Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. According to statistics, obesity has more than doubled globally since 1980. The abnormal fat accumulation negatively affects human health – overweight and obesity are amongst the leading causes of global deaths, killing at least 2.8 million adults per year. Obesity increases risk factors for grave diseases, such as diabetes, cardiovascular diseases and cancer. However, poorly controlled and massive weight loss can have equally harmful effect on health as well. Learn more about management of obesity in this book.