Surprisingly Negative Side Effects from Drinking Coffee

Worldwide, about 1.6 billion cups of coffee are consumed each day. On average in the US, people drink between 2-4 cups of coffee which equates to about 300 mg of caffeine per day. According to Mayo Clinic drinking up to 400 mg, or about 4 cups of coffee per day, is considered safe for most people. However, sensitivity to caffeine can vary. Therefore, some people may only be able to tolerate less than 400 mg of caffeine without negative side effects. Not necessarily. Some people may have a heightened sensitivity to caffeine in coffee that may cause negative side effects. In these cases, it may be better to avoid drinking coffee or drinking less than the 400 mg per day of caffeine. Many people drink coffee in the morning or throughout the day to increase alertness. This is because the caffeine in coffee acts as a stimulant to the central nervous system which help you feel more alert and may help with mental focus. One of the draw backs for drinking coffee may be causing insomnia if consumed before trying to fall asleep at night. Another side effect from caffeine may be increased restlessness, nervousness or irritability. This may especially be noticed if someone consumes excessive coffee and gets more than 400 mg of caffeine per day. However, if someone is more sensitive to caffeine, they may notice some heightened irritability or restlessness even after small intake of coffee.