Common symptoms of a vitamin B12 deficiency include: Tiredness Lethargy Feeling faint Breathlessness Less common symptoms include: Headaches Heart palpitations Altered taste Loss of appetite Ringing in the ears (tinnitus) Looking pale Sore mouth and tongue If it is left untreated you can end up with longer term problems including: Psychological problems such as depression, confusion, memory problems Nerve problems such as numbness, pins and needles, vision changes and unsteadiness A blood test can indicate if you have a B12 deficiency
The amount and type of melanin a person produces are influenced by genetics, environmental factors, and exposure to sunlight
PMID 18585399
Horowitz MC, Berry R, Holtrup B, Sebo Z, Nelson T, Fretz JA, et al
Bn cnh cn c nhng thnh phn khc: Gelatin, Vegetable Cellulose, cha t hn 2% Silica, Vegetable Magnesium Stearate