Public health, like medicine, focuses on three stages of prevention: primary, secondary, and tertiary. Primary prevention means preventing disease before it occurs by altering behaviors.

Always review your policy's declaration page or summary of benefits to identify which benefits are primary versus secondary. Some policies might offer primary coverage for certain benefits (like ...

The causes of primary versus secondary hyperthyroidism differ. Thyroid problems cause primary hyperthyroidism while problems in the pituitary gland cause secondary hyperthyroidism. Hyperthyroidism ...