Infectious diseases obviously affect us; our personal health, and the personal health of other people. If someone else has an infectious disease then you would probably stay away from such a person. If you had an infectious disease, other people would probably stay away from you. This isn't true for noninfectious diseases where we don't have to worry about infecting or being infected by other people.
If he wants surgery he has to check if his eyes will handle the surgery or if he really needs it
B. False. Maintaining an unhealthy weight would cause stress on the body, but maintaining a healthy weight does not.
