When deficiency of these vitamins is detected, the inadequacy of the nutrition is confirmed. In this case, it is important to determine the reason for the deficiencies. It should be studied whether there is inaccurate nutrition or any disease.
Inadequate vitamin intake may cause many non-specific complaints. Therefore, it is not easy to distinguish the deficiencies based on the complaints.
Deficiency of these may generally cause frequently recurrent infections due to the weakness of the immunity system; depressive situation; weakness; fatigue; heartbeats; difficulty in breathing; dizziness; skin problems such as eczema and dermatitis; decrease in resistance to the effect of ageing; increase in probability of cardiovascular diseases; and many other problems.