Over the years, doctors and scientists have debated and studied the effects of coffee on the human body and brain. Some professionals say it’s bad for your health; others say it’s good for your health. Here are some effects of coffee:


Reduces Risk of All Kinds of Diseases

Coffee consumption links to a reduced risk of all kinds of medical conditions, including cirrhosis, depression, gallstones, heart disease, liver cancer, melanoma, Parkinson’s disease, prostate cancer, suicide, and Type 2 diabetes, due to its main active ingredient, caffeine.

Four or five eight-ounce cups of coffee per day reduces death rates. A study followed more than 200,000 participants for up to 30 years. The people who drank three to five cups of coffee per day, with or without caffeine, proved to be 15% less likely to die early from all causes than non-coffee drinkers. Moderate coffee drinkers see a 50% reduction in the risk of suicide because caffeine boosts production of brain chemicals that have antidepressant effects.

Inhibits Growth of Leading Causes of Death

Caffeine makes up only one of more than 1,000 chemicals in coffee. Polyphenols and antioxidants in coffee provide positive effects on the human body. Polyphenols inhibit the growth of cancer cells and lower the risk of Type 2 diabetes, the seventh leading cause of death in the U.S., and antioxidants counter cancer and heart disease, the two leading causes of death in the U.S.

Keeps You up at Night

Some people sleep great after drinking coffee at night, but others experience problems after drinking coffee after 12pm. Dr. Walter C. Willett, professor of nutrition and epidemiology at the Harvard T.H. Chan School of Public Health, said even if you fall asleep after an evening coffee, it can still interrupt your ability to catch deep sleep. Yurri Brown, a barista and founder of CoffeeGeekLab.com, said more than 400 mg of caffeine can disrupt sleep.

Helps with Alertness but Not Performance

Caffeine helps you stay awake if you’re sleep deprived, but it won’t improve your performance on tasks. Also, it isn’t a substitute for a good night’s sleep when your body repairs tissues and cleanses the brain. A good rule of thumb is to not perform any task while sleep deprived that you wouldn’t attempt while intoxicated such as driving.


In conclusion, coffee in moderation proves to be part of a healthy lifestyle, but excess caffeine negatively affects the REM cycle.

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1 Comment

  1. gwendolyn.burton-staples on July 23, 2021 at 10:59 am

    Such Great Information!!!

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