Drinking too much coffee may cause anxiety, restlessness, migraines, and poor sleep. However, no evidence indicates that drinking it on an empty stomach affects the frequency or strength of these side effects.
Interesting article about what researchers are learning about the effects of coffee. I drink my coffee first thing in the morning on an empty stomach, and that's all I drink, I'm not the kind of person that drinks coffee all day. I try to do everything in moderation, coffee included, I look forward to my morning coffee, but once a day is enough for me.
Read the full story here.....
https://www.healthline.com/nutrition/coffee-on-empty-stomach