Mar. 29, 2011
Cross-posting from MHNews by'13
A few weeks ago, my mother shared her first energy drink experience with me. She said that after drinking it, she had never before felt so focused to accomplish daily tasks. For my mom, this is a big deal. Although I tend to steer away from energy drinks, I thought, “Wow, this must be a miracle-in-a-can!” The next time I was at the local corner store, I bought one and expected a burst of motivation to rush through me. An hour after I drank it, I felt nothing. So what is the hype with energy drinks? How do they work? I decided to get some answers.
One of the most common ingredients in energy drinks is caffeine, a stimulant which increases blood pressure and heart rate. Stimulants produce many psychological effects as well. Some of these more complex effects were discussed at the Biology department seminar on Feb. 15, where John D. Salamone, Ph.D., from the UConn. Department of Psychology, gave a lecture about his research on adenosine antagonists. Salamone said that increased levels of adenosine, a neurotransmitter in the brain, may cause sleepiness, while caffeine, which blocks adenosine, reverses this effect, producing the sense of wakefulness associated with a caffeine rush. Dr. Salamone also mentioned that an individual tolerance to caffeine will vary depending on both genetic factors and frequency of consumption...
For the full Story please go visit http://themhnews.org/2011/03/health/energy-drinks-friend-or-foe