Presented by Fima Lifshitz, M.D.
Obesity results from genetic, nutritional, and physical activity alterations; structural environmental changes also drive obesity, though these alterations are not usually addressed. For the previous 300 years there were minimal weight variations among people, with few severely obese individuals. However, since the 1980s a new phase of transition to overeating and under-activity has ensued. Currently, two billion people are obese and four billion are expected to become obese within the next 10 years. Excess obesity leads to chronic diseases such as cardiovascular disease, heart failure, stroke, hypertension, diabetes, osteoarthritis, and many types of cancer. Nonetheless, politicians, governments, and industries have not addressed their responsibility with regard to the causes of the obesity epidemic.