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Eating habits, body fat related to differences in brain chemistry

People who are obese may be more susceptible to environmental food cues than their lean counterparts due to differences in brain chemistry that make eating more habitual and less rewarding, according to a National Institutes of Health study published in Molecular Psychiatry.

Researchers at the NIH Clinical Center found that, when examining 43 men and women with varying amounts of body fat, obese participants tended to have greater dopamine activity in the habit-forming region of the brain than lean counterparts, and less activity in the region controlling reward. Those differences could potentially make the obese people more drawn to overeat in response to food triggers and simultaneously making food less rewarding to them. A chemical messenger in the brain, dopamine influences reward, motivation and habit formation.

“While we cannot say whether obesity is a cause or an effect of these patterns of dopamine activity, eating based on unconscious habits rather than conscious choices could make it harder to achieve and maintain a healthy weight, especially when appetizing food cues are practically everywhere,” said Kevin D. Hall, Ph.D., lead author and a senior investigator at National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of NIH. “This means that triggers such as the smell of popcorn at a movie theater or a commercial for a favorite food may have a stronger pull for an obese person — and a stronger reaction from their brain chemistry — than for a lean person exposed to the same trigger.”

Study participants followed the same eating, sleeping and activity schedule. Tendency to overeat in response to triggers in the environment was determined from a detailed questionnaire. Positron emission tomography (PET) scans evaluated the sites in the brain where dopamine was able to act.

According to the Centers for Disease Control and Prevention, more than one-third of U.S. adults are obese. Obesity-related conditions include heart disease, type 2 diabetes and certain types of cancer, some of the leading causes of preventable death.

“These findings point to the complexity of obesity and contribute to our understanding of how people with varying amounts of body fat process information about food,” said NIDDK Director Griffin P. Rodgers, M.D. “Accounting for differences in brain activity and related behaviors has the potential to inform the design of effective weight-loss programs.”

The study did not demonstrate cause and effect among habit formation, reward, dopamine activity, eating behavior and obesity. Future research will examine dopamine activity and eating behavior in people over time as they change their diets, physical activity, and their weight.

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The above story is based on materials provided by NIH/National Institute of

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Diet And Weight Loss News — Sciencedaily
— Courtesy “Science News Daily” (ScienceNewsDaily.com)

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    • ipat314
    • September 10, 2014
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    Yumm! Your lunch looked gooooooood! 

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    • PurrpleCheetah3
    • September 10, 2014
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    Yes!!got here early also you guys are amazing!

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    • Sarah Elizabeth
    • September 10, 2014
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    Yay I got here early
    

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    So happy to watch this vlog, i was bored! you saved me from boredom hehe <3

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    Can’t wait for the Halloween haunt vlog!!!! You guys are beast!!!

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    • Meghann Reini
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    Got so excited for the vlog today. Love your outfit!! 

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    • dudewheresmygnome08
    • September 10, 2014
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    Kayleigh! You look good. So jealous that you have a gym at home. Great
    work! 

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    • heyheyitskaren
    • September 10, 2014
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    matts lunch looks sooo good!! what did you put on the chicken kayleigh?

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    • Inspired jewell
    • September 10, 2014
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    For the people that cant sleep or work nights it really is awesome when
    you upload at 1or 2am it helps with boredom. Keep up the great work <3 y
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    • Sabrina Davis
    • September 10, 2014
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    🙂 :)

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    • September 10, 2014
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    I neeeeeeed that sports bra! Where’s it from?! I love it! 

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    • Itzel Gonzalez
    • September 10, 2014
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    Under 50 views! Sweet! Great video Kayleigh. :)

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    • Shumailah Farhat
    • September 10, 2014
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    I was looking on my Facebook and twitter thinking no I won’t be able to
    watch the vlog before going to bed. But I did. Yay! Lol

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    • Blanca Molina
    • September 10, 2014
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    Yay love you guys<3

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    • Larnzy Barnzy
    • September 10, 2014
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    I love watching your videos, I think you post them really late at night,
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    they are amazing 

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    • Austin Harner
    • September 10, 2014
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    I love you guys!! I started watching you guys once I saw the kings dominion
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    • Sabrina Davis
    • September 10, 2014
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    I was waiting and bam you upload! Love u guys!!

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    • Zbeba Fuentes
    • September 10, 2014
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    Kaylie do a food Channel please

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    • jsuzette123
    • September 10, 2014
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    Ahh nvrmind I see in the vid. Didn’t dye it, but u shld looks rlly nice
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    • Jeremy Carragher
    • September 10, 2014
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    3 of 3 people found the following review helpful
    4.0 out of 5 stars
    Not all PWs are created the same, July 5, 2014
    By 

    This review is from: Cellucor C4 Extreme Fruit Punch – 30 Servings (Health and Beauty)
    I’ve been lifting for 3 years now. I’ve went through my phases and now have a very limited supplement list that I would recommend. If you’re reading reviews good job. Don’t just blindly purchase something because the guy bigger than you recommended it.

    PW’s Generalized:

    Preworkout supplements are great ways to get a little extra boost at the gym. Key word is boost. These shouldn’t be a staple in any lifters regimen. I went through a phase of taking Jack3d (the original) during every session. I loved the rush and the results. After awhile I realized that I didn’t need to be so dependent on it, oh yea and some people apparently died from it as well.

    I began to scale down on PW’s in general, trying a few of the most recommended (C4, Assault, Jack3d micro) in small doses. After about 2 years of experimenting I will continue the review with my short summary on PW use and will follow it up with the reason why C4 made the cut.

    PW recommendation:

    Take only when well rested
    Take on your 3rd or 4th day of lifting. It’s not necessary when you’ve had a day or more off.
    Take half of the recommended dosage to start. See if you see benefit.
    Take in 1 month cycles. If you scale down usage as much as I do 2 month cycles is fine.

    Don’t take daily
    Don’t take for cardio
    Don’t take for cardio
    Don’t take for cardio
    Under no circumstance should you take under cardio
    Don’t take if you’ve been lifting for a year or less – You have plenty more to learn before maximizing a product like this.
    Don’t take for more than 1-2 months in a row. Challenge your body to perform as well off PW as you do on PW. It’s tough but if it was easy you wouldn’t gain.

    Cellucor C4-

    Jack3d was killing people
    Assault was giving me lava diarrhea
    Jack3d micro was like dating the ugly sister and touting the family name

    C4 gave me a similar pump to that of Jack3d. I take 1/2 the recommended dosage for a pump up that equals about 2 cups of good coffee. I have a horrible case of gym sweats so I avoid multiple cups of coffee. I sweat when using C4 but not as much.

    Mixability – 5/5
    Taste – 5/5

    I hope that you found this review helpful. If not I will erase the entire thing take 2 scoops and try again in a direction geared more for motivation than anything else.

    PLEASE ask any questions that you have below. I had a ton of questions when first starting and still have plenty now. I’d be happy to share my opinions on things that I have read into or personally experienced.

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    • me2dumb4college
    • September 10, 2014
    Reply
    1 of 1 people found the following review helpful
    3.0 out of 5 stars
    Coming from Jack3d, October 22, 2013
    By 

    Verified Purchase(What’s this?)
    This review is from: Cellucor C4 Extreme Fruit Punch – 30 Servings (Health and Beauty)
    I’ve used several brands of pre-workout formulas, and most recently made the switch from Jack3d (since they changed the formula) to the C4. I read through the positive reviews and decided to give it a shot. I wasn’t expecting the same intensity as Jack3d, but C4 just hasn’t lived up to my expectations. I get more of a reaction from drinking 2/3 of a “spiked” soda, which has ~300 mg of caffiene. The C4 does sustain the energy longer, although lacking in intensity, which is great for longer endurance type of training, but I’m mostly a gym rat. I generally hit the gym after work, so I take C4 around 4:30 and the longer sustained energy sometimes makes it hard to sleep at night.

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