Food that contains approximately 6,000 calories that Saith, 14, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at his family home in Mexico City, Mexico, April 29, 2021. "I was bullied at school by teachers and classmates because I look very big for my age. I was bullied from kindergarten to primary school. I used to feel very sad, frustrated and angry, at some point I didn't want to go to school anymore," said Saith. Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, where Saith underwent a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 5,850 calories that Carlos, 17, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at his home in Mexico City, Mexico, April 6, 2021. Weighing 137 kilos aged 16, more than twice the recommended weight, Carlos tested positive for COVID-19 in January and spent a month in hospital, much of that in pediatric intensive care. Carlos said he started overeating when pressure intensified at school. Attempts to change his eating habits repeatedly failed. "I woke up and realized that if I don't make a change, I'll always be like this: I'll never mature; always have this body," he said. "Sometimes my body wants something sugary, but I say no." REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 6,250 calories that Martin, 48, typically eats in one day, is displayed for a photograph at his home in Mexico City, Mexico, March 12, 2021. Martin says he suffers from a compulsive eating disorder. "All my problems with respect to my overeating started when my mother left us. I couldn't cook anything and I started having big meals on the street such as at buffets, stalls on the street," he said. "I am a member of Overeating Anonymous, with them I try to work very hard to control myself and not overeat." Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 5,600 calories that Guztavo, 17, used to eat in one day before taking part in a weight loss program, is displayed for a photograph at his family home in San Luis Ayucan, Mexico, February 23, 2021. "My mother was very worried about my health, she took me to the doctor to control my weight and improve my diet," said Guztavo. Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, where Guztavo underwent a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 4,100 calories that Perla, 19, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at her family home in Mexico City, Mexico, February 17, 2021. "I never had problems with my appearance, I think my classmates had more problems seeing my weight and my appearance than I did. I didn't care," said Perla. Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, where Perla underwent a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 8,200 calories that Samuel, 47, would typically consume in one day before he had brain surgery following a stroke, is displayed for a photograph at his home in Mexico City, Mexico, February 3, 2021. "I regret not taking care of myself, on having annual check-ups like blood tests to check my sugar levels, cholesterol," said Samuel. "With obesity, I developed diabetes and had an operation on my head for a blood clot due to a stroke." Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food, that contains approximately 6,600 calories that Helen, 12, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at her family home in Toluca, Mexico, February 1, 2021. "I was overweight for my age and my parents got very worried. They took me to the hospital for a weight loss program and I was taught how to eat well and healthy. I used to eat a lot of sweets and junk food. Now I eat a lot healthier. My weight at the beginning of the program was 98 kg and I hope to reach my normal weight of 60/65 kg," said Helen. Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, where Helen underwent a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Food that contains approximately 5,200 calories that Pricila, 18, used to consume in one day before taking part in a weight loss program, is displayed for a photograph at her family home in Acolman, Mexico, January 12, 2021. Pricila had a gastric sleeve surgery, during which a part of the stomach is removed, for weight loss at 16. Realization hit her when aged 15 she weighed 113 kilos, equal to her father. Pricila, who has a metabolic disease, said even with exercise and a nutrition plan her weight loss had stalled, making her a candidate for the surgery. "When I tried to lose weight, there was temptation everywhere," she said. Pricila now weighs 83 kilos. "It was a real feat, especially because I was so used to eating junk food, sweets, all the time." REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES 

Food that contains approximately 6,600 calories that Daniela typically consumes in one day as she tries to lose weight while taking part in a weight loss program, is displayed for a photograph at her family home in Texcoco, Mexico, January 8, 2021. Daniela was 11 years old when a doctor told her she would not live more than another six or seven years. Weighing 75 kilos (165 lb), about twice the recommended weight for her age, she had just suffered a minor heart attack. That was two years ago. She still remembers the pain in her chest. Then she was also diagnosed with diabetes. Daniela knows the disease well: she watched eight family members die from its complications. "The doctor told me that I'll die, that I'll not even turn 18 years old," she said. Now Daniela is 14 years old and weighs 81 kilos. Reuters was unable to contact the doctor, who treated Daniela at a different facility previously, but her current caseworker confirmed Daniela's account. "Instead of losing weight, I put on more," Daniela added. Nutritionist Betzabe Salgado, who works at Hospital Infantil de Mexico Federico Gomez, where Daniela is undergoing a weight loss program, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES. 

Hot dogs are displayed during the official weigh-in ceremony for the Nathan's Famous Fourth of July International Hot Dog Eating Contest at the Empire State Building in New York, U.S., July 3, 2019. REUTERS/Brendan McDermid 

Bucka, the 11 year-old overweight mongrel dog, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 13, 2018. Picture taken June 13, 2018. REUTERS/Tamas Kaszas 

Bucka, the 11 year-old overweight mongrel dog eats during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 13, 2018. Picture taken June 13, 2018. REUTERS/Tamas Kaszas 

Guba, the 6 year-old normal weight Mudi, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

Guba, the 6 year-old normal weight Mudi, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

Bucka, the 11 year-old overweight mongrel dog, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 13, 2018. Picture taken June 13, 2018. REUTERS/Tamas Kaszas 

Guba, the 6 year-old Mudi eats during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

Rohan, the 6 year-old normal weight Border collie eats during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

Bucka, the 11 year-old overweight mongrel dog, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 13, 2018. Picture taken June 13, 2018. REUTERS/Tamas Kaszas 

Guba, the 6 year-old normal weight Mudi, is seen during a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

Guba, the 6 year-old normal weight Mudi, is seen before a test trying to find the reasons for obesity at the Ethology Department of the ELTE University in Budapest, Hungary, June 11, 2018. Picture taken June 11, 2018. REUTERS/Tamas Kaszas 

EMBARGOED WED. 0100 GMT. HEALTH-OBESITY/ - The number of obese children and adolescents worldwide has jumped tenfold in the past 40 years . 

A player is pictured during his "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

Players pose for a photo during their "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

A man wears a bandage on knee during a "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

A player takes the ball during his "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

Players fight for the ball during their "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

A man uses a weighing scale before his "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

Players receive nutritional guidance after their "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

Players talk as they wait to play their "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

A man celebrates a goal during his "Futbol de Peso" (Soccer of Weight ) league soccer match, a league for obese men who want to improve their health through soccer and nutritional counseling, in San Nicolas de los Garza, Mexico, September 16, 2017. REUTERS/Daniel Becerril 

A competitor prepares to go in front of judges at a casting call for the second season of the reality television programme "Dance Your Ass Off", during which overweight or obese contestants hope to lose weight by dancing, in New York December 18, 2009. REUTERS/Finbarr O'Reilly/File Photo 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, waits before being transferred to a clinic to get a gastric balloon implanted in Palmira near Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, waits before being transferred to a clinic to get a gastric balloon implanted in Palmira near Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, is transferred to a clinic to get a gastric balloon implanted, in Palmira near Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, is transferred to a clinic to get a gastric balloon implanted, in Palmira near Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, is transferred to a clinic to get a gastric balloon implanted, in Palmira near Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

Oscar Vasquez Morales, 44, considered the most obese man in the country at about 400 kg, gestures next to bariatric surgeon in clinic in Cali, Colombia May 16, 2016. REUTERS/Jaime Saldarriaga 

A detail of a can of Coca-Cola is seen in London, Britain March 16, 2016. Britain will introduce a sugar levy on soft drinks in two years' time to tackle a growing obesity crisis, finance minister George Osborne said in a surprise announcement on Wednesday, hitting share prices in drinks and sugar firms. REUTERS/Stefan Wermuth 

A detail of a can of Coca-Cola is seen in London, Britain March 16, 2016. Britain will introduce a sugar levy on soft drinks in two years' time to tackle a growing obesity crisis, finance minister George Osborne said in a surprise announcement on Wednesday, hitting share prices in drinks and sugar firms. REUTERS/Stefan Wermuth 

A detail of a can of Coca-Cola is seen in London, Britain March 16, 2016. Britain will introduce a sugar levy on soft drinks in two years' time to tackle a growing obesity crisis, finance minister George Osborne said in a surprise announcement on Wednesday, hitting share prices in drinks and sugar firms. REUTERS/Stefan Wermuth 

Soft drinks bottles are displayed on a shelf in a shop in London in this file photograph dated April 24, 2013. British lawmakers urged the government on November 30, 2015 to introduce tough measures, including a tax on sugary drinks and controls on price promotions for "unhealthy food and drink", to help tackle childhood obesity. REUTERS/Suzanne Plunkett/files 

A worker carries a pizza for delivery as he exits a Domino's pizza store in Sydney, Australia, August 12, 2015. Fast food may be falling out of favour in many countries around the world but companies are making healthy profits and boldly innovating in the unlikely market of Australia. Contrary to stereotypes of a beach-going community of fitness fanatics, official data out this week showed 40 percent of Australian adults are dangerously obese and have a poor diet that includes lashings of fast food. That makes Australia a hotbed for innovation by companies including homegrown firm Domino's Pizza Enterprises Ltd, McDonald's Corp and Yum! Brands Inc's, KFC and Pizza Hut as they struggle to win over health-conscious diners in other countries. Picture taken August 12, 2015. REUTERS/David Gray 

A worker carries a pizza for delivery as he exits a Domino's pizza store in Sydney, Australia, August 12, 2015. Fast food may be falling out of favour in many countries around the world but companies are making healthy profits and boldly innovating in the unlikely market of Australia. Contrary to stereotypes of a beach-going community of fitness fanatics, official data out this week showed 40 percent of Australian adults are dangerously obese and have a poor diet that includes lashings of fast food. That makes Australia a hotbed for innovation by companies including homegrown firm Domino's Pizza Enterprises Ltd, McDonald's Corp and Yum! Brands Inc's, KFC and Pizza Hut as they struggle to win over health-conscious diners in other countries. Picture taken August 12, 2015. REUTERS/David Gray 

A man crosses a main road as pedestrians carrying food walk along the footpath in central Sydney, Australia, August 12, 2015. Fast food may be falling out of favour in many countries around the world but companies are making healthy profits and boldly innovating in the unlikely market of Australia. Contrary to stereotypes of a beach-going community of fitness fanatics, official data out this week showed 40 percent of Australian adults are dangerously obese and have a poor diet that includes lashings of fast food. That makes Australia a hotbed for innovation by companies including homegrown firm Domino's Pizza Enterprises Ltd, McDonald's Corp and Yum! Brands Inc's, KFC and Pizza Hut as they struggle to win over health-conscious diners in other countries. Picture taken August 12, 2015. REUTERS/David Gray 

A metrobus driver performs squats at Rio de los Remedios metrobus station in Mexico City, July 23, 2015. To combat growing obesity, lawmakers have introduced a new campaign encouraging physical activity. This machine, installed in 21 metrobus stations around the city, asks its user to do 10 squats, and when all ten are performed correctly, it prints out a free ticket. REUTERS/Edgard Garrido 

A woman with an instructor perform squats at Rio de los Remedios metrobus station in Mexico City, July 23, 2015. To combat growing obesity, lawmakers have introduced a new campaign encouraging physical activity. This machine, installed in 21 metrobus stations around the city, asks its user to do 10 squats, and when all ten are performed correctly, it prints out a free ticket. REUTERS/Edgard Garrido 

The participants of an aerobics class poses for a picture in the Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Hazel Castillo walks with her children to an aerobics class in Los Guidos de Desamparados July 23, 2015. Castillo lost 7 kilograms in six months while participating in the health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Hazel Castillo combs her daughter Tyra Jaen's hair, at home before going to an aerobics class in Los Guidos de Desamparados July 23, 2015. Castillo lost 7 kilograms in six months while participating in the health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Women take part in an aerobics class in Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Hazel Castillo leaves her home with her three children to an aerobics class in Los Guidos de Desamparados July 23, 2015. Castillo lost 7 kilograms in six months while participating in the health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Hazel Castillo, takes part in an aerobics class next to her son Heiner Jaen, in Los Guidos de Desamparados July 23, 2015. Castillo lost 7 kilograms in six months while participating in the health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Andrea Abarca, (C) leads an aerobics class in Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media.
REUTERS/Juan Carlos Ulate TPX IMAGES OF THE DAY

Andrea Abarca, (L) leads an aerobics class in Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Andrea Abarca (R) congratulates Hazel Castillo after announcing that she lost 7 kilograms, before an aerobics class in Los Guidos de Desamparados July 23, 2015. Castillo lost 7 kilograms in six months while participating in the health program organized by Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Women take part in an aerobics class in Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

A woman takes part in an aerobics class in Los Guidos de Desamparados July 23, 2015. More than 300 women participated in a physical health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. REUTERS/Juan Carlos Ulate

Women take part in an aerobics class in Los Guidos de Desamparados July 20, 2015. More than 300 women participated in a physical health program organized by Andrea Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. Picture taken July 20, 2015. REUTERS/Juan Carlos Ulate

Andrea Abarca, (C) leads an aerobics class in Los Guidos de Desamparados July 20, 2015. More than 300 women participated in a physical health program organized by Abarca, which aims to combat obesity and sedentary behavior in poor women living in a slum. The National Nutrition Survey shows that the Costa Rican population has 62.4 percent of adult men who are obese , while among women the percentage was 77.3, according to local media. Picture taken July 20, 2015. REUTERS/Juan Carlos Ulate