Long-term cannabis use raises risk of lung cancer
Sunday 01 April 2007
Cannabis increases the risk of lung cancer and may cause 5 per cent of cases of the disease in people aged 55 and under, according to a new study being published later this year.
Researchers have found a five-fold increased risk of lung cancer in heavy users of cannabis. They calculate that the risk of developing lung cancer increased by 8 per cent a year for people whose cumulative exposure equated to smoking one joint a day. "Long-term cannabis use increases the risk of lung cancer in young adults, particularly in those who start smoking cannabis at a young age," according to researchers from the Medical Research Institute of New Zealand.
The increased risk is blamed on the tendency of cannabis smokers to inhale deeper and longer than with an ordinary cigarette.
The World Health Organisation in 1997 concluded that cannabis when smoked is twice as carcinogenic than tobacco. Some doctors claim it causes cancers of the lungs, larynx, mouth and oesophagus as well as other chronic lung diseases. Those smoking on a regular basis are thought to be most at risk.
The research adds to the existing evidence that cannabis use can increase the risk of emphysema, chronic bronchitis and lung cancer. This news comes as the debate over the dangers of cannabis - started by this newspaper two weeks ago - continues.
Life & Style blogs
Snapchat got rid of the Best Friends feature and 'stalkers' are upset
Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action
A bottle of wine a day is not bad for you and abstaining is worse than drinking, scientist claims
Taylor Swift’s Twitter and Instagram accounts hacked, apparently by Lizard Squad
Doctors in the dock: Scandal of GPs who get cash from healthcare firms for patient referrals
- 1 Saudi preacher who 'raped and tortured' his five -year-old daughter to death is released after paying 'blood money'
- 2 Michelle Obama highlights harsh restrictions faced by Saudi women after meeting King Salman without wearing a headscarf
- 3 Amal Clooney gives excellent answer to fashion question at European Court of Human Rights
- 4 A bottle of wine a day is not bad for you and abstaining is worse than drinking, scientist claims
- 5 Isis publicly behead man in Syrian town square for 'insulting Allah' as he screams for help
Negotiable: Tradewind Recruitment: Our exclusive client in St Albans Hertfords...
Negotiable: Tradewind Recruitment: Key Stage 2 Teachers needed in Hertfordshir...
£55000 - £58000 per annum: Ashdown Group: A truly exciting opportunity has ari...
£25000 - £28000 per annum + benefits: Ashdown Group: Credit Controller - Londo...