Caffeine is the most active substance in coffee. The health effects of caffeine become statistically significant when you consume at least four cups of coffee each day. These effects include sleeplessness, anxiety and irritability, especially in individuals who are susceptible to caffeine. Any attempt to derive health benefits from coffee should therefore limit coffee consumption to three cups per day. It is also important to skip cream and sugar when drinking coffee.
Coffee increases your alertness, which can be beneficial for certain tasks. A scientific study published in the Journal of Experimental Psychology found that caffeine improves the ability of students to detect grammatical errors in written text, especially errors in verb tense and subject verb agreement. The same study did not show an improvement in the students’ ability to detect misspelled words.
According to our friends at http://www.my-cap.com, caffeine may also reduce the risk of depression in women. A study at Harvard University appearing in The Archives of Internal Medicine concluded that two to three cups of coffee per day reduce the risk of depression in women by 15 percent. A minimum of four cups of coffee per day reduce that risk by 20 percent. The reason for this improvement is that caffeine modulates the release of mood transmitters in the brain according to Dr. Albert Ascherio, a researcher in the Harvard study. Continue reading