Happiness is not having others try to tell you what makes you happy based off of some study.
I hold the same philosophy with regard to cigarettes. I'll decide for myself what's carcinogenic, thank you very much.
With that said, I support your right to decide for yourself what is an acceptable level of risk for you and to enjoy them if you please. I choose to refrain, but that is my choice and you have every right to make a different one.