hm....from what i know from my lecturer, a prof in HUKM( he's our very high status lecturer in medical faculty), he said that that JAMU is actually not good for health. i don't know what exactly is wrong with it, forgot liao! (something to do with cancer or dunno what ....really forgot liao..
but it's really not good for health.
maybe u can try to search some info in net.....

relax.... it's all depends on u to decide whether u want to carry on ur JAMU or not. i'm just stating wat my doctor/ lecturer said to me. ( FYI,he's a malay prof in our neurology department of medicine faculty, he's very brilliant type, not those stupid stupid nerd nerd type de) the fact is, i don't even know what is JAMU! it's just something that he told us during his lecture and told us it's better that we don't eat it....i'm not sure it's cancerous or not...but he just stated that it's not good for us(which i already forgot what it is, all i remember is it'll cause significant side effect to our body in a long run) that's y i say it's better for u to go check it out in internet or what for ur own good.
i myself is a medical student but i use chinese traditional medicine as well. i don't look down on those traditional medicine. i even use "bai fung wan" (a chinese med for decades and lots of ppl were/ are using....even my relatives and mum)to regulate my period. before taking that, i'll have very painful and uneasy period, (back pain, headache, stomach ache, nausea, vomiting---everything)with irregular menstrual cycle somemore. then after taking it for about two months, all these things gone and my period is right on time. i was so happy with it..... just too bad that after half a year, singapore claimed that it has excessive toxin. only then our beloved government start to check the stuff in malaysian and claimed to have excessive toxin as well. singapore stopped all those drugs but malaysia still can sell it. however, i don't buy it anymore.... and now, all those painful experience come back to me again.
it's all depends on u whether u want to carry on or not, i'm sorry if i 'menyinggung perasaan' u, but i don't mean rude. hope u understand