Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Weight loss is defined in the medical context as the reduction of the total body mass, including loss of fluid and body fat, caused by a disease or conscious fitness. According to medical evidence, overweight represents serious health consequences associated with heart disease, diabetes, stroke, gallstones and others. Nevertheless, novel studies carried out on Chia seeds, citrus fruits and green coffee beans showed optimistic results, emphasizing their positive effects in weight loss. Learn more about weight loss and its methods in this book.