What Losing Weight Does To Your Body And Brain | The Human Body

Special thanks to John Gunstad, professor with the Department of Psychological Sciences at Kent State University, for speaking with us about his cutting-edge research on how losing weight affects brain function.

Following is the transcript of the video:

Here’s what losing weight does to your body and brain.

During the first week, you may find it easy to lose weight by simply switching to a healthier diet. But as your metabolism adjusts, you won’t burn as many calories as you used to.

So losing additional weight will become harder.

Making matters worse, as the fat melts away, you’ll start to experience an increase in appetite. After a meal, fat cells release a hormone called leptin into the bloodstream.

This surge in leptin levels signals to your brain you’re full and should stop eating. But with less overall fat, people who lose weight show a measurable dip in leptin.

Brain scans of obese patients who had lost 10% of their body weight revealed that less leptin leads to increased activity in regions of the brain that control our desire to eat.

The result isn’t just an increased appetite but an even stronger urge to eat fatty, high-calorie foods, because your brain is trying to restore the body’s leptin levels to normal.

However, fighting that early impulse to gorge on pizza and donuts is worth it in the long run.

Besides the decreased risk of heart disease, hypertension, high cholesterol and type 2 diabetes, scientists studying overweight people discovered that losing just one pound of body weight reduces four pounds of pressure on knee joints.

Losing excess weight also reduces strain on the blood vessels, increases blood flow to the brain, and boosts overall brain function.

Several studies have shown that people who underwent weight-loss surgery saw an improvement in memory, concentration, and problem-solving skills in as soon as three months.

Plus, brain scans indicate that people who lost weight and kept it off for nine months reacted differently when shown images of high-calorie foods than before they lost the weight.

The brain regions that process reward, motivation, and taste didn’t react as strongly, whereas the areas that promote overall self-control had a boost in activity.

So fighting those cravings early on might make them easier to control later. Turns out — like anything else — losing weight can get easier with practice.


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What Losing Weight Does To Your Body And Brain | The Human Body


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  1. I still have the cravings but just use my head more m

  2. @Tom 4444 the little head from the south also helps you burn calories

  3. Absolute truth! I lost 50

  4. @Anthony Losego Huh? I’m at 17% bodyfat with visible abs right now eating 3-5 times a day. I’m good. Idk what I said there to get your reply

  5. oh boy do I understand what you mean. I had to take meds that are known to cause liver inflammation, I’m off of those meds for almost two years but my liver is still extremely sensitive.

  6. I lost 35 pounds in a year or so an its not that u get colder say u wear shirts an t-shirts u can become semi immune to weather conditions year round even at negative temperatures

  7. U are using pound for standard weight not kg😅🇮🇳

  8. so edward cullen wasn’t a vampire, he was just thinner

  9. Right on man ! Way to go !

  10. Little improvements, every day, add up. Just keep on keeping on !

  11. Cutting out sugar is step one. No more soda, sugar in coffee, deserts every day… then from there you eat less… preferably less carbs… couple these with weight training, good sleep and good hydration and your body will adjust and start shedding the weight.

  12. Weight loss is about having something else to do.

  13. @barryb this is wrong, the body compensates.

    It’s about timing and the type of food.
    Carbs confuse salt signal.
    Carbs cause cravings
    Put the body into storage mode
    Falsify muscle gains ie mass does not equate to strength.
    Insulin resistance
    Don’t eat carbs unless your breaking a fast or 1/w cheat mealing.
    Fast and shrink eating window
    Don’t eat after 6
    Exercise hitt
    Sleep well

    After you gain brown fat and are reasonably balance muscle to brown fat the body will compensate to what ever your hunger is.

    Low glycemic and high thermogenic foods.

  14. Hahahaha 😂😂

  15. how about now?

  16. I lost 60 lbs and idk, I think the body can still adjust to cold temperatures just fine even if it takes some extra immersion to get used to it

  17. @meazy451 I can’t believe how far down I had to scroll For the first black joke/comment

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