At 36:00 A penguin can fast more than 100 days without problem, a healthy man 40 days.
The Russians practice it to cure a bit of everything.
The most interesting is its action on cancer cells at 56:00
https://www.journaldemontreal.com/2022/ ... icancereuxA clinical study reports that severe calorie restriction cycles improve cancer immunity, a phenomenon often associated with a better prognosis.
Preclinical studies have shown that severe caloric restriction, achieved through cyclical episodes of fasting or using diets that mimic fasting (very low in carbohydrates and proteins), enhances the antitumor activity of chemotherapy, immunotherapy or endocrine therapies.(1)
These positive anti-cancer effects have been attributed to two major effects of fasting or fasting-mimicking diets:
1. a reduction in blood sugar, insulin and the growth factor IGF1, which reduces tumor growth and prevents the repair of damage inflicted on cancer cells by treatments and
2. an increase in antitumor immunity (infiltration of tumors by CD8+ T cells and decrease in immunosuppressive T cells).