As a lifelong health and fitness enthusiast with 15 years of experience, Rachel MacPherson is passionate about cutting through fads and noise. Her aim is to clearly communicate health information with ...

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 ...

“Normal” levels of vitamin B12 may not be enough to ward off dementia, new research finds. Researchers at the University of California San Francisco studied 231 healthy older adults (averaging 71 ...