The UK will next week become the first European country to introduce graphic images on cigarette packets to warn about the dangers of smoking.
The 15 different images will include pictures of a diseased lung and heart surgery being performed.
They will start to be introduced on 1 October, but it will be another year before all packets contain them as existing stock will have to be sold.
The images will replace the written warnings that started in 2003.
And other tobacco products will be expected to follow suit by 2010.
The Department of Health said the written warnings had been a success with research showing more than 90,000 smokers had been motivated to call the NHS quit line because of them.
These new stark picture warnings emphasise the harsh health realities of continuing to smoke.
But officials said it was time to take a tougher approach after progress made in countries that have already introduced them.
Canada became the first nation to use images in 2001 with surveys one year on showing a third of quitters had been motivated by the images.
Similar warnings are also used in Australia, Brazil, New Zealand and Singapore, prompting the EU to encourage European countries to act.
Chief medical officer Sir Liam Donaldson said: "Written health warnings have encouraged many smokers to stop.
"These new stark picture warnings emphasise the harsh health realities of continuing to smoke."
And Deborah Arnott, director of anti-smoking campaign group Ash, added: "The introduction of picture warnings on tobacco products is a strong visual reminder of the horrendous illnesses caused by smoking and the evidence is that they work."
But Simon Clark, of smokers' lobby group Forest, said smokers were being "unfairly" targeted, pointing out images are not being introduced on drinks.
"There will be a little impact in the short-term, but in the long-term they will just become wallpaper and be ignored.
Warnings on packets did not make one bit of difference for me I already knew they were bad for me and I doubt pictures would have bothered me either. What they should have on packets is advice on how to find sites like this plus contact numbers that people could ring for advice on how to quit.