There may be some correlation but causality is unclear. India has a lot of vegetarians and also a high incidence of heart disease.
That might have something more to do with almost one in four people in India being a tobacco user[1]. CDC suggests that one in four CVD deaths (in the US) is caused by tobacco use[2].
[1]: https://globalactiontoendsmoking.org/research/tobacco-around...
[2]: https://www.cdc.gov/tobacco/about/cigarettes-and-cardiovascu...
That might have something more to do with almost one in four people in India being a tobacco user[1]. CDC suggests that one in four CVD deaths (in the US) is caused by tobacco use[2].
[1]: https://globalactiontoendsmoking.org/research/tobacco-around...
[2]: https://www.cdc.gov/tobacco/about/cigarettes-and-cardiovascu...