Drinking coffee more could be dangerous


 Negative Health Effects of Drinking Coffee


Overview

For some, coffee is an indispensable part of daily life--whether as a morning pick-me-up, an afternoon energy booster or simply a treat between meals. According to the National Coffee Association's 2010 survey of coffee-drinking trends, 56 percent of Americans indulge in a cup of joe on a daily basis. Despite its popularity, the effects of this beverage are not always positive: Coffee carries several potential health risks for occasional and devoted drinkers alike.

Cholesterol

Coffee, particularly when unfiltered, may increase serum and LDL cholesterol levels in some individuals. Unfiltered coffee contains two cholesterol-raising substances known as cafestol and kahweol, according to the Linus Pauling Institute at Oregon State University. Although paper filters remove both substances from brewed coffee, consumers of unfiltered varieties may experience up to a 23 mg/dl rise in total cholesterol and a 14 mg/dl rise in LDL cholesterol. If you have high cholesterol, consider limiting or avoiding unfiltered coffee and opting for filtered versions instead.

Blood Pressure

For consumers of caffeinated coffee, boosted energy may come at a cost: Caffeine can sharply raise blood pressure levels, even for individuals whose blood pressure is typically normal. Consuming fully caffeinated coffee can substantially increase your blood pressure, although some people are more sensitive to caffeine's effects than others. If you have high blood pressure, the Limit your coffee consumption to 24 oz. per day, and coffee before physical labor and vigorous exercise--both of which naturally raise blood pressure.

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