Conversation: The conversation between human and AI assistant.
[|Human|] my dad is a really nice person but he smokes and drink alot, he drink alot of back label, i overheard him talkin to my mum about him having lungs of a 70 yr old although he is only 40. also he sd he has high risk, can u please fully explain what is happening, and what small things i can do to chnge this and make him healthier please
[|AI|]  Hi welcome to Chat Doctor.... Your father having smoking and alcohol history. .... Both are injurious to health ..... Esp smoking injurious to lung ..... Smoking can lead ......1. Emphysema like obstructive lung disease 2.pulmonary fibrosis 3. Idiopathic interstitial fibrosis These last two are restrictive lung disease. . So your father might have one of above disease ... Chest x-ray and spirometry needed for it ... If needed steroid and bronchodilator like treatment might be needed .... Smoking moreover release elastane which damage lung elastic tissue. ... So smoking should be stopped ... Consult him to pulmonologist .... Hope your concern solved ...