Fasting for three days can regenerate your entire immune system because it triggers the body to start producing new white blood cells.
Even though fasting diets are considered by nutritionists unhealthy, scientists at the University of Southern California say starving the body kick-starts stem cells into producing new white blood cells which can fight off infection. Fasting “flips a regenerative switch” which prompts stem cells to create brand new white blood cells. This is particularly beneficial for people suffering from damaged immune systems, such as cancer patients on chemotherapy.
“When you starve, the system tries to save energy, and one of the things it can do to save energy is to recycle a lot of the immune cells that are not needed, especially those that may be damaged,” Dr Longo said.