Safety of alternate day fasting and effect on disordered eating behaviors.

Background: Alternate day fasting (ADF; ad libitum intake "feed day" alternated with 75% restriction "fast day"), is effective for weight loss, but the safety of the diet has been questioned. Accordingly, this study examined occurrences of adverse events and eating disorder symptoms during ADF.

Findings: Obese subjects (n = 59) participated in an 8-week ADF protocol where food was provided on the fast day.

Intermittent fasting vs daily calorie restriction for type 2 diabetes prevention: a review of human findings.

Intermittent fasting (IF) regimens have gained considerable popularity in recent years, as some people find these diets easier to follow than traditional calorie restriction (CR) approaches. IF involves restricting energy intake on 1-3 d/wk, and eating freely on the nonrestriction days. Alternate day fasting (ADF) is a subclass of IF, which consists of a "fast day" (75% energy restriction) alternating with a "feed day" (ad libitum food consumption).