New study finds as little as one drink a day could shorten your life expectancy

ABC's Chief Medical Correspondent Dr. Jennifer Ashton discusses the new study about alcohol.
2:20 | 04/15/18

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Transcript for New study finds as little as one drink a day could shorten your life expectancy
They did we get them out a new study is raising more questions about the safety of consuming alcohol if found at a militant wondering today. Shorten your life expectancy injured in his talk about that is ABC's chief medical correspondent doctor John -- were all shaking our heads here we're gonna boycott the study found fame tell us about this so it represents ongoing research Karen this is a compilation of a lot of other studies in fact 83 other studies crossing nineteen countries about 600000 drinkers followed over decades and it first we have to do some math. They are saying that one minute serving are a hundred grams per week is the equivalent of seven servings which as you said is about one serving a day. This study found that if you have seven to fourteen servings a week it shortened the lifespan of a forty year old by six months. If you go to fourteen to about 24 servings a week. It shortened the lifespan by one to two years and if you're over 24 servings a week. That's cutting four to five years off your life out now. There's questionable methodology with this. But it wrapped presents again this question of where are we and that spectrum of how much drinking is beneficial how much is dangerous and where we can strike a healthy balance and in aside from those rather dismal find your saying that that says there are other findings but the damage of the drink great and this is what I really want people to know for sure we know there's a clear and significant association between alcohol and an increased risk of certain types of cancers oral head and neck cancers breast cancer esophageal cancer liver cancer. Its so called empty calories and also not good for our waistline as well as the brain if you talk about drinking in excess of amounts. But if you look at these servings you guys missing the important thing. This is what is serving a wine is supposed to be five ounces so if you're a restaurant or even serving yourself this home break you could be actually getting to. For what you think is only one and Wendell when you look at the medical literature we've all heard. Moderate alcohol consumption is good for retail what a real about the art what about all the study that much that is killing that's still conclusive so again we say. People who don't drink at all people who drink excessively higher risk of death. If you stay in that moderate range. Should you. Lesser water into wine Raphael are going to be unhappy with I now have but I eager not to really appreciate.

This transcript has been automatically generated and may not be 100% accurate.

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