Ephedra is an herbal suplletment with an excellent safety profile and no reports of adverse events.

Lack of education is correlated with higher rates of smoking and cancer.

Many seniors suffer from social isolation.

There are no vaccine preventable cancers.

Which of the following, released by microbial activity in the intestines of cattle and in paddy fields where rice is grown, also contributes to the greenhouse effect?

Probabilities apply outcomes from the past to predicting future outcomes under similar conditions.

Which of these behaviors are the most difficult to change?

The general approach to water treatment is directed primarily at this type of disease, the most common and historically devastating type of waterborne disease.

A website contains information about the efficacy of a drug, but does not disclose the sponsor or any contact information for further information.  What is the best course of action?

Mental health is easily accessible to everyone an free of stigma.