The Health Implications of a 36-Hour Fast: What You Need to Know

November 30, 2025 - 04:25

A 36-hour fast, increasingly favored by those in the fitness community, poses considerable health risks, according to neurologist Dr. Sudhir Kumar. While proponents argue that extended fasting can enhance insulin sensitivity and promote metabolic health, the potential dangers cannot be overlooked.

Dr. Kumar emphasizes that such prolonged fasting can lead to significant electrolyte imbalances, which may result in symptoms ranging from fatigue and dizziness to more severe complications like cardiac issues. Individuals with pre-existing health conditions, including diabetes or heart disease, should exercise particular caution and consult with healthcare professionals before attempting such a fast.

Moreover, the impact on mental clarity and cognitive function during extended fasting periods can vary widely among individuals, raising concerns about safety, especially for those engaged in demanding tasks or activities. While the allure of rapid weight loss and metabolic benefits exists, the risks associated with a 36-hour fast suggest that it may not be suitable for everyone.