There's also some evidence linking coffee itself to weight loss and weight control. One study, published in the International Journal of Epidemiology in 2015, studied the dietary habits of more than 93,000 people to look for patterns between coffee consumption and weight. The study authors observed that people who drank more coffee had a lower risk of obesity, as well as a lower risk of type 2 diabetes. A study with laboratory animals, published in Nutrition & Diabetes in 2014, found that mice that consumed coffee and were fed a high-fat diet gained weight more slowly than the mice that didn't drink coffee.
Increasing age leads to decreased cognitive skills and increased risk of Dementia, Parkinson’s and Alzheimer’s disease. Having black coffee in the morning enhances the brain function. Black coffee helps the brain to stay active and thus helps in boosting the memory power. It also keeps the nerves active which in turn keeps dementia at bay. Studies say regular consumption of black coffee reduces risk of Alzheimer’s by 65 per cent and Parkinson’s by 60 per cent.
Many studies have proven that drinking caffeine during pregnancy might affect the growing fetus. Black coffee, being a rich source of caffeine, can increase the metabolic activity and heart rate. The growing fetus does not have enough strength to withstand this increase in heart rate. Black coffee and other caffeine drinks must be avoided during early pregnancy.
There's also some evidence linking coffee itself to weight loss and weight control. One study, published in the International Journal of Epidemiology in 2015, studied the dietary habits of more than 93,000 people to look for patterns between coffee consumption and weight. The study authors observed that people who drank more coffee had a lower risk of obesity, as well as a lower risk of type 2 diabetes. A study with laboratory animals, published in Nutrition & Diabetes in 2014, found that mice that consumed coffee and were fed a high-fat diet gained weight more slowly than the mice that didn't drink coffee.

Some health benefits of coffee come from the beverage's caffeine content and not necessarily from the coffee itself. For example, the review of studies published in Australian & New Zealand Journal of Psychiatry determined there was also a nonlinear association between caffeine and a lower risk of depression, in addition to the link with coffee itself. Caffeine, a stimulant, also has a beneficial effect on athletic performance, with research published in 2016 in the Journal of Sports Science determining that dosing with caffeine prior to physical activity increased "vigor" and decreased fatigue. To use this to your benefit before working out, drink a cup of black coffee about 30 to 45 minutes before you begin exercising.
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