The #1 Danger of Prolonged Fasting

Depending on the length of the fasting period, people may experience headaches, lethargy, crankiness, and constipation. To decrease some of these unwanted side effects, you may want to switch from adf fasting to periodic fasting or a time restricted eating plan that allows you to eat everyday within a certain time period.It’s human nature for people to want to reward themselves after doing very hard work, such as exercise or fasting for a long period of time, so there is a danger of indulging in unhealthy dietary habits on non-fasting days,” says Dr. Frank Hu, chair of the department of nutrition at the Harvard T.H. Chan School of Public Health. If you want to give intermittent fasting a try, make sure to discuss it with your doctor first, says Dr. Eric Rimm, professor of epidemiology and nutrition at the Harvard T.H. Chan School of Public Health. Skipping meals and severely limiting calories can be dangerous for people with certain conditions, such as diabetes. Some people who take medications for blood pressure or heart disease also may be more prone to imbalances of sodium, potassium, and other minerals during longer-than-normal periods of fasting.
https://www.health.harvard.edu/staying-healthy/4-intermittent-fasting-side-effects-to-watch-out-for