Green tea, or Camellia sinensis, has become a popular supplement marketed to help people lose weight as in the green tea diet. When harvested, green tea leaves receive the least amount of processing and fermenting, and consequently, more antioxidant properties are retained. Research indicates that green tea extracts may boost the body's metabolism as well as its fat-burning abilities. Green tea pills, like many other marketed weight loss and diet supplements, acts as a central nervous system stimulant, which, in turn, helps to decrease your appetite and enhances the goal of losing some pounds. The green tea diet, however, may produce some side effects.
Irritability and Insomnia
Frequently, the adverse effects of these diet pills are due to the amount of caffeine that green tea contains. According to the University of Michigan, green tea supplements can cause many of the same symptoms that result from consuming high levels of caffeine; for example, you might experience feelings of agitation, anxiety or restlessness. If you decide to try the Green Tea Diet, you may experience tremors or "the jitters" and have trouble sleeping. If you do experience such adverse reactions, stop taking the supplements and see your physician as soon as possible for evaluation.
Palpitations and Dizziness
In cases of increasing severity, the caffeine ingredient in the green tea pills may produce symptoms that appear to be cardiovascular in etiology; specifically, you may feel disturbing sensations of irregular heartbeats or palpitations, according to the University of Maryland Medical Center. Additionally, your heart palpitations may be accompanied by feelings of lightheadedness or dizziness. Individuals with a medical history of cardiovascular disease, high blood pressure, etc., who are considering this diet should consult with their physician to ensure that the green tea supplements will not exacerbate a medical condition or produce a medical complication.
Digestive Upset
The caffeine in the green tea diet supplements may produce mild and common gastrointestinal side effects. According to Drugs.com, the green tea diet pills may cause an upset stomach with nausea that may or may not be associated with vomiting. Also, along with the upset stomach, you may experience some diarrhea, or on the other hand, you may become constipated. Such symptoms may occur at the beginning of this diet and may subside as the body adjusts to the supplements. However, if these side effects persist or increase in severity, you need to consult with your doctor and follow medical recommendations. This is especially important if you are experiencing diarrhea, for this side effect can lead to dehydration.
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