Help me to fight against the overweight in the world

I am a 23-year-old young man who helps people around the world to control their diet and lifestyle through the exercise this campaign will cover more space and can help more people in the world fight this disease, at home 50 USD I will give 1 or 2 random advice to people who come to my Facebook page Kevin Romero Fit (https://www.facebook.com/kevinromerofit/) I hope they help me to help more people.

What are overweight and obesity?

Overweight and obesity are defined as an abnormal or excessive accumulation of fat that can be harmful to health.

The body mass index (BMI) is a simple indicator of the relationship between weight and height that is frequently used to identify overweight and obesity in adults. It is calculated by dividing a person's weight in kilos by the square of their height in meters (kg / m2).

Adults

In the case of adults, WHO defines overweight and obesity as follows:

overweight: BMI equal to or greater than 25.

Obesity: BMI equal to or greater than 30.

The BMI provides the most useful measure of overweight and obesity in the population, as it is the same for both sexes and for adults of all ages. However, it should be considered as an approximate value because it may not correspond to the same level of thickness in different people.

In the case of children, it is necessary to take into account age when defining overweight and obesity.

Since 1975, obesity has almost tripled worldwide. In 2016, more than 1900 million adults 18 and over were overweight, of which more than 650 million were obese. In 2016, 39% of adults 18 or older were overweight, and 13% were obese.