4 Harmful Effects of Caffeine

by Dr. Edward Group DC, NP, DACBN, DCBCN, DABFM Published on , Last Updated on


Whether you consume tea, coffee, sodas, energy drinks, or chocolate, you’re consuming some form of caffeine. This post is not meant to demonize caffeine altogether; in fact, at small amounts, caffeine has certain health benefits. It’s the excess use of caffeine that is an issue, as this compound can be addictive.[1] Caffeine doesn’t even provide true energy—it is merely a stimulant. Still, there are many who rely on it every day to get them going. Are you one those people?

4 Harmful Effects of Caffeine

Caffeine affects the body in a number of ways. Caffeine may promote dehydration and disrupt normal digestion. Additionally, caffeine is addictive and at the root of caffeine addiction is a physiological dependency that forms within the brain. Here is a deeper look at a few of the side effects that accompany caffeine.

1. Caffeine Encourages Dependency

Caffeine suppresses a chemical called adenosine, which is secreted by the brain to relax the body.[2] Suppression of this compound by caffeine affects the body by making it feel a tense surge of energy. While this surge of energy is truly stimulating, the threshold of stimulation continues to rise, making the brain require increasing levels of caffeine to simulate the same effect. This creates dependency on users who require caffeine on a daily basis to get moving.

2. Caffeine Promotes Dehydration

Another negative effect of caffeine is dehydration. Caffeine acts as a diuretic, which may be a benefit to individuals dealing with bloating.[3] For others, however, caffeinated drinks are among the biggest contributors to dehydration—despite a high volume of liquid consumption with these beverages. Dehydrated cells have difficulty absorbing nutrients, and they also have problems eliminating waste.

3. Caffeine May Exhaust the Adrenal Glands

Large amounts of caffeine can lead to adrenal exhaustion precipitated by the “rush” that it creates in the body. Adrenal exhaustion is particularly pronounced in children, who are now consuming more caffeine than ever before thanks to soda machines in public schools. The common symptoms of adrenal burnout include irritability, anxiety, trouble sleeping, hunger fluctuations, mood swings, and lethargy.

4. Caffeine Slows Digestion

Perhaps the most negative impact caffeine has on the body occurs in the digestive system. It blocks the absorption of magnesium, a key mineral that is essential to the colon’s regulation of normal, healthy bowel movements.[4] Coffee itself compounds the problem by acting as a laxative, causing the bowels to move prior to the absorption of water and mineral nutrients. This reinforces body dehydration and malnourishment. Coffee also increases stomach acid levels, and higher acid levels can cause permanent damage to the intestinal lining.

How to Reduce Caffeine Intake

A better way to counter caffeine’s effects is to reduce your intake of coffee and soda and replace them with organic white or green tea (which contains minimal caffeine), organic fruit juice, or distilled water. Supplements that help cleanse the colon, rehydrate cells, and stimulate digestive enzymes are also recommended.

Have you given up caffeine? What effects have you noticed? What tips can you offer? Leave a comment below and share your thoughts with us.

References (4)
  1. Satel S. Is caffeine addictive?--a review of the literature. Am J Drug Alcohol Abuse. 2006;32(4):493-502.
  2. Ribeiro JA, Sebastlao AM. Caffeine and adenosine. J Alzheimers Dis. 2010;20 Suppl 1:S3-15. doi: 10.3233/JAD-2010-1379.
  3. Maughan RJ, Griffin J. Caffeine ingestion and fluid balance: a review. J Hum Nutr Diet. 2003 Dec;16(6):411-20.
  4. Bergman EA, Massey LK, Wise KJ, Sherrard DJ. Effects of dietary caffeine on renal handling of minerals in adult women. Life Sci. 1990;47(6):567-64.

†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. Global Healing Center does not dispense medical advice, prescribe, or diagnose illness. The views and nutritional advice expressed by Global Healing Center are not intended to be a substitute for conventional medical service. If you have a severe medical condition or health concern, see your physician.

  • As extensive scientific analysis and safe consumption over centuries make clear, caffeine is safe. What’s more, contrary to this article, a growing body of research continues to demonstrate the potential health benefits of coffee and caffeine. Bottom line: consumers should have every confidence in enjoying coffee and other caffeinated products. Of course, just as with other ingredients and sources of calories, moderation is a good rule of thumb. – American Beverage Association

  • gbear

    Andrew Saul of “Doctor Yourself”(dot)com has extensive info on negative caffeine effects. PubMed states 3-5 cups per day keeps Alzsheimers away. I buy green beans & light roast myself. Most retailed coffee is stale,oxidized.Fresh roast is good for 7-10 days. Starbucks pulls their coffee after 1-yr.,Peets in 90 days.Both are oxidized especially with sub retailers who do not inspect dates. Roasts beyond medium are burned & oxidized. The oils become destroyed. Green tea is good depending on origins.China & India have heavy metal problems with most of their teas & herbs.There are many substitutes for coffee.Essentially find the source of needing the stimulant. Tyrosine,lipoic acid,TMG,etc. are good stimulants as are nootropics. Juicing sprouts of wheat,& legumes are excellent energizers. The list is endless,do your research when you have time between raising a family,working 3-jobs,battling the NWO & IRS. Humor is best for the immune system & very inexpensive.=D

  • Dvogel

    And American Beverage Association is trying to save it’s existence by trying to prove that soft drinks are okay.

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