i'm a little worried about myself!! i have been smoking too much joints and cigarettes for 3-4 years!i was good till last year! but from last 6 months i have lost too much weight and appetite! from last few months i start smoking like at the earliest hour of the day and would end up my day smoking a joint!!i was smoking a pack of cigarettes and 15 joints in a day alone!! and slowly my appetite decreased!! one or maximum two meals a day!and have been doing cocaine on weekends for about 2-3 months!! now i have quit everything but i am unable to gain weight!! and right now i am underweight! i was 73 a year ago and now i am 59!!what to do now? is it the result of drugs or is it some underlying disease? everyone notices that i am weak and shrunken!! what to do now? please help me