TB is curable but residual dsmage to lungs remain...so will need chest physiotherapy If sputum has TB organism then can spread through cough...with treatment this reduces Eat protein rich diet

Hello there.  I can understand your concern.  Yes he will become normal with proper treatment. Taking the whole course of anti tubercular medications is very important.  Altough his lung functions might not return to the full capacity. You can give him a high protein diet along with fruits and vegetables and greens. Best regards. Dr. Anil kumar jain. Bangalore.