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Negative Effects of Green Tea

Green tea may be a health drink and you should really drink it more often. However, keep the daily intake limited as more green tea may cause some side-effects. Know more about these negative effects and the recommended daily intake.

Exercise & Fitness By Meenakshi Chaudhary / Oct 11, 2014

Green Tea

Green tea is a healthy drink that has been used in Chinese traditional medicine for healing everything from cold to headaches. There, however, are some negative effects of the drink that you should be aware of. Knowing about them will help you optimize your green tea benefits. Image Courtesy: Getty


Caffeine Jitters

Green is a healthy drink but it still is a "tea" which means that it contains significant amount of caffeine. You should enjoy your tea, however, don't drink too much of it as an excessive caffeine intake may lead to some side-effects such as anxiety and nervousness. It can also affect your overall health and pose higher risk of complications.

Image Courtesy: Getty

Pregnant or Lactating Women

Increased consumption of green tea during pregnancy may pose higher risk of miscarriage and other side-effects. Caffeine in green tea may pass into breast milk from lactating mothers and affect the infant. Either avoid drinking green tea during such phases or cut down your intake to only a couple of cupfuls a day. Image Courtesy: Getty

Iron Issues

Green tea affects the bioavailability of nonheme iron which is the primary type of iron in eggs, dairy and several plant foods. Drinking more green tea may affect the absorption rate of iron into the body. You can drink a couple of cups of green tea without any risk of poor iron absorption rate; moreover, you can add a pinch of lemon juice in your green tea to improve iron absorption. Image Courtesy: Getty


Green tea has direct effect on the calcium deposited in your body. Drinking too much of green tea may remove more calcium from the body through the urine leading to calcium deficiency. It is best to limit your green tea intake to two cupfuls a day. Image Courtesy: Getty

Medical Interactions

Green tea may cause problems if you're taking medication such as stimulants, hormones, antibiotics, blood thinners or any drug that poses a risk of liver damage. Green tea can also worsen certain conditions such as diarrhea, glaucoma and bleeding disorders. Avoid green tea while you are on medications or experiencing such medical conditions. Image Courtesy: Getty

Empty Stomach

People often seek some relief in green tea when their stomach is empty, especially when they are fasting, however, it may do more harm than good. Drinking green tea on an empty stomach may cause toxicity. Research on animals has confirmed such side-effects on empty stomach. Image Courtesy: Getty

Sweetener Warning

If you have a habit of adding sugar to your green tea, you may be compromising the benefits. Adding sugar may not only increase the calories in every cup, but it will also make it like any other sweetened drink. Image Courtesy: Getty


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