Fasting is indeed good for health.During my childhood days, the Ayurveda Doctors used to advise patients to observe fast when they had fever or other ailments. The concept of fasting when sick gradually decreased with the emergence of Allopathy and many doctors of Allopathy ruled out fasting during the fever. They started using antibiotics.
This year, the Nobel Prize for medicine was awarded to a Japanese Scientist who discovered " Autophagy". Autophagy is nothing but recycling of the cells. If we don't take food for a day, the body will use some inner cells and proteins unused in the body and survive. If the body loses this autophagy it will become sick.This autophagy will remove all unwanted cells, unused proteins and fat. This gives good health to the body. For proving the importance of fasting the Scientists got Nobel Prize. But nobody understood the importance when the same concept was advised by our elders and traditional physicians.
Now the same Allopathy doctors may advise us fasting when we are sick.