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Why diets fail; it’s not what you think. | Krzysztof Czaja | TEDxPeachtree


welcome we go on a diet count every

welcome we go on a diet count every calorie we eat and try to stay within

calorie we eat and try to stay within

calorie we eat and try to stay within the recommended caloric limit we lose a

the recommended caloric limit we lose a

the recommended caloric limit we lose a few pounds and after some time our

few pounds and after some time our

few pounds and after some time our weight is back again isn’t this a story

weight is back again isn’t this a story

weight is back again isn’t this a story of your life yeah two out of three

of your life yeah two out of three

of your life yeah two out of three Americans are either overweight or obese

Americans are either overweight or obese

Americans are either overweight or obese and obesity is a leading driver of many

and obesity is a leading driver of many

and obesity is a leading driver of many preventable diseases and health care

preventable diseases and health care

preventable diseases and health care costs currently in the United States

costs currently in the United States

costs currently in the United States estimates go to nearly 250 billion

estimates go to nearly 250 billion

estimates go to nearly 250 billion dollars per year and individual costs of

dollars per year and individual costs of

dollars per year and individual costs of obesity are also significant

obesity are also significant

obesity are also significant according to colors in calories out

according to colors in calories out

according to colors in calories out theory obesity is a simple matter of

theory obesity is a simple matter of

theory obesity is a simple matter of eating too many calories what’s wrong

eating too many calories what’s wrong

eating too many calories what’s wrong with it

with it

with it when looking to lose body weight many

when looking to lose body weight many

when looking to lose body weight many people cut on fat because it’s the most

people cut on fat because it’s the most

people cut on fat because it’s the most caloric component of our diet even

caloric component of our diet even

caloric component of our diet even though it’s true that weight gain is

though it’s true that weight gain is

though it’s true that weight gain is caused by caloric excess and weight loss

caused by caloric excess and weight loss

caused by caloric excess and weight loss is caused by caloric deficit this is

is caused by caloric deficit this is

is caused by caloric deficit this is still such a drastic oversimplification

still such a drastic oversimplification

still such a drastic oversimplification the fact is that different foods have

the fact is that different foods have

the fact is that different foods have different effect on our body and go

different effect on our body and go

different effect on our body and go through different metabolic pathways

through different metabolic pathways

through different metabolic pathways before turning into energy

before turning into energy

before turning into energy the real problem is focusing on caloric

the real problem is focusing on caloric

the real problem is focusing on caloric content of foods we eat and disregarding

content of foods we eat and disregarding

content of foods we eat and disregarding their metabolic effect therefore we

their metabolic effect therefore we

their metabolic effect therefore we shouldn’t automatically assume that food

shouldn’t automatically assume that food

shouldn’t automatically assume that food with low fat is better for you or will

with low fat is better for you or will

with low fat is better for you or will help you lose weight many low fat

help you lose weight many low fat

help you lose weight many low fat and fat-free foods can give you more

and fat-free foods can give you more

and fat-free foods can give you more than you bargained for why when fat is

than you bargained for why when fat is

than you bargained for why when fat is removed more sugar is added to make the

removed more sugar is added to make the

removed more sugar is added to make the food taste better and we enjoy our

food taste better and we enjoy our

food taste better and we enjoy our morning fat-free yogurt but when we do a

morning fat-free yogurt but when we do a

morning fat-free yogurt but when we do a little calculation we can see that only

little calculation we can see that only

little calculation we can see that only one serving of fat-free yogurt delivers

one serving of fat-free yogurt delivers

one serving of fat-free yogurt delivers more than 50% of daily recommended

more than 50% of daily recommended

more than 50% of daily recommended amount of added sugar at the beginning

amount of added sugar at the beginning

amount of added sugar at the beginning of our day we are already more than

of our day we are already more than

of our day we are already more than halfway through our daily limit for

halfway through our daily limit for

halfway through our daily limit for added sugar with just one cup of

added sugar with just one cup of

added sugar with just one cup of fat-free yogurt and this is just one

fat-free yogurt and this is just one

fat-free yogurt and this is just one example of fat-free foods seducing us

example of fat-free foods seducing us

example of fat-free foods seducing us during the day it is recommended to

during the day it is recommended to

during the day it is recommended to limit added sugar to 6 teaspoons for a

limit added sugar to 6 teaspoons for a

limit added sugar to 6 teaspoons for a woman and 9 teaspoons for a man per day

woman and 9 teaspoons for a man per day

woman and 9 teaspoons for a man per day but average American consumes 23

but average American consumes 23

but average American consumes 23 teaspoons per day and the recommended

teaspoons per day and the recommended

teaspoons per day and the recommended amount of added sugar is not even

amount of added sugar is not even

amount of added sugar is not even labeled in nutrition facts as a result

labeled in nutrition facts as a result

labeled in nutrition facts as a result we eat too much sugar three times too

we eat too much sugar three times too

we eat too much sugar three times too much my research team at the University

much my research team at the University

much my research team at the University of Georgia in Athens is focusing on a

of Georgia in Athens is focusing on a

of Georgia in Athens is focusing on a neural gut brain communication using rot

neural gut brain communication using rot

neural gut brain communication using rot as an animal model why rat because both

as an animal model why rat because both

as an animal model why rat because both rotten human have similar neural

rotten human have similar neural

rotten human have similar neural connections between the gut and the

connections between the gut and the

connections between the gut and the brain we are specifically interested in

brain we are specifically interested in

brain we are specifically interested in a vagus nerve because the vagus nerve is

a vagus nerve because the vagus nerve is

a vagus nerve because the vagus nerve is a two-way street between the gut and the

a two-way street between the gut and the

a two-way street between the gut and the brain signals running from the guard up

brain signals running from the guard up

brain signals running from the guard up the vagus nerve to the brain affect our

the vagus nerve to the brain affect our

the vagus nerve to the brain affect our perception of hunger and fullness

perception of hunger and fullness

perception of hunger and fullness signals running from the brain down the

signals running from the brain down the

signals running from the brain down the vagus to the gut affect digestion

vagus to the gut affect digestion

vagus to the gut affect digestion secretion of digestive enzymes and bowel

secretion of digestive enzymes and bowel

secretion of digestive enzymes and bowel movement

movement

movement therefore

therefore

therefore any interruption in avigal godwyn

any interruption in avigal godwyn

any interruption in avigal godwyn communication may lead to obesity

communication may lead to obesity

communication may lead to obesity recently God bacteria has added long

recently God bacteria has added long

recently God bacteria has added long overlooked component to the complex

overlooked component to the complex

overlooked component to the complex bi-directional signaling between the gut

bi-directional signaling between the gut

bi-directional signaling between the gut and the brain triggering a tremendous

and the brain triggering a tremendous

and the brain triggering a tremendous interest in the field of obesity

interest in the field of obesity

interest in the field of obesity research changes in a diet composition

research changes in a diet composition

research changes in a diet composition can rapidly trigger changes in a gut

can rapidly trigger changes in a gut

can rapidly trigger changes in a gut bacteria composition interestingly if we

bacteria composition interestingly if we

bacteria composition interestingly if we take god bacteria from obese animals and

take god bacteria from obese animals and

take god bacteria from obese animals and Transplant to germ-free animals with no

Transplant to germ-free animals with no

Transplant to germ-free animals with no doubt bacteria they become obese when we

doubt bacteria they become obese when we

doubt bacteria they become obese when we take out bacteria from lean animals and

take out bacteria from lean animals and

take out bacteria from lean animals and Transplant to germ-free animals they

Transplant to germ-free animals they

Transplant to germ-free animals they become lean this identifies gut bacteria

become lean this identifies gut bacteria

become lean this identifies gut bacteria as a potential driver of diet induced

as a potential driver of diet induced

as a potential driver of diet induced obesity in our recent project we

obesity in our recent project we

obesity in our recent project we investigated the effect of high-fat

investigated the effect of high-fat

investigated the effect of high-fat high-sugar and low fat high sugar diets

high-sugar and low fat high sugar diets

high-sugar and low fat high sugar diets on gut bacteria gut brain vagal

on gut bacteria gut brain vagal

on gut bacteria gut brain vagal communication and body fat accumulation

communication and body fat accumulation

communication and body fat accumulation our high-fat high-sugar diet

our high-fat high-sugar diet

our high-fat high-sugar diet imitates standard American or western

imitates standard American or western

imitates standard American or western diet while low fat high sugar diet

diet while low fat high sugar diet

diet while low fat high sugar diet mimics commonly consumed low fat

mimics commonly consumed low fat

mimics commonly consumed low fat products our results revealed that

products our results revealed that

products our results revealed that control rats consuming low fat low sugar

control rats consuming low fat low sugar

control rats consuming low fat low sugar diet didn’t gain significant amount of

diet didn’t gain significant amount of

diet didn’t gain significant amount of body fat over four weeks of the study as

body fat over four weeks of the study as

body fat over four weeks of the study as we expected rats consuming high fat high

we expected rats consuming high fat high

we expected rats consuming high fat high sugar diets gain significantly more body

sugar diets gain significantly more body

sugar diets gain significantly more body fat but surprisingly brats consuming low

fat but surprisingly brats consuming low

fat but surprisingly brats consuming low fat high sugar diet gains significantly

fat high sugar diet gains significantly

fat high sugar diet gains significantly more about different than control rats

more about different than control rats

more about different than control rats while consuming fewer color

additionally we found that rats

additionally we found that rats consuming high sugar diet needed

consuming high sugar diet needed

consuming high sugar diet needed significantly fewer calories to generate

significantly fewer calories to generate

significantly fewer calories to generate the same amount of body fat therefore

the same amount of body fat therefore

the same amount of body fat therefore you can see that color is in calories

you can see that color is in calories

you can see that color is in calories out theory is not working properly

focusing on the quantity and

focusing on the quantity and disregarding the quality of food we eat

disregarding the quality of food we eat

disregarding the quality of food we eat may be the main reason for obesity

may be the main reason for obesity

may be the main reason for obesity epidemic next we found that consumption

epidemic next we found that consumption

epidemic next we found that consumption of high sugar diets increase the

of high sugar diets increase the

of high sugar diets increase the population of entero toxic bacteria

population of entero toxic bacteria

population of entero toxic bacteria elevating levels of enterotoxin LPS and

elevating levels of enterotoxin LPS and

elevating levels of enterotoxin LPS and pro-inflammatory molecules our results

pro-inflammatory molecules our results

pro-inflammatory molecules our results revealed that this triggered gut

revealed that this triggered gut

revealed that this triggered gut inflammation increased gut permeability

inflammation increased gut permeability

inflammation increased gut permeability and fat accumulation in the liver all

and fat accumulation in the liver all

and fat accumulation in the liver all these diet induced changes may

these diet induced changes may

these diet induced changes may compromise gut function and lead to

compromise gut function and lead to

compromise gut function and lead to obesity in the last step of our study we

obesity in the last step of our study we

obesity in the last step of our study we found that rats consuming high sugar

found that rats consuming high sugar

found that rats consuming high sugar diets

diets

diets develop inflammation in the vagus nerve

develop inflammation in the vagus nerve

develop inflammation in the vagus nerve and brain centers responsible for food

and brain centers responsible for food

and brain centers responsible for food intake this altered vagal gut brain

intake this altered vagal gut brain

intake this altered vagal gut brain communication and was leading to

communication and was leading to

communication and was leading to increase body fat accumulation and

increase body fat accumulation and

increase body fat accumulation and eventual obesity so long story short we

eventual obesity so long story short we

eventual obesity so long story short we conclude that consumption of high sugar

conclude that consumption of high sugar

conclude that consumption of high sugar diets is increasing the population of

diets is increasing the population of

diets is increasing the population of pro-inflammatory bacteria in the gut

pro-inflammatory bacteria in the gut

pro-inflammatory bacteria in the gut gastrointestinal inflammation is

gastrointestinal inflammation is

gastrointestinal inflammation is triggering a cascade of events leading

triggering a cascade of events leading

triggering a cascade of events leading to inflammatory risk

to inflammatory risk

to inflammatory risk in avigal gut-brain communication and

in avigal gut-brain communication and

in avigal gut-brain communication and brain centers responsible for food

brain centers responsible for food

brain centers responsible for food intake and this is reflected by

intake and this is reflected by

intake and this is reflected by increased body fat accumulation and

increased body fat accumulation and

increased body fat accumulation and eventual obesity as you can see obvious

eventual obesity as you can see obvious

eventual obesity as you can see obvious are overweight people can just eat less

are overweight people can just eat less

are overweight people can just eat less and expect automatically to lose body

and expect automatically to lose body

and expect automatically to lose body fat eating too much sugar may be toxic

fat eating too much sugar may be toxic

fat eating too much sugar may be toxic to our body but many sugar defenders say

to our body but many sugar defenders say

to our body but many sugar defenders say that since year 2000 the sugar

that since year 2000 the sugar

that since year 2000 the sugar consumption is going down but obesity

consumption is going down but obesity

consumption is going down but obesity rates are still going up and they

rates are still going up and they

rates are still going up and they present the graph where these two trends

present the graph where these two trends

present the graph where these two trends are going in opposite directions as you

are going in opposite directions as you

are going in opposite directions as you can see it’s visual a convincing graph

can see it’s visual a convincing graph

can see it’s visual a convincing graph it let me wonder about the relevance of

it let me wonder about the relevance of

it let me wonder about the relevance of our results to obesity but many years

our results to obesity but many years

our results to obesity but many years ago I learned that if you want the truth

ago I learned that if you want the truth

ago I learned that if you want the truth then go to this source and I did I

then go to this source and I did I

then go to this source and I did I checked and in fact according to USDA

checked and in fact according to USDA

checked and in fact according to USDA data the total amount of added sugar

data the total amount of added sugar

data the total amount of added sugar consumption is declining since year 2000

consumption is declining since year 2000

consumption is declining since year 2000 but situation of obesity is looking

but situation of obesity is looking

but situation of obesity is looking slightly different according to National

slightly different according to National

slightly different according to National Center for Health Statistics the

Center for Health Statistics the

Center for Health Statistics the observed change in adult obesity between

observed change in adult obesity between

observed change in adult obesity between year 2011 and 14 was not statistically

year 2011 and 14 was not statistically

year 2011 and 14 was not statistically different

different

different additionally the obesity rate in

additionally the obesity rate in

additionally the obesity rate in children didn’t change since 2003 so you

children didn’t change since 2003 so you

children didn’t change since 2003 so you can see that obesity rates are slowing

can see that obesity rates are slowing

can see that obesity rates are slowing down since year 2000 as

down since year 2000 as

down since year 2000 as specially in children the population

specially in children the population

specially in children the population born after year 2000 and why is so

born after year 2000 and why is so

born after year 2000 and why is so important to look at the youth

important to look at the youth

important to look at the youth population because they were by average

population because they were by average

population because they were by average exposed to lower doses of added sugar in

exposed to lower doses of added sugar in

exposed to lower doses of added sugar in their diet and going back to findings

their diet and going back to findings

their diet and going back to findings from our laboratory they probably

from our laboratory they probably

from our laboratory they probably experience less damage to their liver

experience less damage to their liver

experience less damage to their liver less severe inflammation and their

less severe inflammation and their

less severe inflammation and their damage to vagal gut brain communication

damage to vagal gut brain communication

damage to vagal gut brain communication was not significant and strong enough to

was not significant and strong enough to

was not significant and strong enough to completely destroy neural mechanism of

completely destroy neural mechanism of

completely destroy neural mechanism of regulating energy intake and expenditure

regulating energy intake and expenditure

regulating energy intake and expenditure let’s look at the numbers this 80%

let’s look at the numbers this 80%

let’s look at the numbers this 80% reduction slowed down the obesity rate

reduction slowed down the obesity rate

reduction slowed down the obesity rate by an impressive 30% in adults and 45%

by an impressive 30% in adults and 45%

by an impressive 30% in adults and 45% in children so why is so difficult to

in children so why is so difficult to

in children so why is so difficult to lose body fat and stay lean because our

lose body fat and stay lean because our

lose body fat and stay lean because our neural mechanism regulating energy

neural mechanism regulating energy

neural mechanism regulating energy intake and expenditure is damaged by

intake and expenditure is damaged by

intake and expenditure is damaged by eating too much sugar while sugar is

eating too much sugar while sugar is

eating too much sugar while sugar is necessary for healthy life and the

necessary for healthy life and the

necessary for healthy life and the consumption trend is going in the right

consumption trend is going in the right

consumption trend is going in the right direction we still consume more than 300

direction we still consume more than 300

direction we still consume more than 300 percent of daily recommended amount of

percent of daily recommended amount of

percent of daily recommended amount of added sugar instead of counting every

added sugar instead of counting every

added sugar instead of counting every calorie you eat count every gram of

calorie you eat count every gram of

calorie you eat count every gram of added sugar because according to the all

added sugar because according to the all

added sugar because according to the all toxicology Maxim the dose makes the

toxicology Maxim the dose makes the

toxicology Maxim the dose makes the poison thank you very much

poison thank you very much

poison thank you very much [Applause]

[Applause]

[Applause] [Music]

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