Edna Tea house

Though moderate intake is healthy for most people, drinking too much could lead to negative side effects, such as anxiety, headaches, digestive issues, and disrupted sleep patterns. Most people can drink 3-4 cups (710-950 ml) of tea daily without adverse effects, but some may experience side effects at lower doses.

Cimperman said drinking tea has been linked to lower risks of cancer and heart disease, improved weight loss, and a stronger immune system. Meanwhile, studies point to coffee as a potential way to head off not just Parkinson's but type 2 diabetes, liver disease, and heart problems, Cimperman says.