Studies Show Caffeine’s Dual Nature

Coffee Myths

Caffeine Dehydrates You
It may surprise you, but caffeinated liquids act as diuretics only if they contain more than 575 mg of caffeine. Below that number, caffeine doesn't negatively affect hydration.

Caffeine Increases Your Risk of Heart Disease
At least for regular coffee drinkers with no preexisting heart conditions, caffeine appears not to increase the risk of heart disease, heart attack, or arrhythmia.

Bone Loss?
Studies have shown only a small reduction in calcium absorption due to caffeine consumption. Doctors do sometimes advise those at risk for osteoporosis to avoid caffeine, but for many of us, drinking two tablespoons of milk per day can add back any calcium lost to caffeine.

Another Culprit?
Studies indicate possible links between bone loss and the consumption of sodas, which contain phosphoric and carbonic acids. Soda has been described as "osteoporosis in a can." Carbonation upsets the stomach, which then pulls calcium from blood cells; this in turn causes blood cells to pull calcium from the bones to keep a steady supply of the vital nutrient to the brain. Regardless of caffeine's connection to bone loss, drinking a lot of caffeinated soda is probably not a good idea, especially for women.

So whether coffee or tea, your favorite naturally caffeinated drink's contributions to your health may sometimes appear contradictory, but will rarely be all bad.

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