Studies and researches have proven the fact that coffee does have certain health benefits. Several studies have shown that drinking coffee drastically reduces diabetes risk, as it contains certain antioxidants and minerals which help in maintaining a lower blood sugar. Coffee has also been found to have anti-cancer properties. It is believed that coffee drinkers were 25% less likely to get colon cancer and 50% less likely to get liver cancer than non-drinkers. It also helps in fighting against the ill-effects of smoking and heavy alcohol consumption. It is also quite beneficial to asthma patients as it widens the bronchial tubes. Thanks to its high caffeine content, regular consumption of coffee reduces the risk of Parkinson’s disease. Due to the presence of a compound called trigonelline, coffee prevents dental cavities as it has antibacterial properties. Coffee drinkers also enjoy a reduced risk of gallstones and kidney stones.
But when it comes to cholesterol levels and blood pressure, coffee means trouble. It does raise cholesterol levels, which might lead to artery clogging, but as long as one sticks to filter coffee, one is quite safe. Coffee is believed to raise blood pressure as it increases the level of certain stress hormones, which are responsible for the rise in blood pressure. Coffee might also pose as a threat to people suffering from heart diseases, even though it contains certain anti-oxidants which are beneficial to the heart. Clearly, coffee isn’t meant for everyone. Along with the heart patients, pregnant women might also want to steer clear of coffee as it might increase the risk of miscarriage. Migraine patients and those at risk from osteoporosis are also included in the list.
Less is more is definitely the case with coffee, since the more one drinks coffee, the less one benefits. It was found that coffee was beneficial when restricted to 1-3 cups per day. One might even stretch it to six. But more than 6 cups per day was definitely not that beneficial after all.

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Via: WebMD