Fasting is a research area that explores the effects of abstaining from food and drink for a certain period of time on the body and mind. Researchers study the physiological and psychological changes that occur during fasting, as well as its potential health benefits. Fasting has been shown to have various effects on metabolism, hormone levels, and gene expression, and has been associated with improvements in areas such as weight loss, insulin sensitivity, and longevity. Additionally, fasting is also being studied for its potential therapeutic effects on conditions such as obesity, diabetes, and cancer.