Dr. Hibberd's answer:
 

Alcohol does have health benefits when consumed in moderation. That means no more than two drinks daily for men — NOT several shots of vodka. For women, the recommendationis no more than a glass a day.
 

Red wine seems to be preferable. The benefits here include benefits from bioflavonoids (which give pigments to the skin of red grapes) in wine. Scientific studies have also found white wine is beneficial, but perhaps not as much as red wine.
 

Hard liquor use for vascular protection is not regarded as equivalent to red wine consumption. The use of hard liquor such as vodka may be beneficial to some, as long as the intake is less than two shots daily. In addition, many hard liquor users mix their shots with sugary soft drinks that add to blood glucose levels, which is bad for cardiovascular health.
 

Tell your husband his vodka use is excessive and help him moderate his use so he can live as long as his father did. Go to his physician with him and have a health assessment done to determine what other assistance he may need.