Featured Research

from universities, journals, and other organizations

Coffee drinking in your genes? Genetic variants in two genes linked with caffeine intake

Date:
April 6, 2011
Source:
Public Library of Science
Summary:
Two genes in which variation affects intake of caffeine, the most widely consumed stimulant in the world, have been discovered. Researchers examined genetic variation across the entire genome of more than 47,000 individuals.

Researchers have discovered two genes in which variation affects intake of caffeine, the most widely consumed stimulant in the world.
Credit: iStockphoto/Sergey Galushko

Two genes in which variation affects intake of caffeine, the most widely consumed stimulant in the world, have been discovered. A team of investigators from the National Cancer Institute, Harvard School of Public Health, Brigham and Women's Hospital, and the University of North Carolina at Chapel Hill examined genetic variation across the entire genome of more than 47,000 individuals from the U.S., as described in the open-access journal PLoS Genetics.

Related Articles


The genes identified were CYP1A2, which has previously been implicated in the metabolism of caffeine, and AHR, involved in the regulation of CYP1A2. Individuals with the highest-consumption genotype for either gene consumed ~40 mg more caffeine than those with the lowest-consumption genotype, equivalent to the amount of 1/3 cup of caffeinated coffee, or 1 can of cola.

Caffeine is implicated in numerous physiological and medical conditions; it affects sleep patterns, energy levels, mood, and mental and physical performance. The identification of genes that have an impact on daily consumption offers opportunities to better understand these conditions. Further exploration of the identified genetic variants may provide insight into the speed of caffeine metabolism, how long caffeine circulates in the blood, or how strong the physiological effects of consuming a given amount of caffeine are.

Apart from smoking, genetic determinants of lifestyle behaviors have generally not been consistently described. This study is among the first to examine the entire genome for a relationship between genetics and caffeine intake, a lifestyle behavior relevant to over 90% of U.S. adults. The study's success also suggests that additional genetic determinants of dietary and lifestyle behaviors may be identified in the future using a similar genome-based research strategy.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Marilyn C Cornelis, Keri L Monda, Kai Yu, Nina Paynter, Elizabeth M Azzato, Siiri N Bennett, Sonja I Berndt, Eric Boerwinkle, Stephen Chanock, Nilanjan Chatterjee, David Couper, Gary Curhan, Gerardo Heiss, Frank B Hu, David J Hunter, Kevin Jacobs, Majken K Jensen, Peter Kraft, Maria Teresa Landi, Jennifer A Nettleton, Mark P Purdue, Preetha Rajaraman, Eric B Rimm, Lynda M Rose, Nathaniel Rothman, Debra Silverman, Rachael Stolzenberg-Solomon, Amy Subar, Meredith Yeager, Daniel I Chasman, Rob M van Dam, Neil E Caporaso. Genome-Wide Meta-Analysis Identifies Regions on 7p21 (AHR) and 15q24 (CYP1A2) As Determinants of Habitual Caffeine Consumption. PLoS Genetics, 2011; 7 (4): e1002033 DOI: 10.1371/journal.pgen.1002033

Cite This Page:

Public Library of Science. "Coffee drinking in your genes? Genetic variants in two genes linked with caffeine intake." ScienceDaily. ScienceDaily, 6 April 2011. <www.sciencedaily.com/releases/2011/04/110406091731.htm>.
Public Library of Science. (2011, April 6). Coffee drinking in your genes? Genetic variants in two genes linked with caffeine intake. ScienceDaily. Retrieved April 20, 2015 from www.sciencedaily.com/releases/2011/04/110406091731.htm
Public Library of Science. "Coffee drinking in your genes? Genetic variants in two genes linked with caffeine intake." ScienceDaily. www.sciencedaily.com/releases/2011/04/110406091731.htm (accessed April 20, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Monday, April 20, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Humanoid Robot Can Recognise and Interact With People

Humanoid Robot Can Recognise and Interact With People

Reuters - Innovations Video Online (Apr. 20, 2015) An ultra-realistic humanoid robot called &apos;Han&apos; recognises and interprets people&apos;s facial expressions and can even hold simple conversations. Developers Hanson Robotics hope androids like Han could have uses in hospitality and health care industries where face-to-face communication is vital. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Labour Party Warns Britain's Health Service 'on Life Support'

Labour Party Warns Britain's Health Service 'on Life Support'

AFP (Apr. 20, 2015) Britain&apos;s opposition Labour Party Monday claimed the National Health Service (NHS) was &apos;on life support&apos; as it turned its attention to the state-run service, which is a key issue for the UK&apos;s May 7 general election. Video provided by AFP
Powered by NewsLook.com
Sierra Leone Students Back to School After Long Ebola Closure

Sierra Leone Students Back to School After Long Ebola Closure

Reuters - News Video Online (Apr. 20, 2015) After an eight-month break, children in Sierra Leone return to school for the first time since the beginning of the Ebola outbreak. Nathan Frandino reports. Video provided by Reuters
Powered by NewsLook.com
Teen E-Cigarette Use Triples, Government Debates Regulations

Teen E-Cigarette Use Triples, Government Debates Regulations

Newsy (Apr. 19, 2015) The Centers for Disease Control and Prevention says in 2014, 13.4 percent of high school students reported smoking an e-cigarette within 30 days. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins