The amount of coffee that a person should consume on a daily basis can vary depending on several factors, including their body weight, age, and overall health.
In general, most health organizations recommend that adults consume no more than 400 milligrams of caffeine per day, which is equivalent to about four cups of coffee.
However, it's important to keep in mind that the effects of caffeine can vary from person to person, so it's always best to talk to your doctor or healthcare provider about the right amount of caffeine for you.
As someone who was born in a country (FYI, Vietnam) where coffee is one of the top exporting products then I would say 2 cups per day!
After moving to Canada 5 years ago, I have been trying to limit my caffeine intake to 1 cup per day and looking for healthier alternatives like matcha latte to stay refreshed.
I'm sensitive to caffeine from coffee so I only have a decaf to start the day and even with that I get a little buzz off. Sadly that's all my body can handle.