Coffee contains caffeine, a central nervous system stimulant that is known for its ability to fight fatigue and increase energy levels.
According to a study published in 2021 in the American Heart Association journal Circulation: Heart Failure, drinking one or more daily cups of plain, caffeinated coffee was associated with a significant reduction in long-term risk of heart failure.
According to some research, coffee could alter fat storage and support gut health, both of which may be beneficial for weight management.
Some research suggests that consuming coffee regularly could be associated with a decreased risk of developing type 2 diabetes over the long term.
A 2015 study appearing in the Journal of the National Cancer Institute found that those who drank four or more cups of caffeinated coffee each day had a 20% lower risk of developing melanoma than people who drank decaffeinated coffee or no coffee.
According to a 2012 study published in the Journal of Alzheimer's Disease, those whose blood levels contained caffeine amounts equivalent to about three cups of coffee were far less likely to have progressed to full-blown dementia than those who had consumed little or no caffeine.