Fasting means deliberately going without food, drink, or both. It can mean:
There are many kinds of fasting:
No, it isn't. You may lose weight, but it's mostly water and muscle, not fat. When you return to normal eating, the water weight you lost during fasting comes back. You may even gain extra weight.
Some people use alternate-day fasting as a way to lose weight. They eat nothing every other day. This only helps you lose weight if you can control your hunger on your "eating" days and don't overeat. That's because no matter when you eat or don't eat, you only lose weight when you eat fewer calories than your body needs.
There is much debate over the health benefits of long-term fasting (eating only broth, juice, or water for days at a time). There isn't enough evidence to support the health claims.
That type of fasting can actually be dangerous, especially for people who have other medical problems.
Current as ofMarch 28, 2018
Author: Healthwise StaffMedical Review: Kathleen Romito, MD - Family MedicineAnne C. Poinier, MD - Internal MedicineRhonda O'Brien, MS, RD, CDE - Certified Diabetes EducatorColleen O'Connor, PhD, RD - Registered Dietitian
Current as of: March 28, 2018
Kathleen Romito, MD - Family Medicine & Anne C. Poinier, MD - Internal Medicine & Rhonda O'Brien, MS, RD, CDE - Certified Diabetes Educator & Colleen O'Connor, PhD, RD - Registered Dietitian
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