Why Religious Fasting Could Be Good for Your Brain

By Andrea Useem

Ramadan is in its third week now, and the required dawn-to-dusk fasting often feels like a daily mini–marathon. By late afternoon, hunger and thirst have sucked me dry, leaving me sleepy, slow-minded, and sometimes short-tempered.

I know that the purpose of fasting is spiritual—God will reward us in the next life—but in this lifetime, fasting sometimes makes me an ineffective, irritable person. So I was excited to learn that Harvard psychiatrist John Ratey, MD, had spoken at a recent Renaissance Weekend event about how caloric restriction can improve brain function. Read More