Caffeine and Dehydration

Caffeine has long been thought to act as a diuretic. Many doctors advised their patients to avoid caffeinated drinks especially if they had the flu or a virus because of the possibility of dehydration. Now researchers are singing a different tune.


Caffeine is a popular and relatively safe drug. It's very popular in many cultures because it's found in teas and coffees. Coffee is probably one of the most popular sources of caffeine. Tea has a lot less caffeine than coffee. Caffeine is said to enhance mental alertness and mental function. Caffeine is also a rich source of antioxidants.

Most studies found that drinking three or four cups of a caffeinated drink such as coffee or tea every day wasn't harmful. Typically, the benefits of these drinks outweighed the risks. But drinking more than four cups of a caffeinated drink could cause side effects.

Side effects from too much caffeine

  • Heart palpitations: If you have heart or thyroid problems, caffeine can cause heart palpitations. Check with your doctor before drinking caffeinated drinks.
  • Jitteriness: Caffeine often gives people a buzz if they drink too much. Cut back on caffeine consumption to relieve the jitters
  • Sleeplessness: Caffeine is a stimulant that can keep you up at night. Drink less caffeinated drinks during the day plus no caffeine after dinner to make sure you can sleep.

Individuals with kidney problems should be careful about how much caffeine they drink. Even though caffeine does not cause dehydration, it causes increased excretion of minerals such as sodium (salt). This can affect your body's salt and mineral balance. If you have any questions about your health related to caffeine, it's always wise to ask your doctor for advice.

Caffeine and dehydration

Human studies to check the effects of caffeine and hydration have shown that daily regular consumption of caffeine does not cause the body to lose fluids. Caffeine acts much like water. Exercising under hot conditions while drinking caffeinated drinks didn't cause dehydration as originally thought.

Basically, all the studies prove that caffeine is not the powerful diuretic as once believed.

Caffeine has gotten a bad rap for many years. Most doctors thought caffeinated drinks caused dehydration and advised their patients to avoid it especially if they had the flu. Today, researchers have proved that caffeine is not a diuretic as once believed. Drinking too many caffeinated drinks can have a negative effect on your body, so limit your daily intake of caffeine and enjoy its many positive.

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