Navigation Links
Human Brain Has Coping Mechanism for Dehydration

FRIDAY, July 25, 2014 (HealthDay News) -- The human brain can preserve oxygen to protect itself from the effects of dehydration, a new study finds.

Although dehydration significantly reduces blood flow to the brain, researchers in England have found that the brain compensates by increasing the amount of oxygen it extracts from the blood.

"This research has helped us understand a lot more about how the human brain responds to extreme exercise in extreme conditions," study first author Steven Trangmar, a researcher at Brunel University, said in a university news release. "We can now see that blood flow to this vital organ is significantly affected by dehydration. But we can also see that this is when the brain kicks in, preserving its own oxygen consumption to ensure it sustains its function."

This coping mechanism is likely what enables athletes who become dehydrated during exercise to keep going. The study authors cautioned, however, that their findings should serve as a reminder of the importance of proper hydration, noting that getting enough fluids is essential for athletes who want to maintain peak performance.

"These findings show that the brain has remarkable ways of protecting itself from extreme circumstances, however they also clearly substantiate the recommendation that people should ingest fluids during exercise to help optimize physiological function and performance," Jose Gonzalez-Alonso, a professor of exercise and cardiovascular physiology at Brunel University, said in the news release.

In conducting the study, the researchers inserted catheters in the brachial artery and internal jugular vein of 10 experienced male cyclists. Using the catheters and Doppler ultrasound technology, they measured the blood flow of the cyclists as they rode a bike to exhaustion in heat.

As they became dehydrated, the cyclists developed reduced body mass, brain blood flow and ability to exercise, as well as an increase in their internal body temperature.

The findings were published recently in the Journal of Physiology.

More information

The U.S. Centers for Disease Control and Prevention offers tips on how to prevent dehydration.

SOURCE: Brunel University, news release, July 23, 2014


Copyright©2014 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Rich Dad Education Charity Yard Sale Raises Over $650 for Habitat for Humanity of Lee and Hendry Counties
2. Human Insulin Market Worth $42 Billion by 2019 - New Report by MarketsandMarkets
3. Scientists Snipped HIV Out of Human DNA
4. Scientists Discover New Way to Make Human Platelets
5. Described novel regulator of a protein inactive in over 50 percent of human tumors
6. Human Identification Market worth $804.0 Million by 2018 - New Report by MarketsandMarkets
7. The human δ2 glutamate receptor gene is not mutated in spinocerebellar ataxia patients
8. Northeast Delta Human Services Authority Builds Upon Integrated Care Momentum
9. Team studies immune response of Asian elephants infected with a human disease
10. Oetzis non-human DNA
11. Human Outreach Project Sees Incredible Progress in the Kilimanjaro Kids Community
Post Your Comments:
Related Image:
Human Brain Has Coping Mechanism for Dehydration 
(Date:10/12/2017)... ... October 12, 2017 , ... First Healthcare Compliance (FHC), an ... showcase a range of technology and learning solutions at the 68th Annual American ... to be held October 14–18, 2017 at the Mandalay Bay Resort in Las ...
(Date:10/12/2017)... ... 12, 2017 , ... Planet Fitness, one of the largest and fastest growing ... open a flagship location in Covington, LA at 401 N. U.S. Highway 190, in ... to Office Depot in the Holiday Square shopping center. Its location allows it to ...
(Date:10/12/2017)... ... October 12, 2017 , ... IsoComforter, Inc. ( ... today the introduction of an innovative new design of the shoulder pad. The ... get maximum comfort while controlling your pain while using cold therapy. By utilizing ice ...
(Date:10/12/2017)... ... October 12, 2017 , ... Asante, a nationally recognized health ... expanded their existing home health joint venture through an agreement, effective October 1, ... joint venture home health company with Asante, delivering clinically integrated care, for the ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... Hair Restoration, has recently contributed a medical article to the newly revamped ... Dr. Mohebi’s article spotlights the hair transplant procedure known as Follicular Unit ...
Breaking Medicine News(10 mins):
(Date:9/23/2017)... Sept. 22, 2017 Janssen Biotech, Inc. (Janssen) ... letter from the U.S. Food and Drug Administration (FDA) ... sirukumab for the treatment of moderately to severely active ... clinical data are needed to further evaluate the safety ... active RA. ...
(Date:9/19/2017)... medical device company developing a non-invasive, robotically assisted, platform therapy that uses pulsed sound energy ... ... Jim Bertolina, PhD ... Tom Tefft ... executive Josh Stopek , PhD, who has led R&D and business development teams at ...
(Date:9/18/2017)... Sept. 18, 2017 EpiVax, Inc. ... bioinformatics and immune engineering, today announced a ... A (H7N9) vaccine. ... seasonal influenza and presents a challenge for ... exposure to be effective. Using state-of-the-art bioinformatics and ...
Breaking Medicine Technology: