The first trimester is 13 weeks long, though week 12 marks an important milestone as miscarriage risk drops. Here's what's actually happening during those early weeks.
Treating a cold sore early makes a real difference. Learn which options actually speed healing, from prescription antivirals to evidence-backed home remedies.
The parathyroid glands produce one key hormone, PTH, which keeps your calcium levels balanced and works closely with vitamin D to support bone and nerve health.