THE BENEFITS OF FASTING
- Niti Dhulla
- Jul 1, 2025
- 3 min read
Updated: Jul 12, 2025

UPVAS
Upvas, also known as water fasting, is an integral part of Jainism, and it is practiced by many Jains worldwide. Jain Upvas refers to a one-day fast where Jains abstain from eating any food or drinking any fluids other than water for a period of 24 hours.
During the 3-days Upvas, Jains refrain from consuming any food or drink, and they may also observe certain other restrictions, such as avoiding any physical contact, maintaining silence, and avoiding any form of entertainment or distraction. Some Jains may also perform religious rituals or meditate during the fasting period.

In a 24-hour water fast, the individual is only allowed to drink water and must abstain from all solid foods and other beverages such as tea, coffee, and juice. The fast starts from the last meal taken in the evening about 48 minutes before sunset, and it continues for the next 24 hours. After 24 hours, the fast can be broken on the next day morning, with a healthy meal that is gentle on the digestive system.
Such type of water fasting has been shown to have several potential health benefits. Here are some of the benefits of a 24-hour water fast supported by research:
Weight Loss
Water fasting can help in weight loss. A study published in the International Journal of Obesity and Related Metabolic Disorders found that obese individuals who underwent a 24-hour water fast lost a significant amount of weight.

Improved Insulin Sensitivity
Fasting on water for 24 hours can also help improve insulin sensitivity. A study published in the Journal of Clinical Endocrinology and Metabolism showed that a 24-hour water fast improved insulin sensitivity in healthy individuals.
Reduced Inflammation
Water fasting has been found to reduce inflammation in the body. A study published in the Journal of Alternative and Complementary Medicine found that a 24-hour water fast reduced inflammation markers in healthy individuals.
Boosts Autophagy
Fasting can boost autophagy, which is the process of cellular recycling that removes damaged cells and promotes cellular regeneration. A study published in the Journal of Molecular Biology found that water fasting for 24 hours increased autophagy in human cells.
Improved Cardiovascular Health
Water fasting can also help improve cardiovascular health. A study published in the Journal of Nutrition, Health, and Aging found that a 24-hour water fast improved cardiovascular health in healthy individuals.

It's important to note that while these studies suggest the potential benefits of water fasting, it is essential to consult with a healthcare professional before embarking on a fasting regimen, particularly if you have any underlying medical conditions, such as diabetes, pregnant or nursing women, and children, should not attempt a water fast without consulting a healthcare professional. Also, it's crucial to stay hydrated and break the fast with appropriate foods.
ATTHAM
Jain Upvas or water fasting, practised for 3 days at a stretch is termed as Attham. It is an integral part of Jainism, and it is practiced by many Jains worldwide. Jains abstain from eating any food or drinking any fluid except for water for a period of 72 hours.
While research on the benefits of 72-hour water fasting is limited, here are some potential benefits that have been reported:
Weight Loss
Water fasting can lead to significant weight loss. A study published in the International Journal of Obesity found that people who underwent a 72-hour water fast lost an average of 3.6 pounds of weight.
Improved Insulin Sensitivity
Fasting has been found to improve insulin sensitivity, which can reduce the risk of type 2 diabetes. A study published in the Journal of Clinical Investigation found that a 72-hour water fast improved insulin sensitivity in healthy individuals.

Cellular Repair
Fasting can activate autophagy, which is the process of cellular repair and regeneration. A study published in the Journal of Molecular Biology found that water fasting for 72 hours increased autophagy in human cells.
Reduced Inflammation
Fasting has been found to reduce inflammation in the body. A study published in the Journal of Nutritional Biochemistry found that a 72-hour water fast reduced inflammation markers in healthy individuals.
Improved Heart Health
Fasting can help improve cardiovascular health by reducing blood pressure and cholesterol levels. A study published in the Journal of Alternative and Complementary Medicine found that a 72-hour water fast improved cardiovascular health in healthy individuals.
Improved Immune Function
A study published in the journal Aging Cell in 2021 found that a 72-hour fast increased the production of immune cells in the body, potentially leading to improved immune function and reduced risk of disease.
Conclusion
It's important to note that while these benefits are supported by research, it's crucial to consult with a healthcare professional before attempting a 72-hour water fast, especially if you have any underlying medical conditions. It's crucial to break the fast with healthy foods that are gentle on the digestive system and to stay hydrated during and after the fast.




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