Boosts energy levels
Coffee contains caffeine, a central nervous system stimulant that is known for its ability to fight fatigue and increase energy levels. This is because caffeine blocks the receptors of a neurotransmitter called adenosine, and this increases levels of other neurotransmitters in your brain that regulate your energy levels, including dopamine.
One small study found that consuming caffeine increased time to exhaustion during a cycling exercise by 12% and significantly reduced subjective levels of fatigue in participants. Another study had similar findings, reporting that consuming caffeine before and during a round of golf improved performance, increased subjective energy levels, and reduced feelings of fatigue.
May be linked to a lower risk of type 2 diabetes
Some research suggests that consuming coffee regularly could be associated with a decreased risk of developing type 2 diabetes over the long term. In fact, one review of 30 studies found that each cup of coffee people consumed per day was linked to a 6% lower risk of developing type 2 diabetes.
This is thought to be due to coffee’s ability to preserve the function of the beta cells in your pancreas, which are responsible for producing insulin to regulate blood sugar levels.
Plus, it’s rich in antioxidants and may affect insulin sensitivity, inflammation, and metabolism — all of which are involved in the development of type 2 diabetes.
Could support brain health
Although studies have turned up mixed results, some research suggests that coffee may help protect against certain neurodegenerative disorders, including Alzheimer’s disease and Parkinson’s disease. According to one review of 13 studies, people who regularly consumed caffeine had a significantly lower risk of developing Parkinson’s disease. What’s more, caffeine consumption also slowed the progression of Parkinson’s disease over time.
Another review of 11 observational studies in more than 29,000 people also found that the more coffee people consumed, the lower their risk of Alzheimer’s disease. Additionally, several studies have demonstrated that moderate coffee consumption could be associated with a lower risk of dementia and cognitive decline.
Some research suggests that drinking coffee could help protect against Alzheimer’s disease, Parkinson’s disease, and cognitive decline.
May promote weight management
According to some research, coffee could alter fat storage and support gut health, both of which may be beneficial for weight management. For example, one review of 12 studies concluded that higher coffee consumption could be associated with decreased body fat, especially in men.
In another study, increased coffee intake was linked to decreased body fat in women. Furthermore, one study found that people who drank one to two cups of coffee per day were 17% more likely to meet recommended physical activity levels, compared with those who drank less than one cup per day.
Higher levels of physical activity could help promote weight management.