
The Effects of Insufficient Calorie Intake on the Body
What happens when calorie intake is too low for too long? Effects on metabolism, muscle, hormones and mood, and how to get enough energy safely.
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What happens when calorie intake is too low for too long? Effects on metabolism, muscle, hormones and mood, and how to get enough energy safely.

How is basal metabolic rate calculated? The Mifflin-St Jeor formula, examples for women and men, activity multipliers and reading your calorie need.

The harms of severe underweight can threaten health in a wide range from weakened immune system to osteoporosis.