Listen in as Dr. Mike provides the answers to a wealth of health and wellness questions. Here you'll find the answers to a wealth of health and wellness questions posed by Healthy Talk fans. Listen in because what you know helps ensure healthy choices you can live with. Today on Healthy Talk, you wanted to know:I saw you on Fox News and you said that we all need to take a multivitamin, even if we eat healthy. Can you provide specific references or studies that conclude a multivitamin can improve overall health?There's been some back and forth on whether or not a multivitamin can boost the health of a person's life.However, you first need to define what you mean by health. There are no studies that show you wake up more energized, don't need coffee, and skip out your door if you take a multivitamin.But, there are specific studies that show a multivitamin does help improve the health in someone who's had cancer, cognitive problems, heart disease and other health aliments.If you exercise and eat well, you can still benefit from taking a multivitamin.I wonder if you can comment on the agreement between the New York Attorney General and GNC. In the article I read, the reporter said that nutrition president called the move "face-saving" by the AG. Do you think the damage has been done, or will consumers that might have had some doubts be assured that supplements are safe and effective?The AG had DNA barcoding done on herbal supplements, which is a process of removing the cap and running a series of tests on the powder inside to see what herbs (and other ingredients) are in there. This method is a quick, easy way to get something tested. This form of testing is actually not considered reliable for raw materials and has lots of credibility issues.However, further testing will be done. Supplement users understand the bias that surrounds this issue, the only people that might have been influenced by the New York Attorney General already had an issue with supplements to begin with.If you have a health question or concern, Dr. Mike encourages you to write him at askdrmikesmith@radiomd.com or call in, toll-free, to the LIVE radio show (1.844.305.7800) so he can provide you with support and helpful advice.