While it's easy to take supplements to increase your intake of vitamin B12, plenty of delicious foods naturally provide this ...

Energy drinks and supplements may push vitamin B6 intake too high. Here’s how toxicity happens, symptoms to watch for, and ...

Vitamin B12 is generally safe, but rare reactions like allergies or skin flare-ups can occur. Serious side effects are uncommon, but high-dose treatment for deficiency can occasionally cause low ...

Feeling cold can be due to a deficiency in certain B vitamins or iron, which causes anemia. Vitamin B12 and folate (vitamin B9) deficiencies lead to fewer red blood cells, making you feel cold. If you ...

Hannah Harper is a wellness editor for Health. Previously, she was an associate editor, assistant editor, and editorial assistant for Health. She covers topics on nutrition, women's health, and more.