Coffee has a pH level of around 5.0 to 5.5, which falls on the acidic side of the scale. Black tea and green tea typically ...

The researchers put this down to the earlier mentioned amino acid, L-theanine ... in lower concentrations, in black tea. There’s less research on the effects of coffee on stress, but researchers ...

That's about four cups of coffee, eight cups of black tea, or approximately 13 cups of ... “Coffee is also acidic and needs to be avoided by many people who experience acid reflux and ...

Green tea offers a mild caffeine boost with antioxidants, promoting brain health and aiding weight loss, and contains less ...