<span>Assistive bioengineering involves medical devices and equipment that continuously work on machine learning by the way they obtain information from surrounding. Suppose an assistive robot, it will try to learn what patient does and then tries to improve and give most optimistic assistant to them and also it goes far beyond their needs. While, adaptive bioengineering infers to be just adaptation to the situation of the patient till it's fairly enough decided to be in complete adaption to patients' needs. It also includes machine learning but not improving more than what patient needs.
Assistive system is more on improving side in comparison to adaptive bioengineering.</span>
They might be shy or maybe they think that if they report it they'll loose a "friend"
The answer is take antibiotics.
Some factors that affect your health you can control are: physical environment, heredity, culture, social environment, behavior, and attitude.