How Much Coffee Is Too Much?

New study reveals that less than four cups of coffee a day has no effect on mortality rates.
1:40 | 08/15/13

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Transcript for How Much Coffee Is Too Much?
Next now we have news about your daily life. How many cups of coffee do you drink a day? The mayo clinic published a new study suggesting that number could affect your life. Abc's linzie janis with the headlines. Reporter: More than two-thirds of adults in america start their day with a cup of coffee. How many cups do you have a day? Three or four. One or two. Reporter: In fact, the average coffee drinker in america has around three cups a day. Tonight a new study says that may actually be the magic number. Above 28 cups per week there appears to be a significant signal associated with increased total mortality. Reporter: The headline is for men under 55 more than four cups a day meant a 56 percent increased risk of an early death. For women, 113 percent. Recent studies focused on the benefits of coffee, one suggesting that two cups a day can lower your risk of heart disease. This is the first to look at coffee's impact on overall life span. Many of us are drinking more coffee than we even realize. The study was based on a cup of COFFEE IN THE 1970s, ABOUT SIX Or 8 ounces. Today's sizes can be much larger. This is the equivalent of two cups of coffee. But there is good news for folks over 55. No matter how much coffee they drink, it has no impact on the length of their life. Still when it comes to coffee like so many other things in life, the lesson is everything in moderation. Linzie janis, abc news, new york.

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