“It is We Who have sent down the Dhikr (The Quran) and surely, We will guard it (from corruption).” (15:9)
The 2016 Nobel Prize for Physiology or Medicine was awarded to Japan's Dr. Yoshinori Ohsumi for his discoveries of the underlying mechanisms of a physiological process called autophagy. Autophagy is a natural process by which the body degrades and recycles damaged cells, proteins and toxins. Autophagy comes from two Greek words, auto meaning "self" and phagy meaning "to eat." This is the body's way of cleaning house. It happens during starvation, calorie restriction, and fasting.
Fasting may have potential health benefits, including weight loss, improved insulin sensitivity, reduced inflammation, and potentially even longer lifespan. You can also confirm it by doing an independent research.
In the Quran, fasting is an obligation but also says that it has benefits.
O you who believe! Fasting is prescribed for you, as it was prescribed for those before you, that you may become righteous. For a specified number of days. But whoever among you is sick, or on a journey, then a number of other days. For those who are able: a ransom of feeding a needy person. But whoever volunteers goodness, it is better for him. But to fast is best for you, if you only knew.