Watch out for Common nutritional deficiency symptoms for each nutrient Iron deficiency - tiredness, fatigue, lack of concentration, shortness of breath, brittle nails, pale skin & low energy Gluta Deficiency- anaemia buildup of acid in the body, frequent infections, seizures, intellectual disability and loss of coordination. B Complex, B12 or Folate deficiency- extreme tiredness, lack of energy(paraesthesia), a sore tongue, mouth ulcers, muscle weakness as well as psychological problems like depression and confusion. D3+k2 deficiency- Fatigue, Bone pain, muscle aches, hair fall, mood changes, blood clots, easy bruising, excessive bleeding from wounds or menstruation, oozing from nose and gums. Biotin deficiency can be identified by the common yet-to-be-looked-out symptoms including hair loss, dry scaly skin, cracking in the corners of the mouth (called cheilitis), the swollen and painful tongue that is magenta (glossitis), dry eyes, loss of appetite, fatigue, insomnia, and depression.