Calories In Calories Out (CICO)

Law of thermodynamics, if you consume more energy than you 'burn' then your weight will increase and visa versa.

Measured by BMI, BMR and weight.

Calorific deficit: less in, more out;

Calorific excess: more in, less out;

Also see body composition, eating patterns, fasting.

References

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Created: 2026-06-15

Last Updated: 2026-06-15