Obesity occurs in all countries and is one of the most serious problems in modern society. Obesity issues have become a matter of concern for individuals around the world. What's more, obesity rates continue to rise around the world. One of the main causes is an unhealthy diet. Obesity is also caused by lack of exercise and lack of education and awareness. Obesity therefore has various effects, including the risk of suffering from various health problems, increased health costs and low self-esteem. One of the main causes is poor diet. On the one hand, there are high-calorie foods in the daily diet, such as chocolate, sugar, cheese and butter. Teenagers are increasingly eating high-fat hamburgers and pizzas at fast food restaurants. For example, according to Altman and Leitch (2012), in Mexico, students drink cola rather than water due to the lack of hygienic drinking water. Coca Cola has agreements with many schools whereby they will exclusively sell Coca Cola inside the schools. Mexicans are therefore planning to become the most obese country, with 70% of people overweight, including 30% obsessive. (Altman and Leitch, 2012). The foods most consumed by more than 80% of children are white bread, salty snacks, crisps, biscuits and chocolate confectionery. In addition, almost 20% of children do not eat any fruit. In general, children consume about half of the recommended five servings of fruits and vegetables per day. On the other hand, some people consider traditional food healthier; However, some traditional foods are also extremely fatty. For example, the Chinese are careful to use oil to heat ingredients quickly. This makes the food quite fatty and high in fat. In addition, diets are evolving today based on ...... middle of article ......ty. [Online]. Available: http://www.worldobesity.org/aboutobesity/. [Consulted: May 2, 2014]3. Olivier, Initial. (2006). Key facts about our weight problem. [Online]. Available: http://www.jamieoliver.com/media/jo_sd_killer_facts.pdf?phpMyAdmin=06af156b76166043e2845ee292db12ee. [Consulted: May 5, 2014]4. World Health Organization. (2013).Obesityandoverweight.[Online].Available: http://www.who.int/mediacentre/factsheets/fs311/en/5. Great chance of overcoming obesity without “strict” food labeling. (November 29, 2013). The Sydney Morning Herald. [Online]. Available: http://www.smh.com.au/national/fat-chance-of-beating-obesity-without-strict-food-labelling-20131128-2yehd.html6. Obesity costs $56 billion per year: study. (February 28, 2010). THE AGE. [Online]. Available: http://news.theage.com.au/breaking-news-national/obesity-costing-56b-a-year-study-20100228-pats.html. [Accessed: May5.2014]