The Neuroscience of Being Human
The Neuroscience of Religious Fasting
Ketone bodies, BDNF, self-denial as neuroplasticity trigger, from Ramadan to Lent to Ekadashi to Yom Kippur, why every major tradition uses deprivation to alter consciousness and strengthen the brain
868-word article with 8 Harvard references.
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Religious fasting is not starvation. It is a deliberate, time-limited, spiritually framed withdrawal from food that produces specific neurological effects. When the body transitions from glucose metabolism to fat metabolism during a fast, the liver produces ketone bodies, beta-hydroxybutyrate, acetoacetate and acetone, which cross the blood-brain barrier and serve as an alternative fuel for neurons. This metabolic shift triggers the release of brain-derived neurotrophic factor (BDNF), enhances autophagy, reduces neuroinflammation, and produces a state of heightened cognitive clarity that fasters across every tradition describe in remarkably similar terms. This article examines the neuroscience of fasting as practised in Islam, Christianity, Judaism, Hinduism, Buddhism and Sikhism.
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