Various researches conducted for determining the effects of green tea or unsweetened teas and green tea on the human body indicate that it has numerous positive health benefits. Generally, it helps in reducing blood pressure and lower the LDL cholesterol in the body, which can be extremely harmful. 

However, consuming green tea once a day won’t suffice if you want to stay diabetes-free for the rest of your lives. According to the research, one can reduce their vulnerability to diabetes only if they consume as many as 6 cups of green tea every day. Then again, these studies could not come up with concrete evidence for the same. 

By suggesting green tea, we are not advising you to stick to it. You can also opt for multiple variants of herbal tea by directly infusing your favorite herbs into a boiling cup of water and letting it stay. For a refreshing taste, you can create a blend of herbs and store them dry. Or, you can use the fresh herbs from your garden to make tea. Chilling it if you like your beverages cold is another option you can opt for, along with adding some lemon juice in it for more taste. 

Moreover, you can find ready packaging of Earl Grey and jasmine tea in a nearby store. It depends on your caffeine requirements, whether you want to consume them or not.