One positive example of health fitness advertisements would be advertisements that get you to come to the gym to work out.
A negative example would be dieting pills that make it seem like you don't have to put in any work to lose weight healthily.
Alcohol tolerance may lead to (or be a sign of) alcohol dependency
A. Geriatrics is the study of older people
Gynecology is the study of women's reproductive health
Obstetrics is the study of pregnancy and child birth
Pediatrics is the study of children