The calorie recommendation is based on the Harris Benedict formula which gives the user a BMR(Basal metabolic rate)(see calculation below). Based on the BMR, activity level and goal we recommend the user a daily calorie budget.
Base on the Katch-McArdle Formula: BMR = 370 + 21.6(1 - F)W
where:
W is body weight in kg
H is body height in cm
A is age
F is body fat in percentage
The recommended pace of gaining and losing weight depends on the individual energy requirements. For weight loss and weight gain, we recommend a slow and steady pace that works over a longer period of time with a maximum of 2 lbs or 1 kg per week.
Overly aggressive weight loss or weight gain goals are not advocated and therefore do not show regimens where daily calorie balances are too low or too high.
Source: https://www.ncbi.nlm.nih.gov/books/NBK2003/ (National Institute of Health - Clinical Guidelines on the Identification, Evaluation and Treatment of Overweight and Obesity in Adults)
All recommended data comes from Dietary Guidelines for Americans, 2020-2025
Macronutrient ratio: Carbohydrates 50%, Protein 20%, Fat 30%.
Two days of fasting per week
Source: https://www.nia.nih.gov/news/calorie-restriction-and-fasting-diets-what-do-we-know
The Nutrition Score is an evaluation of how healthy your diet is based on the following five factors.
Source of calorie
Calorie of meals
Richness of food
Limit foods
Vitamins and Minerals
Source: https://www.who.int/news-room/fact-sheets/detail/healthy-diet