You can not really prevent disease in general.
However:-
It is possible to prevent specific diseases (eg smallpox) by implementing a worldwide program of vaccination.
It is possible to build sewage systems that prevent contamination of drinking water.
It is possible to teach people about personal hygiene and a healthy life style.
It is possible to implement food hygiene laws.
All these help to prevent diseases and improve the health of a population.
Coffee won't prevent Alzheimer's disease.
Vaccines, such Fluvax, can prevent viral disease.
No, it helps to prevent disease.
Tetanus does not prevent a disease; it is a disease.
Prophy means "to prevent disease". For example a dental prophy is a teeth cleaning done to prevent disease.
goiters
To prevent disease
yes
No. They definitely help prevent, and can prevent disease, but there is still a possibility you can still get the disease (or pregnant). They do lower the risk a lot though.
Cells can cause disease, but can also prevent disease.
You can't prevent it from happening, because it's hereditary.
You can't prevent it from happening, because it's hereditary.