The evidence supports intermittent fasting as an effective strategy for weight loss and improving metabolic health markers, particularly in overweight and obese populations. While the studies are robust, individual responses may vary, and long-term adherence can be a challenge.
Body weight reductionAdults with overweight or obesity · Systematic reviewHigh
Intermittent fasting strategies, particularly alternate day fasting, showed a significant reduction in body weight compared to ad-libitum diets.
Metabolic healthGeneral adult population · Umbrella reviewHigh
Intermittent fasting improved metabolic health markers compared to ad-libitum diets.
Cardiometabolic risk factorsGeneral adult population · Systematic reviewHigh
Intermittent fasting diets showed similar benefits to continuous energy restriction for weight loss & cardiometabolic risk factors.
Weight lossOverweight and obese adults · Systematic review and meta-analysisHigh
Intermittent fasting was effective for weight loss in overweight & obese patients, with alternate day fasting showing the most benefit.
Glycemic controlAdults with diabetes · RCTModerate
A 5:2 intermittent fasting meal replacement diet improved glycemic control & reduced body weight.
Metabolic Health & Weight Management
Metformin & intermittent fasting are combined to support metabolic health & weight management. Metformin improves insulin sensitivity & glucose metabolism, while intermittent fasting aids in weight management & metabolic regulation.
Forms & usage▾
Common methods include the 16:8 or 5:2 fasting schedules, with no specific supplements required.