… And Also Lessen Your Risk for Oral Cancer
An observational study by the American Cancer Society, published in January 2013 in the American Journal of Epidemiology, found a strong relationship between caffeinated coffee intake and oral cancer death risk. Of the 968,432 men and women studied who were cancer-free at enrollment, 868 died due to oral cancer during the 26-year study period. Researchers found those who drank more than four cups of caffeinated coffee per day had about half the risk of death from oral cancers as those who only occasionally drank a cup. No association was found for tea drinking.
Too Much Caffeine Can Make You Feel Frazzled
“Caffeine is a drug, and like any other drug, it can have harmful effects when ingested in high amounts,” Batayneh cautions. “At doses of more than 500 mg — about the amount in four cups of coffee — caffeine has been found to cause nervousness, irritability, insomnia, upset stomach, muscle tremors, and irregular heartbeat.”