link:Think Different: Why Mahatma Gandhi's Nutrition Habits Matter Today | Outlook Poshan (outlookindia.com)

"..FASTING FOR HEALTH

Gandhiji had fasted on 17 occasions during the freedom struggle, the longest being 21 days, surviving only on water and a little lime juice. But fasting was his way of healthcare, too. Long a part of ayurvedic therapy, it was part of his “nature cure” approach to healing the body..."