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 have had ridges in my nails in my thumb and ring finger for years. My friend says I should see my doctor, is that true?Usually a ridge is perpendicular in your nail. If this has developed very quickly and you have other symptoms like feeling chronically fatigued, constipation, and/or brittle hair, you may want to see your doctor, because these are signs of an issue with your thyroid.However, even if you've had these ridges for over a period of time, you should still talk to your doctor and ask for a thyroid panel and test your B12 levels.New research says the dangers of Acetaminophen are "underestimated." This concerns me because I use it and give it to my kids. Should I stop?Acetaminophen can deplete glutathione, an important antioxidant in your liver. Once it's depleted, your liver becomes more prone to damage from the toxins in your body that it's trying to detoxify in the first place.This doesn't mean you should completely stop taking it. You just have to be aware of how much acetaminophen you're using. When it comes to over-the-counter drugs, you have to read the label of all the medicine you're taking to make sure you're not overdoing it.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 (1.877.711.5211) so he can provide you with support and helpful advice.