Richard Johnson - The Origins of Obesity and the Fattening of
Transcription
Richard Johnson - The Origins of Obesity and the Fattening of
The Origins of Obesity and the Fattening of Man (Science Talk, 50 min) Richard J Johnson, MD, University of Colorado Dr Johnson has a laybook (Fat Switch, mercola.com) and patents and patent applications related to this work. He also has shares with XORT therapeutics. Obesity and Diabetes: The Twin Epidemics One in three adults are obese One in 30 adults are obese One in nine adults are diabetic One in 50,000 adults are diabetic Johnson et al Am J Clin Nutr 2007 Obesity is Affecting our Children Children in the USA % Obesity First graders in Chile Nearly one in five first graders are obese One in six children are obese Source: Albala, 2001 Obesity has Partners: Diabetes, High Blood Pressure and Heart Disease The Metabolic Syndrome •Abdominal obesity •Elevated Fasting glucose (insulin resistance) •Elevated triglycerides •Low HDL cholesterol •Elevated blood pressure Diabetes High Blood Pressure Fatty Liver Cirrhosis Stroke and Heart Disease Chronic Kidney Disease Sugar Intake Linked to Diabetes Diabetes increased in New York City from 3 cases/100,000 in 1880 to 20 cases per 100,000 in 1920 Risk Factors Wealthy Over age 45 Sedentary Caucasian Merchants in the Food Industry Haven Emerson (1874-1957) Sugar consumption New York City Health Commissioner Arch Int Med 1924; 34:585-630 Sugar Intake and Diabetes Sugar consumption in New York city (Emerson, 1924) Yemenites in Israel (Cohen, 1961) 20% of diet was sugar vs 0% in Yemen Sugar consumption in Manila (Concepcion 1922) Ceylon and Egypt (1907) Wealthy Hindu in Bengal (Charles 1907) Natal Indians of S Africa (Campbell 1963) 77 lbs/yr intake vs 12 lbs/yr in India ‘Overnutrition’ and Lack of Exercise Is to Blame Too Many Calories Too little energy used Cars, TV, Internet, Elevators Obesity: Is it from Bad Habits? Appetite is Regulated: Leptin, the appetite hormone A Mouse Lacking LEPTIN weighs more than two control mice Many Obese People appear to become Resistant to Leptin Friedman Nature 1994; 372:425 Increased Food Intake due to Food Addiction: Simulation of Dopamine in the Brain Similarities between Obesity AND Addiction Lean Dopamine creates a pleasure response Control Obese Abuser Dopamine D2 receptor imaging Gaining Weight is an Active Process We eat large portions since we cannot control our appetite We produce less energy since we have a defect burning Fat Leptin Resistance Dopamine Pleasure Response Reduced ATP Biology is Driving Culture, not Culture Driving Biology BUT WHAT IS ACTIVATING THIS PROCESS IN HUMANS? Revisiting the Role of Sugar and its Partner, Fructose •Sugar (sucrose): fructose/glucose •High fructose corn syrup (HFCS)fructose/glucose •Fructose is in honey and fruit Soft Drinks are the Major Source: •One third of sugar intake is from soft drinks. Role of Fructose in Obesity * Control Mouse Fructose-fed Mouse Ishimoto T, PNAS 2012; 109:4320-5 Fructose stimulates Weight Gain Am J Physiol Regul Integr Comp Physiol 2008;295:R1370-5; Eur J Clin Nutr 2012;66:201-8 Fructose Stimulates Fat Production and Insulin Resistance Rats were fed the same number of calories for 5 months Sirirat Reungjui et al JASN 2007; 18:2624 High Sugar Diets Make the Liver Fatty Despite Caloric Restriction Oil Red O Stain for Fat Starch Fed Rat Sugar Fed Rat Sprague Dawley rats fed sucrose or starch diet for 4 months at 90% of normal intake Roncal -Jimenez et al Metabolism 2011; 60: 1259-1270 Fructose Causes Metabolic Syndrome in Animals Johnson et al, End Rev 2009;30:96-116 The Stanhope Study: Fructose Increases Fat Overweight Adults were given 25% of calories as either glucose or fructose for 10 weeks Total Subcut Visceral Total Subcut Visceral Glucose Fructose Stanhope et al, J Clin Invest 2009; 119: 1322-1334 Effect of Fructose (200 g/d) for 2 weeks on Metabolic syndrome in Men: Menorca Study Metabolic Syndrome (NCEP-ATPIII)(%) Triglycerides HDL Cholesterol Insulin resistance (HOMA) Weight (kg) BMI (kg/m2) 24 hr Systolic BP (mm Hg) 24 hr Diastolic BP (mm Hg) Baseline 19% Change 44% 136 ± 15 46.5 ± 1.5 1.7 ± 0.2 84.3 ± 2.3 29.0 ± 0.6 126±2 75 ± 2 55±20 -2.5 ± 0.7 0.57 ± 0.16 0.6 ± 0.2 0.2 ± 0.1 7±2 5 ±3 P Value <0.001 <0.001 <0.005 <0.003 <0.003 <0.001 <0.001 Perez-Pozo et al Int J Obes 2010 Fructose can be Produced from Carbs (Glucose) Glucose Polylol Pathway Fructose Rice can be converted to Sugar in the Body Lanaspa, Ishimoto et al, Nature Comm 2013 High Glucose Diet Stimulates Fructose Production in the Liver Fructose Level in the Liver Normal diet Glucose-rich diet Lanaspa and Ishimoto, Nature Com, 2013 Carbohydrates cause Fatty Liver and PreDiabetes from Fructose 3000 Insulin ### Levels### 3000 Normal Mouse Fed Glucose (Carbs) Mouse Fed Glucose that cannot metabolize Fructose 2000 1000 0 Insulin (pg/ml) Insulin (pg/ml) *** *** 2000 1000 0 Water Glucose Water Glucose Water Glucose Water Glucose WT W T KHK-A/CKHK-A/C KO KO Normal Mouse Mouse cannot metabolize fructose Mice That cannot Metabolize Fructose are Protected Lanaspa, Nature Com 2013 HFHSD KO Sugar and Fat Work Together ## ## ## # ## *** * 1 .5 8 1 .06 4 * * * 0 .5 2 0 .00 ** 1 .5 1 .0 0 .5 WWT T KHK-A/C KO KHK - A /C KO # * 1 .0 Sugar and Fat 0 .5 LFD H FD H FH SD LFD WT HFD HFHSD KHK - A /C KO 10 5 0 0 .0 0 .0 LLFD F D HHFD F D HHFHSD F H S D LLFD F D HHFD F D HHFHSD FHSD 15 # 1 .5 C O L 1 A 1 / -a c ti n r a ti o 10 Liver Fibrosis ### 2 .0 C D 6 8 / -a c ti n r a ti o Intrahepatic triglyceride M C P -1 / -a c ti n r a ti o (mg/mg protein) Liver Inflammation T im p 1 / -a c ti n ra ti o Liver Fat 12 2 .0 LFD H FD H FH SD LFD WT HFD HFHSD KHK - A /C KO High Fat Ishimoto et al Hepatology 2013 LFD Sugar Intake in the United States •Sugar and HFCS Intake Represents 15% of all Calories in the average adult •Minority populations (African-American and Mexican American) are eating more JAMA Intern Med. 2014;:. Cardiovascular Mortality Increases with Sugar Intake Risk for Heart Attack or Stroke 100% 50% JAMA Intern Med. 2014;:. Is There Historical Evidence Supporting a Role for Sugar in Obesity? Egypt and Obesity Among the Pharaohs and Wealthy of the Old Kingdom Obesity first appeared in Egypt among Pharaohs and the wealthy of the Old Kingdom Apiaries also date to this time, as does the appearance of dental cavities among the Pharaohs and wealthy Queen Hatshepsut, who became Pharaoh, was recently discovered to have been both obese and probably diabetic based on studies of her mummyshe also had carious teeth Queen Hatshepsut The Discovery of Sugar Cane and the Rise of Sugar Sushruta Describes Diabetes in the Ganges Valley of India Diabetes develops in the individual who “is in the habit of taking sweet liquids” Sushruta The Spread of Sugarcane 1400 A.D 700 A.D 1500 A.D 950 A.D 500 A.D 500 A.D 600 A.D 500 B.C Sugar and Royalty– The Adipose Rex Syndrome King Edward I of England ordered 1877 pounds of sugar for the royal household in 1287 and 6,258 pounds of sugar in 1288 One pound of sugar equaled 28 pounds of cheese or 34 dozen eggs Sugar as a Medicine St Thomas Aquinas was an Italian Priest in the 13th Century who liked sugar so much that he argued it was a medicine and could be eaten during the fast He went on to become very obese King Manuel and his Gift of Sugar Sugar is Introduced to the Americas by Christopher Columbus On his second voyage in 1493, Columbus stopped in La Gomera in the Canary Islands where he had a romance with Beatriz de Bobadilla. Christopher Columbus Beatriz de Bobadilla On leaving, she gave sugar cane cuttings to Columbus to bring to America Increased Production in Sugar Plantations makes Sugar Affordable The Triangle Trade Sugar: The Perfect Additive 1610-asia 1650-mexico 1550Caribbean 1615-africa Sugar Intake increases in England and Holland First “For one fat person in France or Spain, there are a hundred in England” William Wadd 1816 The Emergence of Morbid Obesity Daniel Lambert died at age 40 with a weight of 732 pounds. “His waistcoat could easily enclose 7 persons of ordinary size.” Encyclopedia Brittanica, 1809 The Fat Switch, 2012, Mercola.com The Rise of Sugar Sugar intake per year Johnson et al 1700 4 lbs 1800 18 lbs 1900 90 lbs 2000 155 lbs Am J Clin Nutr 86:899-906, 2007 Sugar Intake Correlates with Obesity Rates HFCS introduced 60 50 60 WWI and II 40 20 40 30 20 Sugar intake Obesity rate 10 0 0 1700 1750 1800 1850 1900 1950 2000 Obesity Prevalence % Sugar Consumption Kilograms/Individual 80 Based on Disappearance Data Year Johnson et al Am J Clin Nutr 86:899-906, 2007 Sugar Intake Correlates with Diabetes Rates WWI and II Annual Per Capita Intake of Soft Drinks (12 oz) in the USA Anderson TA. Annu Rev Nutr 1982;2:113-32 Sweetened Beverage Intake in the USA, 19782000 Nielsen and Popkin.J Prev Med 2004;27:205-10 Sugar and the Maori James Cook’s Voyage 1769 “The men are of the size of the larger European Stout, clean, limber, active, and fleshy but never fat” Joseph Banks Julien-Marie Crozet’s Voyage, 1791 “The men were great eaters…. They were partial to sugar; they drank tea and coffee with us…they show repugnance for wine.. .and they do not eat salt” Dietary Survey 1945. Sugar represents 15% of total dietary (calorie) intake in Maori Wright St Clair. New Zealand Medical Journal 1969; McLaughlin and Wilson New Zealand Med J 1945 Western Diet and Obesity in Nauru Jared Diamond, Nature 2003 What about Fruits???? Relatively Lower Content of Fructose Have other good components (vitamin C, antioxidants, flavonols, fiber, potassium, etc) Summary •The storing of FAT is a biological process •Sugar contains Fructose that activates this process •Eating Sugar increases Body FAT •Eating Sugar causes the Metabolic Syndrome (prediabetes) and increases the risk for Diabetes, Heart Disease, Liver and Kidney Disease •Sugar intake has Increased over the Centuries and intake is highest in minority populations. One of the major causes is SOFT DRINKS •IT IS TIME TO CAMPAIGN AGAINST SOFT DRINKS!!!!! Special Thanks Miguel Lanaspa PhD Takuji Ishimoto MD, PhD Gaby SanchezLozada, PhD Yuri Sautin PhD And to all of my collaborators, past and present Type of Sugary Beverage Changes During Childhood Age 2-5 Daily intake of sugary beverages 10-12 tsp added sugars/day Age 6-11 Age 12-19 Miller et al Am J Prev Med 2013; 45: 416-421 The Problem with Soft Drinks