healthy weight range.

Cohen Diet Goal Weight Calculator

Enter your current weight in kilograms (kg).
Enter your height in centimeters (cm).
Enter your age in years.
Male Female Select your biological sex for a more accurate calculation.
Sedentary (little to no exercise) Lightly Active (light exercise/sports 1-3 days/week) Moderately Active (moderate exercise/sports 3-5 days/week) Very Active (hard exercise/sports 6-7 days/week) Extra Active (very hard exercise/sports & physical job) Choose the option that best describes your daily activity.

Your Cohen Diet Goal Weight Results

–.– kg
Target Weight Range: –.– – –.– kg
Estimated Daily Calories: — kcal
BMI at Goal Weight: –.–
Formula Used: The Cohen Diet aims for a goal weight that aligns with a healthy BMI range (typically 18.5-25). It often uses a personalized calorie deficit based on Basal Metabolic Rate (BMR) and activity level. This calculator estimates a goal weight within the healthy BMI range and the corresponding calorie intake.

Weight Loss Projection

Estimated weekly weight loss projection based on calorie deficit.
Healthy BMI Ranges and Associated Weights
Weight Category BMI Range Weight Range (for your height)
Underweight Below 18.5 — kg
Healthy Weight 18.5 – 24.9 — – — kg
Overweight 25.0 – 29.9 — – — kg
Obese 30.0 and above — kg and above

What is the Cohen Diet Goal Weight Calculator?

{primary_keyword} is a tool designed to help individuals understand their ideal or target weight based on the principles of the Cohen Diet. The Cohen Diet, developed by Dr. Remington Cohen, is a personalized low-calorie, low-fat, low-carbohydrate eating plan that dictates specific food groups and portion sizes based on an individual's metabolic rate, physical characteristics, and weight loss objectives. This calculator simplifies the process of identifying a healthy goal weight that aligns with the diet's philosophy and general health guidelines, often by referencing the Body Mass Index (BMI) healthy range.

This calculator is particularly useful for individuals who are considering or are already following the Cohen Diet, or anyone looking to establish a realistic and healthy weight target. It takes into account key personal metrics like current weight, height, age, sex, and activity level to provide a more personalized target weight estimation. It is important to note that while this tool provides a valuable estimate, it should not replace professional medical advice. Always consult with a healthcare provider or a registered dietitian before starting any new diet or weight loss program, including the Cohen Diet.

Common misconceptions about goal weight calculators, including those for the Cohen Diet, often revolve around the idea that they provide a single, universally perfect weight. In reality, a "goal weight" is a range, and individual health and body composition play significant roles. This {primary_keyword} calculator aims to provide a range and context, acknowledging that sustainable weight management is multifaceted and goes beyond just a number on the scale. It helps set a foundational target within a healthy BMI framework, which is a core aspect of many dietary approaches.

Cohen Diet Goal Weight Formula and Mathematical Explanation

The core principle behind determining a goal weight, especially in contexts like the Cohen Diet, is often rooted in achieving a Body Mass Index (BMI) within the healthy range, typically between 18.5 and 24.9. While the exact proprietary calculations of the Cohen Diet might involve more complex metabolic assessments done by practitioners, a general goal weight calculator uses established formulas to estimate this target.

The BMI formula is a fundamental component:

BMI = weight (kg) / [height (m)]^2

To find a goal weight that falls within the healthy BMI range, we can rearrange this formula:

Goal Weight (kg) = Desired BMI * [height (m)]^2

Since most users input height in centimeters (cm), we first convert height to meters (m) by dividing by 100. Let H_cm be height in cm, so H_m = H_cm / 100.

Goal Weight (kg) = Desired BMI * (H_cm / 100)^2

To provide a range, we use the lower and upper bounds of the healthy BMI: 18.5 and 24.9.

Lower Goal Weight (kg) = 18.5 * (H_cm / 100)^2

Upper Goal Weight (kg) = 24.9 * (H_cm / 100)^2

The calculator then identifies a primary goal weight, often near the midpoint of this healthy range or a weight deemed appropriate by the Cohen Diet's specific methodology. It also estimates daily calorie intake. This estimation typically involves calculating the Basal Metabolic Rate (BMR) using a formula like the Mifflin-St Jeor equation, and then applying an activity factor.

Mifflin-St Jeor Equation for BMR:

For Men: BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age in years) + 5

For Women: BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age in years) - 161

Then, Total Daily Energy Expenditure (TDEE) is estimated:

TDEE = BMR * Activity Factor

The Cohen Diet itself focuses on a very specific, often low, calorie intake (e.g., 1000-1500 kcal depending on individual assessment) to create a significant deficit. This calculator provides an *estimated* daily calorie intake to *maintain* the goal weight or a level that *supports* weight loss within the Cohen Diet's philosophy, though the diet's prescribed intake is usually lower for active weight loss.

Variables Table

Variable Meaning Unit Typical Range
Current Weight The user's present body mass. kg 30 – 250+
Height The user's vertical body measurement. cm 120 – 220
Age The user's age in years. Years 16 – 90+
Sex Biological sex, used for BMR calculation differences. Category Male, Female
Activity Level Measures daily physical exertion. Category Sedentary to Extra Active
BMI Body Mass Index, a measure of body fat based on height and weight. kg/m² 18.5 (healthy lower bound) to 24.9 (healthy upper bound)
BMR Basal Metabolic Rate, calories burned at rest. kcal/day 800 – 2500+
TDEE Total Daily Energy Expenditure. kcal/day 1200 – 4000+
Goal Weight Target weight within a healthy BMI range. kg Varies based on height and BMI range

Practical Examples (Real-World Use Cases)

Understanding how the {primary_keyword} calculator works in practice can be very helpful. Here are a couple of scenarios:

Example 1: Sarah, Aiming for a Healthier Weight

Sarah is a 35-year-old woman, 165 cm tall, currently weighing 80 kg. She considers herself moderately active, exercising 3-4 times a week. She wants to understand what a healthy weight range would look like for her and what her potential target weight could be according to the Cohen Diet principles.

  • Inputs: Current Weight: 80 kg, Height: 165 cm, Age: 35, Sex: Female, Activity Level: Moderately Active.
  • Calculation: The calculator determines her height in meters (1.65 m). It then calculates the healthy BMI range weights:
    • Lower Goal Weight (BMI 18.5): 18.5 * (1.65)^2 ≈ 50.4 kg
    • Upper Goal Weight (BMI 24.9): 24.9 * (1.65)^2 ≈ 67.9 kg
    A primary goal weight might be set around 60 kg, situated comfortably within the healthy range. Her estimated BMR and TDEE are calculated, and a potential calorie intake supporting weight loss within the Cohen Diet's framework is estimated (e.g., around 1200-1400 kcal, though a practitioner would provide the exact number).
  • Outputs:
    • Main Result (Goal Weight): ~60 kg
    • Target Weight Range: 50.4 – 67.9 kg
    • Estimated Daily Calories (for weight loss support): ~1300 kcal
    • BMI at Goal Weight: ~22.0
  • Interpretation: Sarah learns that a healthy weight for her height is between approximately 50.4 kg and 67.9 kg. A goal of around 60 kg is realistic and achievable, placing her well within the healthy BMI. The estimated calorie support level gives her an idea of the deficit needed, aligning with the low-calorie nature of the Cohen Diet. This helps her set a tangible target.

Example 2: Mark, Assessing His Current Weight Status

Mark is a 45-year-old male, 180 cm tall, weighing 105 kg. He has a sedentary job but tries to walk occasionally. He's curious about the Cohen Diet and wants to know his current BMI and a healthy weight target.

  • Inputs: Current Weight: 105 kg, Height: 180 cm, Age: 45, Sex: Male, Activity Level: Sedentary.
  • Calculation: Height in meters = 1.80 m.
    • Lower Goal Weight (BMI 18.5): 18.5 * (1.80)^2 ≈ 60.8 kg
    • Upper Goal Weight (BMI 24.9): 24.9 * (1.80)^2 ≈ 81.7 kg
    The calculator will also compute his current BMI (105 / (1.80)^2 ≈ 32.4, which is in the obese range) and then estimate a goal weight, perhaps around 75 kg, within the healthy range. His estimated calorie needs for maintenance or a deficit will be calculated.
  • Outputs:
    • Main Result (Goal Weight): ~75 kg
    • Target Weight Range: 60.8 – 81.7 kg
    • Estimated Daily Calories (for weight loss support): ~1500 kcal
    • BMI at Goal Weight: ~23.1
  • Interpretation: Mark sees that his current weight places him in the obese category. The calculator shows him that a healthy weight range for him is significantly lower, around 60.8 kg to 81.7 kg. Setting a goal weight of 75 kg provides a clear, intermediate target. The estimated calorie information reinforces the need for a substantial dietary change, characteristic of the Cohen Diet. This provides motivation and a clear direction for his weight loss journey.

How to Use This Cohen Diet Goal Weight Calculator

Using the {primary_keyword} calculator is straightforward and designed to provide quick, actionable insights into your weight management goals within the context of the Cohen Diet. Follow these simple steps:

  1. Enter Current Weight: Input your current weight in kilograms (kg) into the "Current Weight" field. Be as accurate as possible.
  2. Enter Height: Provide your height in centimeters (cm) in the "Height" field.
  3. Enter Age: Input your age in years into the "Age" field.
  4. Select Biological Sex: Choose "Male" or "Female" from the dropdown menu. This affects the basal metabolic rate calculation.
  5. Select Activity Level: Choose the option that best describes your typical daily physical activity from the "Activity Level" dropdown. This ranges from "Sedentary" to "Extra Active".
  6. Calculate: Click the "Calculate Goal Weight" button.

How to Read the Results:

  • Main Highlighted Result (Goal Weight): This is the primary target weight the calculator suggests, typically aiming for the middle of a healthy BMI range or aligning with Cohen Diet principles.
  • Target Weight Range: This shows the lower and upper limits of a healthy weight based on your height and the standard healthy BMI (18.5-24.9). Your goal weight should fall within this range.
  • Estimated Daily Calories: This provides an estimate of the daily calorie intake required to support weight loss in line with the Cohen Diet's low-calorie approach. Note that the actual Cohen Diet plan prescribes exact calorie counts based on a full assessment.
  • BMI at Goal Weight: This indicates what your BMI would be if you reached your calculated goal weight, confirming it falls within the healthy range.
  • Weight Loss Projection Chart: Visualizes potential progress, showing how you might progress towards your goal weight over time based on a typical calorie deficit.
  • Healthy BMI Ranges Table: This table provides context by showing the weight ranges associated with different BMI categories (underweight, healthy, overweight, obese) for your specific height.

Decision-Making Guidance:

Use the results to set realistic weight loss objectives. If your current weight is significantly above the healthy range, focus on aiming for the lower end of the target range first. The estimated calorie intake can guide your dietary planning. Remember, this calculator is a guide; for a personalized Cohen Diet plan, consult a qualified practitioner. Sustainable weight loss involves lifestyle changes beyond just calorie counting, including balanced nutrition and regular physical activity.

Key Factors That Affect Cohen Diet Goal Weight Results

While the {primary_keyword} calculator provides a valuable estimate, several real-world factors can influence your actual weight, progress, and the effectiveness of any diet, including the Cohen Diet. Understanding these is crucial for a holistic approach to weight management:

  1. Metabolic Rate Variations: Beyond basic BMR calculations, individual metabolic rates can differ due to genetics, hormonal balance (e.g., thyroid function), and even gut microbiome. This means two people with identical stats might experience weight loss differently. The actual Cohen Diet aims to tailor calorie intake based on these nuances.
  2. Body Composition (Muscle vs. Fat): BMI and weight alone don't distinguish between muscle mass and fat mass. A very muscular individual might have a high weight and BMI but be perfectly healthy. The Cohen Diet often emphasizes fat loss, so focusing solely on scale weight might be misleading.
  3. Hormonal Influences: Hormones like insulin, cortisol, leptin, and ghrelin play significant roles in appetite regulation, fat storage, and metabolism. Conditions like PCOS or hormonal imbalances can significantly impact weight loss efforts and may require specific medical management.
  4. Diet Adherence and Consistency: The most sophisticated calculation is useless if the diet isn't followed consistently. The strict nature of the Cohen Diet requires strong adherence. Occasional slip-ups can slow progress, while consistent effort yields results.
  5. Physical Activity Intensity and Type: While activity level is factored in, the *type* and *intensity* of exercise matter. Cardiovascular exercise burns calories, while strength training builds muscle, which boosts metabolism. A balanced routine is often more effective than solely focusing on one type.
  6. Sleep Quality and Stress Levels: Poor sleep and high stress can disrupt hormones that regulate appetite (ghrelin and leptin) and increase cortisol, which promotes fat storage, particularly around the abdomen. Managing stress and prioritizing sleep are vital components of successful weight loss.
  7. Medications and Health Conditions: Certain medications (e.g., antidepressants, steroids) can cause weight gain or hinder weight loss. Pre-existing health conditions (e.g., diabetes, heart disease) also necessitate careful consideration and often specific dietary modifications.
  8. Water Retention: Fluctuations in weight due to water retention (influenced by salt intake, hydration levels, menstrual cycles) can temporarily mask fat loss or make the scale seem less responsive, even if body composition is improving.

Frequently Asked Questions (FAQ)

Is the Cohen Diet suitable for everyone?

The Cohen Diet is a very low-calorie diet and may not be suitable for individuals with certain medical conditions, such as kidney disease, liver disease, eating disorders, or those who are pregnant or breastfeeding. It is essential to consult a healthcare professional before starting.

How is the Cohen Diet different from other low-calorie diets?

The Cohen Diet is highly personalized, with specific food group restrictions and portion sizes determined by a practitioner based on individual metabolic assessments. It's not a one-size-fits-all plan and often involves blood tests to fine-tune the recommendations for maximum fat loss while preserving muscle mass.

What is the typical calorie intake on the Cohen Diet?

The exact calorie prescription varies significantly based on individual assessments by a Cohen practitioner. However, it is generally considered a very low-calorie diet, often ranging from 1000 to 1500 kcal per day, with specific breakdowns of carbohydrates, proteins, and fats.

Can I use this calculator if I'm not following the Cohen Diet strictly?

Yes, this calculator can still be useful. It helps estimate a healthy weight range based on your stats and provides a general idea of calorie needs for weight management. However, for the specific nuances of the Cohen Diet, professional guidance is recommended.

Why does the calculator ask for biological sex?

Biological sex influences hormone levels and body composition, which affect Basal Metabolic Rate (BMR). Men generally have a higher BMR than women of the same weight, age, and height due to higher muscle mass. Including this factor improves the accuracy of calorie estimations.

How accurate is the goal weight estimation?

The goal weight estimation is based on standard healthy BMI ranges (18.5-24.9). It provides a scientifically recognized healthy weight bracket. However, individual body composition and health status mean that the ideal weight can vary. This tool offers a strong guideline, not a definitive prescription.

What should I do if my current weight is much higher than the calculated healthy range?

If your current weight is significantly above the healthy range, it indicates a need for substantial lifestyle changes. Consult with a healthcare provider or a registered dietitian to create a safe and effective weight loss plan. The Cohen Diet might be an option, but professional guidance is crucial for managing such a deficit.

Does the Cohen Diet include exercise recommendations?

While the core of the Cohen Diet focuses on precise dietary protocols for fat loss, exercise is often recommended as a complementary component to enhance results, improve overall health, and support metabolism. The intensity and type of exercise might be discussed with a practitioner.

Disclaimer: This calculator provides estimates for informational purposes only and does not constitute medical advice. Consult with a qualified healthcare professional for personalized guidance.

var currentWeightInput = document.getElementById("currentWeight"); var heightInput = document.getElementById("height"); var ageInput = document.getElementById("age"); var sexSelect = document.getElementById("sex"); var activityLevelSelect = document.getElementById("activityLevel"); var currentWeightError = document.getElementById("currentWeightError"); var heightError = document.getElementById("heightError"); var ageError = document.getElementById("ageError"); var sexError = document.getElementById("sexError"); var activityLevelError = document.getElementById("activityLevelError"); var mainResultDisplay = document.getElementById("mainResult"); var targetWeightRangeDisplay = document.getElementById("targetWeightRange"); var estimatedCaloriesDisplay = document.getElementById("estimatedCalories"); var goalBmiDisplay = document.getElementById("goalBmi"); var underweightRangeDisplay = document.getElementById("underweightRange"); var healthyWeightRangeDisplay = document.getElementById("healthyWeightRange"); var overweightRangeDisplay = document.getElementById("overweightRange"); var obeseRangeDisplay = document.getElementById("obeseRange"); var weightLossChart; var chartContext; function validateInput(inputElement, errorElement, min, max, fieldName) { var value = parseFloat(inputElement.value); var errorMessage = ""; if (isNaN(value) || value <= 0) { errorMessage = fieldName + " is required and must be a positive number."; inputElement.style.borderColor = "#dc3545"; } else if (min !== null && value max) { errorMessage = fieldName + " cannot be greater than " + max + "."; inputElement.style.borderColor = "#dc3545"; } else { inputElement.style.borderColor = "#ced4da"; // Default border color } errorElement.textContent = errorMessage; return errorMessage === ""; } function validateSelect(selectElement, errorElement, fieldName) { var value = selectElement.value; var errorMessage = ""; if (!value) { errorMessage = fieldName + " is required."; selectElement.style.borderColor = "#dc3545"; } else { selectElement.style.borderColor = "#ced4da"; // Default border color } errorElement.textContent = errorMessage; return errorMessage === ""; } function calculateCohenWeight() { var currentWeightValid = validateInput(currentWeightInput, currentWeightError, 0.1, 500, "Current Weight"); var heightValid = validateInput(heightInput, heightError, 50, 250, "Height"); var ageValid = validateInput(ageInput, ageError, 1, 120, "Age"); var sexValid = validateSelect(sexSelect, sexError, "Biological Sex"); var activityLevelValid = validateSelect(activityLevelSelect, activityLevelError, "Activity Level"); if (!currentWeightValid || !heightValid || !ageValid || !sexValid || !activityLevelValid) { resetResults(); return; } var currentWeight = parseFloat(currentWeightInput.value); var heightCm = parseFloat(heightInput.value); var age = parseInt(ageInput.value); var sex = sexSelect.value; var activityLevel = activityLevelSelect.value; var heightM = heightCm / 100; var heightM2 = Math.pow(heightM, 2); // Calculate Goal Weight based on healthy BMI range (18.5 – 24.9) var lowerGoalWeight = 18.5 * heightM2; var upperGoalWeight = 24.9 * heightM2; var midGoalWeight = (lowerGoalWeight + upperGoalWeight) / 2; // Estimate BMR using Mifflin-St Jeor var bmr; if (sex === "male") { bmr = (10 * currentWeight) + (6.25 * heightCm) – (5 * age) + 5; } else { // female bmr = (10 * currentWeight) + (6.25 * heightCm) – (5 * age) – 161; } // Activity Factors var activityFactor = 1.2; // Sedentary if (activityLevel === "light") activityFactor = 1.375; else if (activityLevel === "moderate") activityFactor = 1.55; else if (activityLevel === "veryActive") activityFactor = 1.725; else if (activityLevel === "extraActive") activityFactor = 1.9; var tdee = bmr * activityFactor; // Estimate calorie intake for weight loss (Cohen Diet is low calorie) // A typical deficit is 500-1000 kcal/day, but Cohen Diet can be more aggressive. // For calculator purposes, let's estimate a value that supports loss. // A common lower range for sustainable loss is around 1200 kcal. var estimatedCalories = Math.max(1000, tdee – 750); // Aim for at least 1000 kcal, or a 750 kcal deficit. // Ensure it's not drastically below BMR if TDEE is very low. if (estimatedCalories bmr) { estimatedCalories = bmr + 200; // Add a small buffer above BMR if TDEE is not much higher } else if (estimatedCalories 0 ? midGoalWeight / heightM2 : 0; // Update displays mainResultDisplay.textContent = midGoalWeight.toFixed(1) + " kg"; targetWeightRangeDisplay.textContent = lowerGoalWeight.toFixed(1) + " – " + upperGoalWeight.toFixed(1) + " kg"; estimatedCaloriesDisplay.textContent = estimatedCalories + " kcal"; goalBmiDisplay.textContent = goalBmi.toFixed(1); // Update BMI table underweightRangeDisplay.textContent = (18.4 * heightM2).toFixed(1) + " kg"; healthyWeightRangeDisplay.textContent = lowerGoalWeight.toFixed(1) + " – " + upperGoalWeight.toFixed(1) + " kg"; overweightRangeDisplay.textContent = (upperGoalWeight + 0.1).toFixed(1) + " – " + (29.9 * heightM2).toFixed(1) + " kg"; obeseRangeDisplay.textContent = (30.0 * heightM2).toFixed(1) + " kg and above"; updateChart(midGoalWeight, currentWeight, estimatedCalories, tdee); } function resetResults() { mainResultDisplay.textContent = "–.– kg"; targetWeightRangeDisplay.textContent = "–.– – –.– kg"; estimatedCaloriesDisplay.textContent = "– kcal"; goalBmiDisplay.textContent = "–.–"; underweightRangeDisplay.textContent = "– kg"; healthyWeightRangeDisplay.textContent = "– – — kg"; overweightRangeDisplay.textContent = "– – — kg"; obeseRangeDisplay.textContent = "– kg and above"; if (chartContext) { chartContext.clearRect(0, 0, chartContext.canvas.width, chartContext.canvas.height); } } function resetCalculator() { currentWeightInput.value = "75"; heightInput.value = "170"; ageInput.value = "30"; sexSelect.value = "male"; activityLevelSelect.value = "moderate"; currentWeightError.textContent = ""; heightError.textContent = ""; ageError.textContent = ""; sexError.textContent = ""; activityLevelError.textContent = ""; currentWeightInput.style.borderColor = "#ced4da"; heightInput.style.borderColor = "#ced4da"; ageInput.style.borderColor = "#ced4da"; sexSelect.style.borderColor = "#ced4da"; activityLevelSelect.style.borderColor = "#ced4da"; calculateCohenWeight(); } function updateChart(goalWeight, currentWeight, estimatedCalories, tdee) { var canvas = document.getElementById('weightLossChart'); if (!canvas) return; chartContext = canvas.getContext('2d'); chartContext.clearRect(0, 0, canvas.width, canvas.height); // Clear previous chart // Calculate calorie deficit var calorieDeficit = tdee – estimatedCalories; var weeklyCalorieDeficit = calorieDeficit * 7; var kgPerWeek = weeklyCalorieDeficit / 7700; // 7700 kcal per kg of fat var weeksToGoal = 0; if (kgPerWeek > 0.1) { // Only calculate if there's a meaningful deficit weeksToGoal = Math.abs(currentWeight – goalWeight) / kgPerWeek; } else { weeksToGoal = 0; // No progress if deficit is too small or negative } var maxWeeks = Math.max(10, Math.ceil(weeksToGoal) + 5); // Show at least 10 weeks, or enough to reach goal + buffer var dataPoints = 20; // Number of points on the chart var weekIncrement = maxWeeks / dataPoints; var labels = []; var currentWeightData = []; var goalWeightData = []; for (var i = 0; i <= dataPoints; i++) { var week = i * weekIncrement; labels.push(week.toFixed(1)); var projectedWeight = currentWeight – (kgPerWeek * week); if (projectedWeight < goalWeight) { projectedWeight = goalWeight; // Weight cannot go below goal } currentWeightData.push(projectedWeight); goalWeightData.push(goalWeight); } var chartConfig = { type: 'line', data: { labels: labels, datasets: [{ label: 'Projected Weight (kg)', data: currentWeightData, borderColor: 'var(–primary-color)', backgroundColor: 'rgba(0, 74, 153, 0.1)', fill: true, tension: 0.3, pointRadius: 2 }, { label: 'Goal Weight (kg)', data: goalWeightData, borderColor: 'var(–success-color)', borderDash: [5, 5], backgroundColor: 'rgba(40, 167, 69, 0.1)', fill: false, tension: 0, pointRadius: 0 }] }, options: { responsive: true, maintainAspectRatio: true, scales: { x: { title: { display: true, text: 'Weeks' }, grid: { display: false } }, y: { title: { display: true, text: 'Weight (kg)' }, beginAtZero: false } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Estimated Weight Loss Trajectory' } } } }; // Destroy previous chart instance if it exists if (window.weightLossChartInstance) { window.weightLossChartInstance.destroy(); } window.weightLossChartInstance = new Chart(chartContext, chartConfig); } function copyResults() { var mainResult = mainResultDisplay.textContent; var targetRange = targetWeightRangeDisplay.textContent; var estCalories = estimatedCaloriesDisplay.textContent; var goalBmi = goalBmiDisplay.textContent; var currentWeightVal = currentWeightInput.value; var heightVal = heightInput.value; var ageVal = ageInput.value; var sexVal = sexSelect.value; var activityVal = activityLevelSelect.options[activityLevelSelect.selectedIndex].text; var assumptions = `Assumptions:\n- Current Weight: ${currentWeightVal} kg\n- Height: ${heightVal} cm\n- Age: ${ageVal}\n- Sex: ${sexVal}\n- Activity Level: ${activityVal}`; var copyText = `— Cohen Diet Goal Weight Results —\n\nPrimary Goal Weight: ${mainResult}\nTarget Weight Range: ${targetRange}\nEstimated Daily Calories: ${estCalories}\nBMI at Goal Weight: ${goalBmi}\n\n${assumptions}`; navigator.clipboard.writeText(copyText).then(function() { // Success message or visual feedback could be added here alert("Results copied to clipboard!"); }).catch(function(err) { console.error('Failed to copy results: ', err); // Fallback for older browsers or specific environments var textArea = document.createElement("textarea"); textArea.value = copyText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'successful' : 'unsuccessful'; alert('Fallback: Copying text command was ' + msg); } catch (err) { alert('Fallback: Unable to copy text.'); } document.body.removeChild(textArea); }); } // Initialize chart canvas context document.addEventListener("DOMContentLoaded", function() { var canvas = document.getElementById('weightLossChart'); if (canvas) { chartContext = canvas.getContext('2d'); // Initial calculation and chart rendering on load resetCalculator(); // Sets default values and triggers calculation } // FAQ Toggle functionality var faqQuestions = document.querySelectorAll('.faq-question'); faqQuestions.forEach(function(question) { question.addEventListener('click', function() { this.classList.toggle('active'); var answer = this.nextElementSibling; if (answer.style.display === "block") { answer.style.display = "none"; } else { answer.style.display = "block"; } }); }); });

Leave a Comment