Healthy adults should aim for 1.2-1.7g/kg/d protein intake. Pregnant/lactating women need 1.7g/kg/d protein intake. Protein requirements should be based on body weight, not calories
Calculator estimates daily calorie needs based on BMR calculations. BMR calculations use Harris-Benedict, Mifflin-St Jeor, or Katch-McArdle formulas. 1 pound equals approximately 3,500 calories
NIH recommends BMI between 25-27 for adults over 65. BMI is outdated and doesn't consider body composition or age. BMI above 30 is considered obese
BMR is calories burned solely for being alive. BMR varies based on age, sex, size and genetics. Men's BMR formula: (13.75 × weight) + (5 × height) - (6.76 × age) + 66. Women's BMR formula: (9.56 × weight) + (1.85 × height) - (4.68 × age) + 655
Average U.S. male over 20 weighs 199.8 pounds. Weight increases with age, reaching 200 pounds by 2000. After 70, average weight decreases to 193.4 pounds. Almost three out of four U.S. men are overweight or obese
Daily calorie needs depend on basal metabolic rate and activity level. Food converts into energy for basic functions and daily activities. Calorie needs vary based on goals and current weight