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How much caffeine is too much caffeine?

Is your caffeine addiction having negative affects on your body? / Danielle Apolinar (WGXA)

MACON, Ga. -- Is your caffeine addiction having negative affects on your body?

According to the Mayo Clinic, it is safe for most healthy adults to consume up to 400 mg of caffeine per day.

Research shows that more than 60 percent of Americans drink at least one cup of coffee per day, but many drink more than the "healthy amount."

According to the Food and Drug Administration, consuming more than 600 mg of caffeine--or four to sevens cups of coffee--per day is considered to be too much.

Research by the Mayo Clinic indicates that consuming more than 500 to 600 mg of caffeine per day may lead to insomnia, nervousness, restlessness, irritability, upset stomach, fast heartbeat and even muscle tremors.

Nutritionist Naomi McKensie says that four to six cups of coffee per day is too many. She said that, like any addiction, your body can build up a tolerance and you may find yourself needing more and more to get energy.

Meanwhile, caffeine withdrawal can include anxiety, irritability and drowsiness, McKensie said.

McKensie said that too much caffeine can also have an affect on the central nervous system, digestive and excretory system, circulatory and respiratory system and skeletal and muscular systems.

She also said that quitting caffeine cold turkey may not be the way to go because it could lead to withdrawal symptoms.

McKensie said that if you are wanting to cut down, the best way is to steadily decrease your intake to the healthy amount of one to two cups per day.


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