The Various Effects of Excess Black Tea
Black tea comes in many different flavors, from the classic Earl Grey to delightful blends with some herbs, spices and fruits. However, excessively consuming black tea can increase the risk of its side effects and can also be harmful for pregnant women and people with other medical conditions, as noted by the National Institutes of Health online medical encyclopedia Medline Plus. Thus, it is highly recommended to consult your physician first about black tea consumption and overall caffeine intake.
Black Tea Contents
Due to the natural polyphenols and caffeine content, plain black tea has no fat and can provide an antioxidant energy boost. Polyphenols have antioxidant activity in the body, and previous researches suggest that antioxidants may help protect against various diseases. Black tea also helps mental alertness according to Medline Plus. Experts claimed that while drinking black tea in moderate amount is considered safe for healthy people, excessive consumption of the same can cause adverse effects on the other hand.
Effects of Black Tea
According to Medline Plus, black tea’s antioxidant property may protect both the heart and the blood vessels. Black tea may help reduce the risk of certain types of cancers and prevent Parkinson’s disease. In a report released by the researchers from Poland’s University of Warsaw in the “European Journal of Nutrition”, it was claimed that flavored black teas contain increased levels of catechins and flavonoids than other fruit teas and premium black teas. The researchers claimed that flavonoids may help lower blood sugar and add more antioxidants to one’s diet.
Black Tea’s Caffeine Content
Black tea’s caffeine content has a diuretic effect. Thus, it can increase urination. Caffeine may also promote thermogenesis or an increase in the body’s temperature that burns more calories, and may have an appetite suppressant effect perfect for weight loss according to Katherine Zeratsky, an expert dietician from Mayo Clinic. She noted that caffeine’s diuretic effect doesn’t result to permanent weight loss. If a person has a low appetite from age or an existing medical condition, its potential appetite suppressant effect from excess caffeine in black tea may make it harder to eat enough to obtain sufficient energy and nutrients.
Black Tea’s Adverse Effects
Drinking more than five cups of coffee a day may be considered as too much. The excess black tea could cause adverse effects from its caffeine content. Other than its diuretic effect, excessive caffeine’s side effects can include nervousness, irritability, sleep difficulties, confusion, palpitation, vomiting, diarrhea, headache, heartburn, dizziness, tremor, ringing in the ears, convulsions and sleep disruption. Drinking excessive black tea and other caffeinated beverages on a regular basis can lead to psychological dependence.