Risk for Alcoholism Linked to Risk for Obesity

Now what could it possibly be that looking like this would make a person want to impair their vision?

The researchers noted that the association between a family history of alcoholism and obesity risk has become more pronounced in recent years. Both men and women with such a family history were more likely to be obese in 2002 than members of that same high-risk group had been in 1992.

I wonder.

BTW, chicken or egg?