Drink a lot of coffee? Blame it on your genes.

I read that people who drink a lot of coffee may do so because of their genes. Hmm. My father drinks a lot of coffee. My mother has always been a Coke drinker, but I'm sure it has a lot of caffine. I had grandmothers on both sides who drank a lot of coffee. I'm not certain about either of my bio grand-fathers who I never met. Read the article here: http://healthland.time.com/2011/04/08/cant-get-enough-coffee-it-might-be-in-your-genes/?hpt=T2