Obesity: Ten Things You Thought You Knew

[obits3]

On BMI and races. Asians tend less bone weight and blacks tend to have more. That is the most logical explanation for 18:20

[fenderkid6]

I've somewhat simplified the 1.26 hrs of footage.

Get some fucking exercise.

Get some fucking exercise.

Get some fucking exercise.

[dxvxvx]

@fenderkid6 lol! I know what you mean. I found this guy really difficult to listen to, surely as an academic his job is to simplify periodically, he kept talking about conflict in the data.

[MichaelnChristine]

@fenderkid6 Doesn't work. Go look at the numbers of calories burned by running once you strip away the included BMR. That treadmill number is not ADDITIONAL Calories, it's total. At 400lbs I walked 65 miles a week, with a heavy backpack and worked out with weights 2x a week. I got strong, but I didn't lose a single pound on a hypocaloric diet. High insulin is high insulin. Do some research and stop judging.

[mrballcb]

@ccjuju, he specifically said in the presentation that BMI is useful only if the excess weight is fat. He then said this does not apply if the excess weight is muscle or water.

[ccjuju]

I can't understand how anyone can take a professor seriously who still uses BMI as a measurement of obesity when it completely disregards anyone who has ever lifted a weight in their life. That little nugget of ignorance alone is enough to make me call their competence into question.

[MichaelnChristine]

@ccjuju Yes because a video about obesity must relate directly to a body-builders. Be real....

[flowewritharoma]

thanks for sharing this awesome video.

[danhantheman]

it's alllllllll about Paleo Diet. if you're obese, follow a strict paleo diet as outlined by Mark Sisson's Primal Blueprint or Robb Wolf's Paleo Solution. after 6months, you'll change your life. vegans and those of you who are thin, stfu, i don't want your opinion. you don't need a Paleo diet because you're thin eating carbs

[MichaelnChristine]

@danhantheman Paleo is a free -eating system and doesn't say it has to be "Low-Carb' (though Sisson's Primal prefers it). Katavans eat "Paleo" but aren't low carb.

[danhantheman]

@MichaelnChristine True but if you're obese, obv dont do the Kitavan diet of 70% carbs. lol

Also i see you talk about high insulin. insulin is not the real problem (thought it damn sure seems like it). alot of guys like Chris Masterjohn and other paleo researchers are debunking insulin as the culprit. it's starting to shift onto high carbs/sugars (fructose)/PUFA's causing inflammation and LEPTIN resistance. My bible is Mastering Leptin by Byron Richards, a must read u won't regret.

[Satarack]

@danhantheman I may be wrong, but isn't insulin itself a cause of leptin resistance?  I wouldn't say then that insulin has been "debunked." What I understand is that insulin triggers the same satiation signals as leptin, although slightly differently. The brain of a person with chronically high insulin levels will learn to make this elevated signal it's new reference point; but this in turn causes the leptin signal to appear smaller by contrast to what it actually is.

[Satarack]

@danhantheman That said, it appears that fructose and other chemicals may be the ultimate cause for why so many people now have higher insulin levels and liver problems, and thus the cause of leptin resistance in most of the overweight population. Insulin may not be the final cause; but it certainly doesn't seem irrelevant or "debunked." It has a role in this, certainly for fructose if not other problem chemicals as well.

[danhantheman]

@Satarack There are definite many variables that interplay between leptin, insulin and our diet/exercise. But a simplified overview is this: insulin is what drives food in the short-term into muscle/fat cells. if leptin works correctly, the body will decrease appetite/burn off stored fat, it regulates the long-term fat cell status. however, if leptin does not work properly, fat builds up in the cell, automatically leading to insulin resistance as a defense mech to stop more input of fuel

[Satarack]

@danhantheman Certainly anyone that says insulin is always the culprit is wrong, and perhaps "debunked." But I don't think anyone in the scientific community actually advocates that. Dr. Lustig, who advocates fructose reduction, will point to leptin resistance caused by insulin; but he also has performed research on children with systemic leptin resistance from chemotherapy treatments of brain tumors, which has nothing to do with insulin. So I don't think he's saying insulin is the only cause.

[Satarack]

@danhantheman So I think everyone would agree that a doctor should diagnosis each individual to know what the cause is for them; but what they are advocating is for general advice to the population; effectively a question of public policy. So going again to Dr. Lustig; he's advocating the reduction of fructose consumption in the general population. There will still be those with other causes for obesity, but he's advocating that this is the primary cause of the current obesity epidemic.

[jackinla8]

He doesn't look very healthy either. Maybe the professor should practice what he preaches, adds credibility, you know.

[arifonline007]

Wow...take a look at 42:00. He completely skips over the important point! "Take home message" is not what your adherence was to any diet, its the last point thats right there on the slide:

"CRP and insulin reductions associated with weight loss, but not diet."

which diet is good at crp and inslulin reduction? low carb/low sugar diet ofcourse. So doesnt it imply that low carb would be superior to low fat kind? Don't understand how he skipped the most important point!

[Queeranus]

I don't like this video. The information is WAY too non-specific, just like BMI. There's nothing to account for fat PERCENT. Not to mention, how do we know that the 1.00 associated with a normal weight isn't due to people being "normal" weight due to smoking. Also, how do we know a lot of "normal" weight people have little muscle a lot of fat? Muscle weighs more than fat, such a thing is entirely possible.

[KillaHaakon]

@Queeranus

He pointed out that there was a huge correlation between the bacon/pound ratio and your BMI nearly at the beginning, so while it is not accurate for everyone, it is accurate for most people.

[evilzzzable]

He is wrong at @46min that Low carb is "low calorie in disguise". That is totally wrong and is a criticism that Atkins has answered many times. It is perfectly possible to lose weight on low carb, high calorie (> 3000 cal/day).

[CivitasUltraAporia]

@evilzzzable No he isn't wrong. People often eat less on an Atkins type diet due to high protein intake, and don't be fooled into thinking that eat more calories than you need and expect to lose weight simply because you avoid a particular macronutrient.

[evilzzzable]

@CivitasUltraAporia No you moron, he IS wrong. Atkins answered this many times like I said, and it was not correlated that people who ate less calorific intake on low carb were the biggest weight losers. Many ate high carbs and lost as much weight. You could drink a bottle of vegetable oil a day and still lose a lot of weight if you restricted your carb intake.

[evilzzzable]

@CivitasUltraAporia No you moron, he IS wrong. Like I said Atkins refuted this argument so many times he got sick to the back teeth of it, and it's only uneducated idiots who still believe that the body burns calories like a calorimeter test who adhere to this. You could drink a bottle of vegetable oil a day and still lose weight if you restrict your carb intake.

[CivitasUltraAporia]

@evilzzzable Give me one instance in ANY scientific literature where that has been shown. The VASTLY overwhelming consensus in the current literature says otherwise.

[flowewritharoma]

novel infomative lecture we would attend.

[Beast9156]

BMI is bull..

[1955JAFO]

I ate low carb...lost a lot of weight - felt great

went back to higher carb...gained the weight and felt bloated all the time.

great video

[jackinla8]

@1955JAFO I agree, carbs - even the healthy ones - bloat me.

[ALucas73]

I've seen TV show where they put a skinny chick in one of those measuring pods that measure actual bodyfat and found that, although being skinny, she was 50% body fat. The chick was shocked to say the least. Always check the arms. Skinny arms with no muscle can be indicative of a lack of muscle all over.

[7466309change]

one forth steak and a half cup carrots is sufficant callories if you walk a half hour you will loses weight.But if your on yu tube like me you will gain five pounds a week.

[flexwheelR]

would u define a 250 lb bodybuilder of pure muscle overweight?

[campbpar]

@flexwheelR Fuck ya dude. Don't forget that bodybuilders are SACRIFICING their bodies to look pumped. Ideal, lean, functional muscle keeps most athletes well under 200 lbs. Bodybuilders are hardworking athletes but that's a different ball game.

[AppleSouffle]

Shut up, campbpar. People who swear have nothing intelligent to say.

Some people, including you, just don't have the social skills to be part of polite, adult society.

[campbpar]

@AppleSouffle Watch your mouth, assbag.

[AppleSouffle]

FexwheelR, there's no such person as a bodybuilder of pure muscle.

Everyone has body fat. A bodybuilder may have very low body fat, but with zero body fat, he would be dead.

And you can't even spell.

[lazur1]

"(BMI) correlates...w/total bodyfat." Then Dr. Baron lists 2 exceptions. In other words, BMI -doesn't- correlate w/total bodyfat in -many- cases. Not literally an exception, but a common, relevant problem: A woman w/high BMI loses weight w/ calorie reduction, but makes the same poor food choices, & doesn't exercise. Her weight goes down, her BMi goes down, but her bodyfat % , the -real- health issue, is the same, or -up-, because she's lost at least as much muscle as fat. BMI: seriously flawed.

[Schizima]

I didn't know that cigarettes were the reason for higher mortality in thin people. Good lecture.

[sal7t5]

Are there any studies on the health of very muscular men (body builders) and there obesity?

[wander099]

@sal7t5, while the BMI will say that body builders are obese, they really aren't. Of course that doesn't mean they are healthy since some will take drugs and supplements that are dangerous, dehydrate themselves to improve muscle definition etc. But their body fat percentage would be quite low I would think, so no threat there.

[noobler9]

overall a very helpful video for me, thanks to this video I've been able to take a few measures to limit my sugar intake, do a bit more exercise and get slightly more healthy food with better amounts of nutrients

[stjeepan]

Isnt the location of fat more important then total fat. Im not a big fan of BMI but its a starting point for my appraisals.

BMI should be used together with WC...(WC = waist circumfrence)

[alphacause]

I don't understand why the BMI is relied on so heavily. One flaw that I find with it is that BMI charts don't distinguish between gender. To me it is obvious that if you weigh a male and a female, both having the same height, in general the male should weigh SIGNIFICANTLY more just because of average disparities in muscle mass and bone density. So, that would mean a woman, who is 5'5" should weigh significantly less than a man of the same height. Can someone tell me why I am wrong?

[vcool]

All diets and calories are not the same. A calorie from a high-glycemic source as HFCS is much worse than a calorie from complex carbs. Watch "Sugar: The Bitter Truth".

[fundip43]

@vcool This lecture is so biggg now ha that all i see come up when looking into sugar . . . .but thats because its real that good

[Beast9156]

@vcool Everyone needs to watch Sugar: the bitter truth.

[Apage43]

@vcool It's also worth pointing out that sweeteners that are extremely high in fructose (like agave nectar), are also still very bad despite the fact that they have an -extremely low- glycemic index because fructose doesn't trigger an insulin response /directly/

[jalind1]

@vcool For other health issues, maybe. However, for obesity, a calorie is a calorie. Empty calories are the worst, but non-empty calories, if they're excess, are bad too.

[vcool]

@jalind1 No, I'm afraid you don't know what you're talking about. Please search for and read the NYT article titled "Still Counting Calories? Your Weight-Loss Plan May Be Outdated".

[jalind1]

@vcool The danger is to focus on a very narrow aspect of a much more holistic and complex situation. However, in the broad scheme of things, there are only a few basic major influences on obesity. They are caloric intake, excretion and metabolism. Basically, this comes down to the food energy eaten, the food energy assimilated (i.e., not passed) and the food energy metabolised or used to build non-fat tissue (i.e., not stored as fat). The rest becomes fat.

[vcool]

@jalind1 Thanks - I agree there are lots of dangers. There are a few more factors that matter. These include the presence of probiotics, and the percent of fat that gets absorbed -- this may possibly be affected by say dietary fiber and calcium. Also the feeling of satiety induced by certain foods such as proteins and fats matters indirectly. In practice one could eat vegetables, fruits, fiber-rich whole wheat bread, nuts, and yogurt all day without getting fat.

[jalind1]

@vcool The body is an amazing machine and it is astonishing at how fast it converts complex carbohydrates into simple ones. Replacing refined sucrose and fructose with potatoes, rice and corn is certainly a much better nutrition choice, but only for ensuring the carb intake includes other nutrition such as vitamins, minerals and fiber. However, the potatoes, rice and corn become glucose in the body almost as fast as simple carbs. Just ask any diabetic. More than the body uses becomes fat.

[MichaelnChristine]

@vcool Which doesn't address the fact that Wheat seems to be linked to all sorts of autoimmune disorders.  See: Wheat Belly.

[jacopman]

Add the waist to hip ratio measurements to the BMI and you will have a better indication of those with a higher BMI due to more muscle mass and a lower body fat percentage that the BMI does not account for.

[1888junkteam]

excellent worker!

[emilyhf3]

It wasn't explained what exactly happens when people die from these surgical procedures.

[mfwg74]

how can he really have so many malformatted slides? he obviously never heard of tabs. *tsss*

[santaana36]

BMI = body density. People who are fit have heavier bones and more heavy muscle compared to light fat. Perhaps the mortality dip in the above normal category is because of this and not necessarily because people with a few extra pounds are healthier?

[ovenroastedDC]

No. BMI = Body Mass Index.

The BMI system is fundamentally flawed. Take this for example: two people of identical height and weight, Bob and Joe.

Bob has 40% bodyfat while Joe has 8%. Who is going to be higher on the BMI scale? Joe is going to be higher on the BMI scale, EVEN THOUGH HE IS HEALTHIER, because muscle weighs more than fat.

The BMI system is flawed because of this.

[santaana36]

Exactly. That was my point. Joe is healthier but has a higher BMI because of his body density. In the video there is a dip in mortality rates for people with slightly higher BMI. The studies were done using the BMI as a reference (which is understood to have limitations as a measurement of health. That was my question to the speaker. If the dip in the mortality rate for slightly higher BMI is indicative of the more fit person (more muscle less fat) or another phenomenon.

[XPronger]

No, when they have identical height and weight, their BMI must be by definiton identical as well.

It is true though that BMI and muscular people doesn't work well.

[ovenroastedDC]

Haha whoops, I didn't mean to say height AND weight.

I combined my points -- if the fat one and muscular one were the same weight, they would be the same BMI, which is inaccurate because the muscular one would be healthier.

(o:

[XPronger]

Hehe I knew you meant that, just messing with you. ;-)

[lazur1]

I'm sorry, too, I just got to your more recent post.

[VelikiBedak]

@ovenroastedDC It is obvious, BMI is used just as approximation, not as exact indicator of somebodies weight status. In order to see what is somebodies weight status you have to know as you stated somebodies body fat profile, even the body frame is important, and so on.....

[lazur1]

????If Joe and Bob weigh the SAME at the SAME height, they have the SAME BMI: Those are the only two numbers used in the calculation. But no MD worth a hoot uses BMi without also measuring the waistline, too, and muscle being more denser than fat will give Joe a smaller waist, thus lower Joe's complete score.

[leglesss2012]

Muscle DOES NOT weigh more than fat !! One pound of muscle weighs THE SAME as one pound of fat.

[PumpkinDog33]

lol @ your ignorance and/or trolling

[Huinipachutli]

@leglesss2012 : your comment really radiates intellect and extended education.

However, one volume unit of muscle weighs MORE than the same volume unit of fat.

[Lagartofero]

Of course, but i think they're referring to weight per unit of volume...

[noobler9]

@ovenroastedDC

they're identical height, and weight

joe won't be higher, he will be equal in the BMI

however he would *deserve* to be lower on an accurate health indication system, that's your point, right?