FastNow
Glossary

Calorie Deficit

A calorie deficit occurs when you consume fewer calories than your body needs to maintain its current weight, often used for weight loss.

A calorie deficit is the condition required for fat loss over time. It means your body needs to use stored energy to make up the difference. The size of the deficit affects how fast progress happens. Consistency matters more than creating extreme deficits that are hard to maintain.

Related glossary terms