Medically reviewed by Christopher Lee, MD Key Takeaways Normal hemoglobin levels differ for men and women, with adult males ...

Hematocrit is the percentage of red blood cells in a person‘s blood. A typical hematocrit range in adults is 36–54%. However, age, sex, and health conditions can influence hematocrit levels. Low red ...

A blood sugar chart showing normal levels can help people determine what range their blood sugar levels should be in at different times of the day. Doctors use blood sugar charts, or glucose charts, ...

“What is that thing on your shoulder?” has been the question I’ve been asked most frequently for the last month. Understandably so. For the last 30 days, just barely peeking out from under the sleeve ...

Thyroid level tests, including the TSH test, help doctors diagnose thyroid conditions, including hypothyroidism or hyperthyroidism. Treatment may include hormones or other medications. The thyroid is ...

Becky Brown is a professional writer whose mission it is to empower readers. She tells stories that help people make smart, informed decisions about their health and lives. She’s covered everything ...

Higher than normal blood ammonia levels are called hyperammonemia. Acceptable levels depend on age and sex but range from about 42 µg/dL in infants to 200 µg/dL adults assigned male at birth. When you ...

Sarah is an experienced writer and editor enthusiastic about helping readers live their healthiest and happiest lives. Before joining Forbes Health, Sarah worked as a writer for various digital ...

Elevated prolactin levels can cause symptoms like irregular periods and nipple discharge. Low prolactin levels are less common and can cause a reduced milk supply in lactating individuals. High ...

Magnesium is one of the major minerals your body needs to function properly. You get it from foods and supplements. It's also an ingredient in some medicines such as antacids and laxatives. More than ...