In the western world, where most people have access to food when they want it, an epidemic of overweight is forming; in most cases due to too much unhealthy food and too little exercise.

As a result, many people try to lose weight through diets and other methods. But weight loss is not easy to accomplish, and the methods available are quite the jungle to navigate.

What types of weight loss methods work? Which methods are worth spending time, money and energy on, and which are not? Are some methods hazardous to our health?

Keynotes about weight loss take their outset in questions like these, and may offer concrete advice on what to do if you want to lose weight.