Worst time to drink green tea

Though green tea offers many health benefits, it may come with some downsides.

Several compounds in green tea can bind to minerals in your body and block their absorption.

Particularly, tannins are compounds found in green tea that act as antinutrients and reduce iron absorption ().

Furthermore, research shows that the epigallocatechin-3-gallate (EGCG) in green tea can bind to minerals like iron, copper, and chromium, preventing their absorption in your body ().

Several studies have demonstrated that drinking this tea with meals can reduce iron absorption, which may lead to a deficiency over time (, , ).

Therefore, it’s best to drink green tea between meals if possible, especially if you are deficient in iron or other key minerals.

One cup (237 ml) of green tea contains about 35 mg of caffeine ().

While this is much less than the roughly 96 mg of caffeine provided by the same amount of coffee, it can still cause side effects in those w

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