This week marks National Health Week, with a focus on prevention and making changes to one's lifestyle that can help us lead healthier lives. The St. Clair County Health Department's Dr. Annette Mercatante says local residents have been slow to change their ways, leading to the county being consistently ranked towards the bottom of the list when it comes to some health matters. Dr. Mercatante says public heath starts at home, from nutrition to safety precautions and emergency preparedness. She says the first step we take towards public health is in the comfort of your own home. Links to YouTube videos on how to make changes available on the county's health department website at stclaircounty.org.