Drinking three to five cups of coffee per day is generally considered safe for adults. However, people who are pregnant or trying to get pregnant should not consume more than 300 milligrams of caffeine per day as caffeine crosses the placenta and could pose a risk to the fetus.

Americans of all ages are drinking coffee. Almost half of adults aged 18 to 24 drink coffee daily, which is an increase of 14% since January of 2021; however, a whopping 70% of seniors drink coffee daily. Seniors had a higher percentage of coffee drinkers in their age group, as well as drinking 3 times as much coffee as the younger group.

Hu said that moderate coffee intake—about 2–5 cups a day—is linked to a lower likelihood of type 2 diabetes, heart disease, liver and endometrial cancers, Parkinson’s disease, and depression. It’s even possible that people who drink coffee can reduce their risk of early death.