One of the main concerns about green tea is its caffeine content.

Caffeine is a stimulant that can cause anxiety, insomnia, and other side effects in some people.

Green tea typically contains less caffeine than coffee, but it's still important to be aware of the potential impact on your health.

Another concern about green tea is its potential to interfere with the absorption of iron.

Iron is an essential mineral for transporting oxygen throughout your body.

If you have iron deficiency, drinking green tea may make the problem worse.

Green tea may also interact with certain medications, including blood thinners and antidepressants.

If you're taking any medications, it's important to talk to your doctor before drinking green tea.

Pregnant women and women who are breastfeeding should also avoid drinking green tea.