In the book, Warren provides readers with a 21-day kosher plan to reboot and reprogram their bodies while retraining their minds.

While fasting on Yom Kippur addresses spiritual cleansing, scads of weight loss books are popularizing the diet fad of intermittent fasting.

These special-health diet books, all released in 2016, look critically at the gluten obsession and explain the mind-body connection—including what to eat to keep your memory sharp.