Vitamin B12 is an essential nutrient that's often overlooked. Also known as cobalamin, vitamin B12 helps your body produce vital red blood cells and boost your energy levels, among other things.

Feeling extra fatigued lately? There are lots of reasons why you may not have the usual pep in your step—from overtraining to underfuelling to poor sleep habits that are hampering your recovery. But ...

Official NHS guidance also cautions that vitamin B12 deficiency can lead to breathlessness, digestive discomfort, reduced ...