Coffee is one of the drinks preferred by many people. Although considered healthy because it can improve mood and metabolism, there are some side effects of coffee that can harm health, so we need to be aware. Coffee that is drunk in moderate amounts generally does not cause side effects, even giving good effects to the body. A person can experience coffee side effects, usually due to consuming high or excessive doses of caffeine. Understanding Coffee Side Effects Many studies were conducted on the benefits of coffee. One of the findings of the study is that coffee can increase life expectancy. In addition, the benefits of coffee are known to reduce the risk of cardiovascular disease, type 2 diabetes, Parkinson's disease, cirrhosis, gout and some cancers. Actually coffee consumption is generally safe for adults and does not harm long-term health, especially if the levels of caffeine are in moderation. However, consumption of caffeine in a larger amount which is around 1000 m