Water fasting may help promote autophagy. That is a natural process of cellular renewal and repair. During autophagy, the body breaks down and recycles damaged cells and cellular components. That helps to grow new, healthy cells and tissues.
Anti-ageing properties of autophagy exist. It lessens cellular damage, inflammation, and oxidative stress. The generation of human growth hormone (HGH) is also stimulated by water fasting. That is involved in cellular regeneration and repair.