Featured Research

from universities, journals, and other organizations

Caffeine affects boys, girls differently after puberty, study finds

Date:
June 16, 2014
Source:
University at Buffalo
Summary:
Caffeine intake by children and adolescents has been rising for decades, due in large part to the popularity of caffeinated sodas and energy drinks, which now are marketed to children as young as four. Despite this, there is little research on the effects of caffeine on young people. Following a recent study, one researcher remarked: "We found an interaction between gender and caffeine dose, with boys having a greater response to caffeine than girls."

Caffeine intake by children and adolescents has been rising for decades, due in large part to the popularity of caffeinated sodas and energy drinks, which now are marketed to children as young as four. Despite this, there is little research on the effects of caffeine on young people.

Related Articles


One researcher who is conducting such investigations is Jennifer Temple, PhD, associate professor in the Department of Exercise and Nutrition Sciences, University at Buffalo School of Public Health and Health Professions.

Her new study finds that after puberty, boys and girls experience different heart rate and blood pressure changes after consuming caffeine. Girls also experience some differences in caffeine effect during their menstrual cycles.

The study, "Cardiovascular Responses to Caffeine by Gender and Pubertal Stage," will be published online June 16 in the July 2014 edition of the journal Pediatrics.

Past studies, including those by this research team, have shown that caffeine increases blood pressure and decreases heart rate in children, teens and adults, including pre-adolescent boys and girls. The purpose here was to learn whether gender differences in cardiovascular responses to caffeine emerge after puberty and if those responses differ across phases of the menstrual cycle.

Temple says, "We found an interaction between gender and caffeine dose, with boys having a greater response to caffeine than girls, as well as interactions between pubertal phase, gender and caffeine dose, with gender differences present in post-pubertal, but not in pre-pubertal, participants.

"Finally," she says, "we found differences in responses to caffeine across the menstrual cycle in post-pubertal girls, with decreases in heart rate that were greater in the mid-luteal phase and blood pressure increases that were greater in the mid-follicular phase of the menstrual cycle.

"In this study, we were looking exclusively into the physical results of caffeine ingestion," she says. Phases of the menstrual cycle, marked by changing levels of hormones, are the follicular phase, which begins on the first day of menstruation and ends with ovulation, and the luteal phase, which follows ovulation and is marked by significantly higher levels of progesterone than the previous phase.

Future research in this area will determine the extent to which gender differences are mediated by physiological factors such as steroid hormone level or by differences in patterns of caffeine use, caffeine use by peers or more autonomy and control over beverage purchases, Temple says.

This double-blind, placebo-controlled, dose-response study was funded by a grant from the National Institute on Drug Abuse of the National Institutes of Health.

It examined heart rate and blood pressure before and after administration of placebo and two doses of caffeine (1 and 2 mg/kg) in pre-pubertal (8- to 9-year-old; n = 52) and post-pubertal (15- to 17-year-old; n = 49) boys (n = 54) and girls (n = 47).


Story Source:

The above story is based on materials provided by University at Buffalo. The original article was written by Pat Donovan. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jennifer L. Temple, Amanda M. Ziegler, Adam Graczyk, Ashley Bendlin, Teresa Sion, and Karina Vattana. Cardiovascular Responses to Caffeine by Gender and Pubertal Stage. Pediatrics, June 2014 DOI: 10.1542/peds.2013-3962

Cite This Page:

University at Buffalo. "Caffeine affects boys, girls differently after puberty, study finds." ScienceDaily. ScienceDaily, 16 June 2014. <www.sciencedaily.com/releases/2014/06/140616093323.htm>.
University at Buffalo. (2014, June 16). Caffeine affects boys, girls differently after puberty, study finds. ScienceDaily. Retrieved March 3, 2015 from www.sciencedaily.com/releases/2014/06/140616093323.htm
University at Buffalo. "Caffeine affects boys, girls differently after puberty, study finds." ScienceDaily. www.sciencedaily.com/releases/2014/06/140616093323.htm (accessed March 3, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Tuesday, March 3, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

This Nasal Treatment Could Help Ease Migraine Pain

This Nasal Treatment Could Help Ease Migraine Pain

Newsy (Mar. 2, 2015) Researchers gave lidocaine to 112 patients, and about 88 percent of the subjects said they needed less migraine-relief medicine the next day. Video provided by Newsy
Powered by NewsLook.com
How Facebook Use Can Lead To Depression

How Facebook Use Can Lead To Depression

Newsy (Mar. 1, 2015) Margaret Duffy of the University of Missouri talks about her study on the social network and the envy and depression that Facebook use can cause. Video provided by Newsy
Powered by NewsLook.com
The Best Foods to Battle Stress

The Best Foods to Battle Stress

Buzz60 (Feb. 26, 2015) If you&apos;re dealing with anxiety, there are a few foods that can help. Krystin Goodwin (@krystingoodwin) has the best foods to tame stress. Video provided by Buzz60
Powered by NewsLook.com
Sleeping Too Much Or Too Little Might Increase Stroke Risk

Sleeping Too Much Or Too Little Might Increase Stroke Risk

Newsy (Feb. 26, 2015) People who sleep more than eight hours per night are 45 percent more likely to have a stroke, according to a University of Cambridge study. 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