Muscle fatigue, muscle weakness, pain in the bones and frequent fractures are the most common vitamin D deficiency
symptoms in women. Other than these, the more serious vitamin
symptoms include unexplained depression, low
levels of energy, constant fatigue, lack of concentration and mood swings. Other serious symptoms of low
vitamin D levels include sleep disorders and other sleep irregularities. The immune system of the woman with low
levels of vitamin D is also very weak.