[sunwooz]

A lot of people in India speak both English and Hindi, plus a host of other regional languages.

"even after taking into account other factors such as smoking, high blood pressure, diabetes and age"

Did they take into account that people who speak multiple languages are potentially more financially secure and thus would have a healthier/more nutritional diet/lifestyle?

[sremani]

In Hyderabad, people even with little education tend to converse in Telugu and Urdu/Hindi to a level a fluency. Ability to speak English is reflection of better social or economic status. You can still find a lot of people who speak two languages and who are not well off in HYD.

[sunwooz]

It just seems like a contentious area to test this on. America would be better considering many people are monolingual.