Obesity or overweight are an excessive or abnormal accumulation of fat that may deteriorate health. Nowadays, the problem of obesity is becoming more serious and widespread. Obesity is calculated with the help of a special formula, in which a person’s weight is divided by the square of their height (kg/m 2 ). Body mass index (BMI) is an index that shows the ratio of the weight to the height of a person and is used to define overweight. Now, approximately 13% of adults around the world have a BMI of 30 or more, that makes them obese (Ogden, Carroll, & Flegal, 2014). Background History of Obesity Constant malnutrition and food shortage have been one of the biggest problems for humanity since the beginning of its history. The problem of obesity is quite a new problem that appeared a few decades ago. Only in the eighteenth century with the technological advances, the problem of malnutrition began to disappear. These technologies helped improve public health, as quality, quantity, and variety of food increased (Hattori & Strum, 2013). After the World War II, a second wave of new technologies that caused the reduction of physical activity among the population took place. At that time, the first signs of obesity becoming a chronic disease with pathologic consequences appeared. The shortage of food throughout most of the human history was the reason why being stout was considered good even in the opinion of those times’ doctors and was reflected in the arts and literature. Only in the second half of the nineteenth century being stout was not good for aesthetic reasons. Then, in the twentieth century, obesity was associated with the decrease of longevity (Ng et al., 2014). Last Forty Years Since 1977, overweight rates have increased in every country in the world, no matter whether it is a developed country like the USA, UK, and Germany where food is affordable and abundant or the countries like Zimbabwe, Somalia, and Angola where malnutrition is a major problem (Ng et al., 2014). North Korea’s overweight rates are the lowest (from 1.6% in 1977 to 2.8% 2017). The largest rates belong to the island countries of Pacific Ocean, such as Tonga, Samoa, and Tuvalu. They have doubled for the same period of time. Nowadays, obesity is a risk factor for mortality from chronic nephritis. Also, it is associated with hypertension, cardiovascular diseases, respiratory problems, kidney diseases, diabetes and even cancer (Wentz, Björk, & Dahlgren, 2017). Current Situation The Causes of Obesity The main cause of overweight and obesity is the imbalance of energy between calories consumed and calories burnt. This imbalance is caused by the consumption of a great amount of fat food and the decrease in physical activity and the sedentary way of life due to the appearance of new forms of work and the developed transport system (Ogden et al., 2014). The underdeveloped countries also experience the problem of obesity. It is remarkable that they suffer from both obesity and malnutrition at the same time. The reason for this is that in these countries people cannot afford expensive and high nutritious food and are forced to buy cheap food which contains a large amount of fat and sugar. This type of a diet along with the low level of