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7 And those who have smoked more than a pack daily or smoked for more than 30 years have a 48% increased rectal cancer risk

Plus, a parent may smoke cigarettes

Embrace this sign as an opportunity for profound personal growth and transformation

Also, people who smoked at the time of colon cancer diagnosis were 47 percent more likely to have a recurrence of colon cancer or to die from the disease

Correction 20 May 2025: This article has been updated to amend the description of Dr Misra-Sharp and replace a reference to a 90% five year mortality rate for lung cancer with figures from Cancer Research which explain that around 20% of people in England with lung cancer will survive for 5 years or more