I wash my hands 45x per day. so worried as i use hand wash with trihalomethanes in which can cause cancer? other times pure soap mostly. large risk?

Stop worrying: Despite the government-inspured hoopla, the best epidemiological studies somehow no measurable risk from these. Like almost everything else, these can cause abnormalities in lab animals -- the colb crypt model also is the one used to claim eating meat causes cancer. The Mae compounds are present in infinitesimal amounts in soap and the benefits of washing are of course enormous.