There are around 300 million vegetarians in India. That is close to the population of the United States. Whatever health problems you think they may suffer from it isn't the ability to procreate.

I gave up meat 6 years ago. All of my non subtle clinically diagnosed health problems went away.

I did it because I couldn't think of killing animals anymore and the wonderful side effects of obesity, high blood sugar, and high blood pressure all went away.

I'm never touching meat again.