This article was reviewed by Darragh O’Carroll, MD. Key Takeaways: After a vasectomy, sperm production doesn’t stop — but sperm can’t travel through the vas deferens anymore. Instead, your body reabsorbs the sperm it makes. […]

This article was reviewed by Sara Harcharik Perkins, MD. Key Takeaways: A widening hair part is a common early sign of female pattern hair loss, which affects up to 40 percent of women by age […]

This article was reviewed by Lynn Marie Morski, MD, JD. Key Takeaways:  Niacinamide is one of two forms of vitamin B3, alongside nicotinic acid (niacin). Some research shows that taking niacinamide may lead to a […]

This article was reviewed by Knox Beasley, MD. Key Takeaways: A mature hairline is age-related hair loss that shifts into an M or U shape before stabilizing. A receding hairline signals early male pattern hair […]

This article was reviewed by Felix Gussone, MD. Key Takeaways: Preparing properly for lab tests helps ensure your results are accurate and reliable. Some tests — like fasting cholesterol or fasting glucose — require you […]