Daily Calorie Needs Explained
A calorie estimate can be a useful planning reference, but it is not a precise prescription. Your real energy needs can vary from a formula.
Calorie needs are estimates that change with age, body size, metabolism and activity. Learn how maintenance-calorie tools work and what their limits are.
Why calorie needs vary
Daily energy needs differ because age, height, weight, sex used by common equations, activity, body composition and health context all affect energy use.
What a maintenance estimate means
A maintenance estimate is an approximation of the energy intake that might keep body weight relatively stable over time. Short-term day-to-day changes do not prove the estimate is right or wrong.
When to use extra caution
Pregnancy, breastfeeding, adolescence, eating-disorder history, major illness and medications can make generic calorie calculators inappropriate. In those situations, individualized guidance is more useful.
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Sources
Medical information on Daily Vitality is for general education and is not a diagnosis or a substitute for care from a qualified health professional.