Yet humans have eyes and can see they are fat. They have the instinct to know what type of body looks healthy or unhealthy. Also every human knows that eating l

Yet humans have eyes and can see they are fat. They have the instinct to know what type of body looks healthy or unhealthy. Also every human knows that eating less food will reduce their weight. Whether we have the ability to change our habits is another question but is unrelated to my proposition.