Benefits of Intermittent Fasting
What the research says about IF's impact on your health.
The science behind intermittent fasting spans more than just weight loss. Here's what research has consistently shown.
Weight and body composition
IF reduces calorie intake and optimizes fat-burning hormones. A 2020 review in the New England Journal of Medicine found IF produces similar or greater weight loss than continuous calorie restriction, with better preservation of muscle mass.
Metabolic health
Fasting improves insulin sensitivity, lowers blood sugar, reduces LDL cholesterol and triglycerides, and increases HDL cholesterol. These changes lower risk of type 2 diabetes and heart disease.
Brain health
Fasting increases brain-derived neurotrophic factor (BDNF), a protein that supports neuron growth and protects against neurodegenerative disease. Animal studies show fasting may protect against Alzheimer's and Parkinson's. Many practitioners report clearer thinking during fasting windows.
Inflammation reduction
Chronic low-grade inflammation drives most modern diseases. Studies show IF significantly reduces inflammatory markers including C-reactive protein and interleukin-6.
Longevity signals
Fasting activates AMPK (an energy-sensing enzyme) and inhibits mTOR (a growth pathway). This combination — mimicked by calorie restriction in long-lived animals — is associated with extended lifespan in multiple species.
Simplicity
Unlike calorie counting, IF has one rule: don't eat during the fasting window. This simplicity makes it sustainable long-term. Many practitioners find their relationship with food improves as constant snacking urges fade.