A vitamin B12 level test checks the amount of vitamin B12 in the body. Normal levels usually range from 200 to 900 picograms per milliliter, but the way of measuring will depend on the laboratory.

A vitamin B12 deficiency can cause cognitive issues, muscle weakness and other problems. Here's how to make sure you're getting enough vitamin B12.

Vitamin B12 deficiency can cause a number of strange sensations, like numbness, tingling, and more. “It felt like electricity ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...

For several months during the summer of 2022, my dog Scout vomited at 3 a.m. nearly every day. If you have a dog, you know the sound. And each time, she gobbled up her mess before I could get to it, ...

A top Indian neurologist warns that common medications like Metformin and proton pump inhibitors (PPIs) can silently deplete ...

We always believe we are getting enough vitamins as long as we are having a balanced diet, taking the occasional multivitamin supplements, and generally feeling alright. But then out of the blue, more ...

Recent research highlights a significant link between B vitamins (B6, B9, B12) and cognitive performance in older adults.

When you shop through retailer links on our site, we may earn affiliate commissions. 100% of the fees we collect are used to support our nonprofit mission. Learn more. Doctors don't always have B 12 ...