Thanks for your query. As you mentioned rightly your lead levels are on the higher side. Lead toxicity may lead to encephalopathy
characterised by mood swings and behavioural abnormalities. I would suggest MRI-Brain as it is likely to demonstrate the changes.
However, increased lead levels may not lead to hunger though during stages of encephalopathy it might be a presenting symptom. I would suggest you take adequate precautions from lead poisoning
considering it an occupational hazard for you. A thorough psychiatric evaluation is recommended in your case. Wish you good health.