Because they know when they are full and satisfied. They dont have Control over what they eat. But how much they eat.
you might want to see a specialist for something that you know is specifically is wrong with your body such as your having sight problems or hearing issues. You would see a primary care if you are just feeling sick or are hurting and you need a diagnosis to find out
Since you didn't include the options, a combination eating less and exercising more generally results in weight loss.
Doesn't cure influenza
It just tells you if you have it.
It’s management for your work both your self