"While some might indeed fall ill and feel worse, for most the Mela gathering is good for their health," said the research entitled "Understanding the Pilgrim Experience".
The 55-day Kumbh Mela in Allahabad, which takes place every 12 years, began on Monday where authorities said eight million people jostled for space to take a dip in the sacred waters which are said to cleanse sins.
Smaller melas take place every year in the country.
Social scientists from four British and five universities in the country concluded that the shared group experience of enduring hardships and sharing the same activities outweighed any physical discomfort.
"The experience of being part of a tightly-knit group of Hindu pilgrims, and the sense of support one gets from one's fellow pilgrims, enhances one's sense of being part of the community more generally," it said.
The study, published in the scientific journal Plos One, involved two surveys in 2010 and 2011 involving 416 pilgrims and a sample of 127 people who had not attended a mela.