People often fast on festivals like Navaratri, Shivratri, and Karwa Chauth, EID.Drom a scientific standpoint, rather than just a Spiritual Benefits but also physical benefits.  As per a study, Occasional fasting may not only help people lose weight but also boost their metabolic activity, generate antioxidants, and reverse some effects of ageing.

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 Scientists at the Okinawa Institute of Science and Technology (OIST) and Kyoto University in Japan identified 30 previously-unreported substances whose quantity increases during fasting and indicate a variety of health benefits.

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Teruya said, "We have been researching ageing and metabolism for many years and decided to search for unknown health effects in human fasting," said Takayuki Teruya, first author of the paper published in the journal Scientific Reports."Contrary to the original expectation, it turned out that fasting-induced metabolic activation rather actively.”

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The results revealed 44 metabolites, including 30 that were previously unrecognised, that increased universally among subjects between 1.5- to 60-fold within just 58 hours of fasting.

Fasting also appeared to enhance the metabolism of purine and pyrimidine, chemical substances which play key roles in gene expression and protein synthesis.  The finding suggests fasting may reprogramme which proteins cells build at what time, thus altering their function. The change may promote homeostasis in cells, or serve to edit their gene expression in response to environmental influences.