Navigation Links
Cavemen Knew It: Cooked Meat Offers More Energy
Date:11/9/2011

WEDNESDAY, Nov. 9 (HealthDay News) -- Cooked meat provides more energy than raw meat and may have helped drive human evolution, according to a new study.

The finding that cooking increases the energy we derive from meat also raises questions about the way modern humans eat, said Rachel Carmody, a student in the department of human evolutionary biology at Harvard University.

In her study, she fed two groups of mice different diets of meat or sweet potatoes over 40 days. The food was prepared four ways: raw and whole; raw and pounded; cooked and whole; and cooked and pounded.

Changes in each mouse's body mass index were tracked, along with how often they used an exercise wheel. The results clearly showed that cooked meat provided more energy to the mice than raw meat, Carmody said.

The study appears in the Proceedings of the National Academy of Sciences.

"The results of this paper are equally relevant to human evolution and to the way we think about food today," Carmody said in a Harvard news release.

"It is astonishing that we don't understand the fundamental properties of the food we eat. All the effort we put into cooking food and presenting it -- mashing it up, or cutting it, or slicing or pounding it -- we don't understand what effect that has on the energy we extract from food, and energy is the primary reason we eat in the first place," she noted.

Early humans were eating raw meat as early as 2.5 million years ago but they underwent a sudden change about 1.9 million years ago. Their bodies became larger, the size and complexity of the brain increased, and adaptations for long-distance running appeared.

Some theories suggest that increased meat in the diet produced these evolutionary advances, but Carmody's findings point to another reason -- cooking meat provided early humans with more energy.

More information

The Smithsonian has more about human evolution.

-- Robert Preidt

SOURCE: Harvard University, news release, Nov. 7, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Cooked Right, Fish Can Help a Womans Heart
2. In a childhood cancer, basic biology offers clues to better treatments
3. Delaware Fire Service offers important lessons for fire prevention programs nationwide
4. Embryonic signal drives pancreatic cancer and offers a way to kill it
5. Increased use of bikes for commuting offers economic, health benefits
6. Multiple malaria vaccine offers protection to people most at risk
7. Heart drug offers possible treatment for patients facing respiratory failure
8. Study offers insight for returning troops and their relationships
9. U.S. Offers Health-Care Pamphlets in Spanish
10. Want to keep your exercise resolutions? New research offers pointers
11. Doctor Offers Tips on How to Travel With Kids
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/12/2017)... ... 12, 2017 , ... The American College of Medical Informatics (ACMI) will present ... the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium ... Collen, a pioneer in the field of medical informatics, this prestigious award is presented ...
(Date:10/12/2017)... ... October 12, 2017 , ... Dr. Parsa Mohebi, the ... medical article to the newly revamped Cosmetic Town journal section, featuring ... transplant procedure known as Follicular Unit Extraction (FUE). , Dr. Mohebi ...
(Date:10/12/2017)... Chapel, FL (PRWEB) , ... October 12, 2017 , ... ... is holding a treadmill relay – Miles by Moonlight to raise money for the ... donating $300 or more. , Teams will work together to keep their treadmills ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... of $3,296 in property taxes a year. In some states—like New York, New ... , By contrast, many overseas retirement havens have extremely low property-tax rates, which ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... Pepper Flow promotional review platform at the Promotional Review Committee Compliance and ... help marketers streamline the medical, legal, and regulatory review (MLR) process – ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... , Oct. 12, 2017   Divoti USA ... Jewelry up to the standard of the latest FDA requirements, which ... 2017). Anyone in need of Medical ID jewelry such ... Alert Jewelry are engraved in terms of the new ... Divoti offers ...
(Date:10/11/2017)... , Oct. 11, 2017  Caris Life Sciences ... on fulfilling the promise of precision medicine, today announced ... joined Caris, Precision Oncology Alliance™ (POA) as its 17 ... centers, the St. Jude Crosson Cancer Institute will help ... the use of tumor profiling, making cancer treatment more ...
(Date:10/10/2017)... Oct. 10, 2017  NDS received FDA 510(k) clearance in May ... battery-powered display stand specifically designed for endoscopy environments. An innovative secondary ... a clinical solution to support the improvement of patient outcomes, procedural ... ... ...
Breaking Medicine Technology: