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Estimate daily calorie needs from age, size, and activity.

Uses the Mifflin-St Jeor equation for BMR, then multiplies by activity factor. Estimates only — not medical advice.

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Uses the Mifflin-St Jeor equation to estimate basal metabolic rate, then multiplies by an activity factor to give total daily energy expenditure.

Helpful for setting calorie targets for weight loss, maintenance, or gain. These are estimates only and not a substitute for professional advice.

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