Green tea is extremely healthy. It is best to drink with green tea but start off small and go big as I can't even taste it without light sugar and milk but at least I'm trying.
Disadvantage and Advantages:
Advantages
1. Helps with cancer prevention
2. Reduces the risk of stroke.
3. Lower risk for developing type 2 diabetes.
4. Enhances remembrance
Disadvantages
1. Causes Insomnia
2. Anxiety
3. Cause irritability
4. Nausea
5.Upset stomach
Please note a lot of the benefits are found in people who drink green tea often but not too much so you have to find a middle ground. The disadvantages are mainly for people who have coffee sensitivity but feel free to do your own research :3