Лилия К* is offering you to have website «Healthy Lifestyle» remembered
Do you want us to remember the «Healthy Lifestyle» website?
Yes No
Прогноз погоды

“The reason I exercise is for the quality of life I enjoy.” – Kenneth H. Cooper

Study: Caffeine affects teen boys more


Study: Caffeine affects teen boys more

(CNN) -- Caffeine affects boys more than girls, but only after they hit puberty, according to a new study published in the latest edition of the journal Pediatrics.

Jennifer Temple, lead study author and an associate professor at the University at Buffalo School of Public Health and Health Professions, first noticed a trend a few years ago while researching children's diets. Temple, who has studied caffeine for about eight years, was surprised by the amount of soda or coffee the children in her studies were drinking.

When she looked at the medical literature, there was little that spoke about the impact caffeine might have on growing bodies. So that's what her team decided to study.

"We didn't go into this research with a hypothesis about sex differences," Temple said, "but that's what kept coming up in our research."

About 73% of children have some kind of caffeine daily, the American Academy of Pediatrics says. AAP would prefer that children not consume caffeine. The Food and Drug Administration does not set a standard for what is considered a safe amount for children. For adults, a safe daily level, the FDA says, is the equivalent of what is found in about four or five cups of coffee.

Caffeine has no nutritional value. While it is a psychoactive stimulant that can improve alertness and moods, it is also habit forming. In large doses it can cause nervousness, tension and sleeplessness. It can also increase blood pressure and lower a person's heart rate, no matter what their age.

Ninety-five children participated in Temple's study. Scientists gave them three different drinks: orange juice, a lemon-lime flavored soda, and a kind of lemonade with either a placebo added or caffeine. Neither the children nor their parents knew which of the drinks had caffeine.

The scientists then tested the children's blood pressure and heart rate on six occasions.

They found no gender difference in the way caffeine affected younger kids -- children age 8 to 9. But when they looked at the older children's results, they found boys between 15 and 17 reacted more immediately to caffeine than girls did. Teen boys' heart rates decreased more and their systolic blood pressure went up higher than girls'. Similar sex differences have been found in adults in past studies.

The difference maker, scientists think, is puberty. They aren't sure, however, if it is something physiological -- like the amount of steroid hormones an adolescent makes compared to a younger child -- or if it is due to other factors.

The scientists also saw a difference in the way caffeine affected girls depending on where they were in their menstrual cycle. Decreases in heart rate were greater if a girl was in the mid-follicular phase of her period (near the beginning of the cycle), compared to when she was in the mid-luteal stage (toward the end of the cycle right before menstruation).


Follow: Caffeine, children
Published by , 10.09.2014 at 15:36
Статистика 1
Показы: 1 Охват: 0 Прочтений: 0


To show the previous comments (%s from %s)
Marilynn May
Marilynn May 11 September 14 01:20 I think it depends on the caffeine source you get it from. If you get it from soda, not green tea, then you are absolutely in risk. Text hided expand
Vanilla 11 September 14 02:18 I find it funny as someone that supports cannabis and psychedelics. Text hided expand
Goran 14 September 14 06:16 Caffeine and puberty — now that has to be a great combination! Text hided expand
Show new comments
All comments are shown: 3
Facebook comments

Site search

Last comments

Anna K
What a great list of suggestions!! I suffer from colitis but have not had a bad flare-up in years b…
Anna K 10 Strategies for Better Digestion
Anna K
I'm so glad I read this post. I am so over kale at this point but was not sure what I should switch…
Anna K 10 Superfoods Healthier Than Kale
Drew Vics
Would be nice if you formatted the article correctly and actually asked permission before posting m…
Drew Vics Shocking Ingredients in Beer
Anna K
Anna K
Yum! I don't eat enough Manangese and can use some right now as a matter of fact. I never used to t…
Anna K 5 Ways Pumpkin Boosts Immune Health
Anna K
Phebe Paul
Fucked it! I am always use rude thoughts.
Phebe Paul A dirty mind is a SHARPER mind: Sexual thoughts boost memory, expert claims
Phebe Paul
Its not so simple. I reed another opinion about vaccine.
Phebe Paul Ten reasons why you shouldn't vaccinate your children
Phebe Paul
I heard that Chinese Cabbage is full of chemicals(
Phebe Paul 10 Superfoods Healthier Than Kale
Charles King
This article needs a few illustrations. I can visualize several ways to do each of these
Charles King 6 Plyometrics Exercises For A Better Workout In Less Time
Charles King
I need to share this article to my wife because she is pregnant now.
Charles King Phthalates risk damaging children’s IQs in the womb, US researchers suggest
Charles King
Charles King
My mom experienced cancer! It awful tragedy nut it can be cured!
Charles King The top 7 natural cures for cancer revealed
Charles King
I've never heard about this exercise! Will try tomorrow at gym.
Charles King An Unexpected Exercise That Targets Belly Fat
Charles King
I hear that ginger is indeed an helpful in such cases!
Charles King 10 Strategies for Better Digestion
Charles King
How about yoga??? it helps not only to be in a good shape, but also to refresh your mind!
Charles King A dirty mind is a SHARPER mind: Sexual thoughts boost memory, expert claims
Charles King
this article must be shared to all moms! I don't understand what for do we need to do that????
Charles King Ten reasons why you shouldn't vaccinate your children
Charles King
so healthy list! Great! thanks for reminders like that)
Charles King 10 Superfoods Healthier Than Kale
Be afraid of everything.
Tommy Phthalates risk damaging children’s IQs in the womb, US researchers suggest