Green tea is among the healthiest and safest drinks. Green tea drinkers need still remember a few things. Many uncommon side effects exist. Most of these negative effects affect caffeine and tannin sensitive people.
Green tea has less caffeine than coffee. Caffeine may cause anxiety, sleeplessness, fast heart rate, digestive difficulties, and high blood pressure.
Polyphenols in green tea impede the body's absorption of non-heme iron (present in plant-based meals). Drinking green tea with meals, particularly iron-rich ones, may limit iron absorption.
Green tea may cause stomach pain, acid reflux, or irritation, particularly on an empty stomach. High caffeine levels and gastric acid might worsen this.
Green tea leaves from specific places may collect excessive fluoride levels. Fluoride overdose may cause dental or skeletal fluorosis, which discolors and weakens teeth and bones
Green tea may interact with drugs. It may impair beta-blocker, blood thinner, and antipsychotic absorption. Consult your doctor before drinking green tea frequently if you take prescriptions.