Why a hot cuppa is better for you than you think:

Sure, there is the addictive caffeine, and the tea stains, but imagine that caffeine megalomania of coffee toned down by the ingredients of L-theanine, a psychoactive and immunoactive ingredient. So when you see your workers or colleagues drinking tea, it is so that they are more efficient, focused, and mentally stable. I once worked with a high-strung man who claimed that all I did was sit around and drink tea. Well dude, if it wasn't for me drinking tea all day, making the molecular lab from scratch thanks to the good doctor, you wouldn't be working there to complain about everything.

Black tea and L-theanine.

Anti-proliferative effect of ascorbic acid

This is a fascinating paper. Of course, one should read it and see the methods and dosage.

Belin et. al