Researchers found that people who smoke within the first 30 minutes of waking up are 79 percent more likely to have lung cancer than people who wait at least an hour after getting up to smoke.
Research suggests that people who were quick to smoke may inhale more smoke into the lungs.
The study showed that people who smoked first thing in the morning also have a 59 percent higher risk of head and neck cancers compared to smokers who wait a bit after waking.
