eCureMe logo

  eCureMe home eCureMe log In Sign Up!
eCureMe Life : Your Healthy Living. Click Here!
Welcome, medical contents search May 9, 2013
       eCureMe Life
       Medical Supplies
       Calorie Count
       Physician Search
       Message Board
      E-mail Doctor
      E-mail Veterinarian
      Health-O-Matic Meter
      Calorie Count
      Natural Medicine
      Vitamins & Minerals
      Alternative Living
      My Health Chart
      Diseases & Treatments
      Atlas of Diseases
      Sexually Transmitted
      Drug Information
      Illegal Drugs
      Lab & Diagnostic Tests
      Internal Medicine
      Women’s Health
      Eye Disorders
      Skin Disorders
      Mental Health
      Resource Links
      Physician Directory
      Dentist Directory
      Hospital Directory

Rethinking Your Morning Coffee
Spreading Your Caffeine Intake Throughout The Day May Be Better Than Gulping It At Breakfast

May 17th, 2004

By Louis Wittig : eCureMe Staff Writer

Can’t get up without your morning coffee? Chances are you’re one of the many Americans who frontloads their coffee consumption, drinking a couple cups before noon in order to keep fresh all day. However a new study, published in the journal Sleep, suggests that your familiar caffeine infusion tapers off just when your body needs it the most.

You may not give your coffee drinking habits much thought, but Dr. James Wyatt of Rush University Medical Center in Chicago does. Dr. Wyatt and a team researchers wanted to find out whether caffeine helped to mitigate sleepiness because it interfered with the body’s circadian rhythm (the biological process that makes people sleepy according to daily cycles, regardless of how tired they are) or because it interrupted a chemical process that makes people sleepier the longer they’ve been awake. 16 volunteers were gathered and observed for a month. All were made to live in windowless rooms, so they wouldn’t know day from night, and thus their circadian rhythms would be irrelevant. Then they were made to stay up for 29 hours at a spell. One group of participants was given low doses of caffeine every hour, each equal to about two ounces of coffee. The other group wasn’t given any stimulants.

The group that was caffeinated regularly did much better on cognitive tests, and fell asleep less often. Unlike other studies, where volunteers were given a single, massive dose of caffeine, participants in this study largely avoided any negative side effects, like sleeplessness or tremors.

The scientists drew two important conclusions. The first was that, since circadian rhythms weren’t contributing to the volunteer’s sleepiness, the caffeine they received must have been interfering with the chemical process that makes people drowsy. This adds support to the hypothesis that caffeine blocks the receptors in the brain that process adenosine, a neurotransmitter that builds up the longer one has been awake.

Their second conclusion was that dosage and timing matter. Previous studies have shown that when a lot of caffeine is consumed all at once, its effects taper off within a few hours. So when you stop at Starbucks on your way to work, the jolt it gives you won’t be there by the afternoon. The volunteers in this study managed to keep up for more than a day by being on a more even keel, with constant, low doses of caffeine. Following that model by drinking a little coffee all day long " is an entirely new way to use caffeine to maintain alertness and performance in the face of sleep loss," Wyatt told reporters.

Contact Louis Wittig at

View Previous Articles

medical contents search

Home   |   About Us   |   Contact Us   |   Employment Ad   |   Help

Terms and Conditions under which this service is provided to you. Read our Privacy Policy.
Copyright © 2002 - 2003 eCureMe, Inc All right reserved.