Intermittent fasting cycles your body between periods of fasting and eating.
Rather than restricting the foods you eat, it controls when you eat them. Thus, it can be seen as more of an eating pattern than a diet.
Intermittent fasting is commonly used for weight loss because it leads to relatively easy calorie restriction.
It can make you eat fewer calories overall — as long as you don't overcompensate by eating much more during the eating periods.
Intermittent fasting is generally very successful for weight loss. It has been shown to cause weight loss of 3–8% over a period of 3–24 weeks, which is a lot compared to most weight loss diets
In addition to causing less muscle loss than standard calorie restriction, it may increase your metabolic rate by 3.6–14% in the short term
Intermittent fasting may reduce markers of inflammation, cholesterol levels, blood triglycerides, and blood sugar levels
Furthermore, intermittent fasting has been linked to increased levels of human growth hormone (HGH), improved insulin sensitivity, improved cellular repair, and altered gene expressions
Animal studies also suggest that it may help new brain cells grow, lengthen lifespan, and protect against Alzheimer's disease and cancer
Although intermittent fasting is safe for well-nourished and healthy people, it does not suit everyone.
Some studies note that it's not as beneficial for women as it is for men
In addition, some people should avoid fasting, including those sensitive to drops in blood sugar levels, pregnant women, breastfeeding moms, teenagers, children, and people who are malnourished, underweight, or nutrient deficient.