MEAL PLAN GENERATION AND CALORIES RECOMMENDATION

 

1. Basal Metabolic Rate (BMR) Formula

Formula used:
Mifflin–St Jeor Equation (most accepted for modern populations)

Reference Source:
Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO.
A new predictive equation for resting energy expenditure in healthy individuals.
American Journal of Clinical Nutrition. 1990;51(2):241–247.
https://doi.org/10.1093/ajcn/51.2.241

This formula is officially recommended by the Academy of Nutrition and Dietetics and used widely in clinical nutrition apps.
It is the most widely accepted equation for calculating BMR (resting energy expenditure) in adults.

2. Total Daily Energy Expenditure (TDEE)

Formula used:
TDEE = BMR × Activity Factor

Reference Source:
McArdle WD, Katch FI, Katch VL. Exercise Physiology: Nutrition, Energy, and Human Performance. 8th Edition. Wolters Kluwer Health, 2015.
FAO/WHO/UNU Expert Consultation. Human Energy Requirements: Report of a Joint FAO/WHO/UNU Expert Consultation.
FAO Technical Report Series 1. Rome: Food and Agriculture Organization of the United Nations, 2001.
https://www.fao.org/3/y5686e/y5686e.pdf

Notes:
Activity multipliers (e.g., sedentary 1.2, moderate 1.55, active 1.725) are based on this and other exercise physiology standards used in U.S. dietary studies.

3. Body Mass Index (BMI)

Source:
National Heart, Lung, and Blood Institute (NHLBI). (2022).
Calculate Your Body Mass Index. U.S. Department of Health & Human Services.
https://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm

Formula:
BMI = Weight (kg) / [Height (m)]²

4. Total Daily Calorie Intake / Dietary Guidelines

Reference Source:
U.S. Department of Health and Human Services and U.S. Department of Agriculture.
Dietary Guidelines for Americans, 2020–2025 (9th Edition).
https://www.dietaryguidelines.gov

Notes:
Provides average calorie needs by age, sex, and activity level for the U.S. population.

1. U.S. Department of Health and Human Services (HHS) & USDA

Primary Source:
U.S. Department of Health and Human Services and U.S. Department of Agriculture. (2020).
Dietary Guidelines for Americans, 2020–2025 (9th ed.). Washington, DC.
https://odphp.health.gov/our-work/nutrition-physical-activity/dietary-guidelines

Key Guidance (Chapter 1 – Energy Balance):
Adults who need to lose weight should create a calorie deficit by consuming fewer calories than they expend (based on TDEE).
A safe, sustainable deficit: 500–750 kcal/day, leading to 0.5–1.0 kg (1–2 lb) per 2 weeks.
Focus on nutrient-dense foods and physical activity rather than extreme restriction.

2. National Institutes of Health (NIH) — National Heart, Lung, and Blood Institute (NHLBI)

Source:
Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults.
NIH Publication No. 98-4083 (1998, reissued 2013).

Key Guidance:
Recommends calorie reduction of 500–1,000 kcal/day to achieve 1–2 lb/week weight loss.
BMI categories:
18.5–24.9 = Normal
25–29.9 = Overweight
≥30 = Obese
Waist circumference thresholds:

40 inches (men)
35 inches (women) → Increased cardiometabolic risk

3. Centers for Disease Control and Prevention (CDC)

Source:
Centers for Disease Control and Prevention. (2023).
Healthy Weight, Nutrition, and Physical Activity.
https://www.cdc.gov/healthyweight/index.html

Key Guidance:
Suggests gradual weight loss through caloric deficit and regular activity.
Emphasizes a balanced calorie goal based on BMI, waist circumference, and health status.
Recommends combining dietary modification with ≥150 minutes/week of moderate activity.

Based on Guidelines From:

WHO (World Health Organization)
IDF (International Diabetes Federation)
ICMR (Indian Council of Medical Research – Asian/Indian cut-offs)
NIN (National Institute of Nutrition)
AND (Academy of Nutrition and Dietetics, USA)

FOR WOMEN

Do not go below 1270 kcal/day

Waist Circumference | Suggested Calorie Intake
< 80 cm (healthy) | TDEE (Maintain)
80–88 cm | Reduce 100 kcal
88–100 cm (high risk) | Reduce 200 kcal

100 cm (with diabetes/PCOS) | Reduce 300 kcal

FOR MEN

Do not go below 1570 kcal/day

Waist Circumference | Suggested Calorie Intake
< 88–90 cm | TDEE
90–100 cm | Reduce 100 kcal

100 cm (risk) | Reduce 200 kcal
108 cm (high risk) | Reduce 300 kcal

Calories Adjustment as per Vitals Variability

Vitals | Suggested Intake
High BP, blood sugar, high fat | Reduce 100 kcal from TDEE
Low BMI | Calorie surplus diet
Moderate Vitals | TDEE (Maintained)

Special Consideration

If total calories after TDEE is below 1400 kcal (women) or 1700 kcal (men), the calorie restriction for vitals should be reduced by 50 kcal only.

BMI and Waist Considerations for Ideal Calories

BMI | Risk Level | Suggested Calorie Restriction | Notes
< 18.5 | Malnourished | Maintain or +200 kcal | Focus on healthy weight gain
18.5–24.9 | Healthy | TDEE | Maintain weight
24.9–29.9 | Overweight | Reduce 200 kcal/day | Weight loss needed
29.9–34.9 | Obese | Reduce 300 kcal/day | Needs calorie restriction and activity
≥ 35 | High risk obesity | Reduce 500 kcal/day | May need medical/dietitian help

Case Study

Factor | Details
Age | 54 years
Weight | 63 kg
Height | 152 cm (5 ft)
Activity Level | Slightly Active (household work)
BMR | 1152 kcal/day
TDEE | 1584 kcal/day
Name | Deepali Verma (SME – Nutrition)

Goal: Maintain Weight (~1580 kcal/day)
Waist: 35.5 in / 91 cm
Calorie Adjustment:
TDEE 1584 (maintenance) – 200 kcal (waist/BMI) = 1380 kcal/day

Additional Note:
Blood sugar: 130 (fasting) → Prediabetic → Reduce further 50 kcal

Final Recommendation:
1330 kcal/day ≈ 1300 kcal/day (for meal plan)

3 Steps to Analyse the Goal

1. Maintain

2. Weight Reduction

3. Weight Increase

3 Steps to Calculate Goal / Ideal Calories

1. TDEE

2. Waist Analysis

3. Vital Analysis

Total Calories = Ideal Meal Plan Calories