Study: Black Women Lose Less Weight Than White Women on Same Diet

Medicine Plus, December 19, 2013

Black women will lose less weight than white women even if they follow the exact same exercise and diet regimen, researchers report.

The reason behind this finding is that black women’s metabolisms run more slowly, which decreases their daily energy burn, said study author James DeLany, an associate professor in the division of endocrinology and metabolism at the University of Pittsburgh School of Medicine.

“African-American women have a lower energy expenditure. They’re going to have to eat fewer calories than they would if they were Caucasian, and/or increase their physical activity more,” said DeLany. His report is published in the Dec. 20 issue of the International Journal of Obesity.

DeLany and his colleagues reached this conclusion during a weight-loss study involving severely obese white and black women.


The research included 66 white and 69 black women, who were placed on the same calorie-restricted diet of an average of 1,800 calories a day for six months. They also were assigned the same exercise schedule.

The black women lost about 8 pounds less, on average, than the white women, the researchers found.

The explanation can’t be that black women didn’t adhere to the diet and exercise plan, DeLany said. The researchers closely tracked the calories each woman ate and the calories they burned through exercise, and found that black and white women stuck to the program equally.


That leaves variations in biology and metabolism to explain the difference in weight-loss success, the study authors said.


The difference in weight-loss success between black and white women has been known for some time, said Dr. Mitch Roslin, chief of bariatric surgery at Lenox Hill Hospital in New York City.

“There are racial and genetic differences in obesity,” Roslin said. “These things are real.”

“However, this study advances our understanding by ruling out other explanations,” Roslin said. “It’s not just related to socioeconomic class or access to care or environmental situations.”

One reason for the difference might be that European foods prevail in America, and form the basis of the modern diet, Roslin said. These foods might not burn as efficiently in the descendants of people from Africa, Asia and other parts of the world.

“People of Western European or Eastern European descent have evolved greater mechanisms to withstand the pressures of the modern diet,” Roslin said. He said studies have found that Asians subjected to a Western diet are more likely to develop metabolic syndrome and diabetes at a much lower body-mass index (BMI) than whites. {snip}


DeLany said it’s not clear whether these findings apply to black men, since much less data is available for them. But in a diabetes intervention trial, he said, black men lost about as much weight as white men following the same diet and exercise plan.

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  • Keep Honkin, I’m Reloading

    The dominant, lay-about gene.

    • John Smith

      I call ” B***S*** “.

      I mean, race is just a social construct, right?

      • Tracy Fox


        ☵☵☵ ☵☵☵ ☵☵☵

        • Whitetrashgang

          Running a escort sevice on the computure is a good idea.

        • ShermanTMcCoy

          Moderator, time to wakey, wakey, and ban this “poster.”

  • Manaphy

    But, But, But,…..
    The people who’s names end with “-stein” and “-berg” told me that all races are equal.

    • Rhialto

      Liberals acknowledge genetic physical differences between races (and genders). What the Liberals claim is that there is no genetic mental differences.

      • Ella

        Your physical functioning does affect your mental capacities. Just study disease, nutrition and ageing.

      • So CAL Snowman

        So basically gene expression and differences in allele frequency affect ONLY our physical appearance but have no impact on our cognitive or intellectual capabilities. Nice, liberals are certifiably insane.

        • RyanP

          Yep. One particular organ(the brain) in one particular species(human) has been exempted from the laws of natural selection. That is a leap of faith that is on par with any radical religious belief.

        • Strike_Team

          And here I was believing that the brain was something physical, like skin color, height, hair color…

      • RyanP

        Don’t be so sure. They will acknowledge things like skin color because they really have to choice. But I have had liberals argue with me that west african blacks have no innate advantage in short distance running. They claim all kinds of cultural reasons why blacks have gravitated toward sprinting. It is really quite amazing what they will deny.

  • bigone4u

    Let em stay fat and ugly. They die younger that way. They have no self control anyway, so advising them to eat less isn’t going to work.

    • ShermanTMcCoy

      They just cost us so damned much money on their way out.

  • Puggg

    The problem is that the diets aren’t the same. The black women like snack food, junk food and fast food. And that’s why some of them are so big that you’ve gotta be scared to be close to them in fear of Newton’s laws taking effect and you going into orbit around them.

    • Non Humans

      Black Hole?

  • Erasmus

    You mean blacks and whites are biologically different? Of course, but the lefties can accept that we look different and have different metabolisms, but they can never accept that because of biology, people of different races don’t have the same mental wherewithal.

  • Luca

    More than likely they are genetically predisposed to retain body fat for those long treks through the Kalahari. They must also remain fit for the fall migration to find water and to find beetle larvae as well. The more body fat they can retain the more appealing they are to the males of that species.

    • Whitetrashgang

      Both maternal races are fat.Maybe something to do with being the father and the mother and the only thing a child can depend on.

  • Ella

    “There are racial and genetic differences in obesity,” Roslin said. “These things are real.” So now race exists when it comes to large, fat Black women at a fried chicken joint.

  • Max Krakah

    ….”They also were assigned the same exercise schedule”…… Does anyone really believe they adhered to that schedule the way the white women did? I sounds like there was no monitoring at all of activity level, they were just “assigned” an exercise schedule. Im sure all of the black women lied as well and said they did the exercises. Anyone who has ever been to a health club knows that the rarest sight on one of those places is a black female, and even rarer still is a black female doing exercise. Demographics of the local of the health club play no part in this, black females are absent.

  • Katherine McChesney

    Somebody cheated.

    • Max Krakah

      My thoughts too.

  • shawnmer

    Can someone explain to a non-science fellow like myself why black males are generally superior athletes to whites – and usually have the lower body fat and greater muscle mass that goes with that – while black females would lag white females on this metric?

    • Whitetrashgang

      Better short distant runners and jumpers, whites are better at strength, and skill. Black woman don’t lag behind they mostly don’t try because of nappy hair or something.

    • M.

      Black males are better at bursts of strength; whites at resistance.
      But yes, black males do tend to have lower body fat, and can develop muscle mass quicker and more easily than whites. But the thing is that black females, like most blacks, have a poor sense of discipline, so they have a harder time following diets and exercising regularly.

    • 1stworlder

      Look at the Olympics short distance runs are dominated by blacks but upper body strength, coordination, and swimming events have none of them

  • John R

    Mytablismz? Huh, I iz jus gonna shuffle ‘long nowz…….(Yeah, lazy, slow, blacks. They only move fast when committing crime.)

  • So CAL Snowman

    Obviously dieting is racist.

    • ms_anthro

      The obvious solution to this problem is to send them back to their own continent, where they will be free from the pressures of the modern diet.

  • Magician

    And apparently the fat the black women’s metabolism cannot burn, gets to stay in their breasts, lips and buttocks. Obese white women, who are in relationships with black men, state that black men actually prefer obese white women to skinny white women because they look more close to their own black women with larger buttocks

    • RyanP

      The bar scene in my city has confirmed this for me frequently. 🙂

  • IstvanIN

    The black women I work with eat all day. Tons of junk all day long. And are frequently grotesquely obese.

  • The explanation can’t be that black women didn’t adhere to the diet and exercise plan, DeLany said.

    No, that can not be the explanation.

    None of them stopped for Chill Cheese Fritos or Flamin Hot Cheetos on the way home. And none of them surely licked the dust and grease off their fingers.

    They can’t control all the variables, so they just nod to black.

    • Nathanwartooth

      Same exact thoughts here.

      Were they watching them 24/7? No? Then some of them cheated.

      You would need an insanely controlled environment to say for sure. I believe the studies findings are in the ballpark though. Black metabolism being slower just makes way too much sense. They never built civilization so they needed to conserve energy inbetween food sources.

  • dd121

    That might be a useful gene if you’re about to go on a starvation diet in sub saharan Africa.

  • Sick of it

    They again try to separate the Goths into Western and Eastern branches. I probably have more in common with the average Eastern European than the average American, who seem to become more insane with each passing year.

  • odious liberal

    Another excuse, the fun never stops.

  • Alexandra1973

    Sitting around watching the idiot box doesn’t help matters.

    • dd121

      That at least might help them stay calm.

      • Alexandra1973

        Until they see one of those race-hustlers on TV and get all agitated.

  • bubo

    Two things black women don’t do. Exercise and get married.

    • ShermanTMcCoy

      Unfortunately, there is a third thing they do all too well and shouldn’t.


  • Spartacus

    Proffessor Shlomo told me we’re all the same, so it’s obvious that food is a White Supremacist concept, and I strongly suggest all blacks boycott it .

  • Brian

    Fat is yet another social construct, apparently.

  • Bossman

    I read somewhere that Blacks (at least black males) have higher basal metabolism; that is why they can run faster. They can can convert sugars and fats into heat energy faster than whites. Most black males don’t like skinny women so that is one variable that should be taken into account.

  • Xerxes22

    Mr. DeLany and the rest know not to violate the Liberal cardinal rule about Blacks. They are not responsible for their actions. Any thing negative about Blacks is caused by ouside forces that Blacks have no control over.

  • ben no

    This one is almost pointless as an argument. It’s weak. The truth is that if you didn’t get so overweight in the first place, then you wouldn’t have the worry and trouble of losing it!

  • 1stworlder

    Nerve tissue needs 20x the amount of energy to maintain as muscle

  • 1stworlder

    Mike Vick wasn’t even smart enough to know dog fighting was illegal.