Researchers found that people who smoke soon after waking are at greater risk for cancer.
Two recent studies report very similar findings.
One study involved 7,611 smokers- 4,776 were smokers with lung cancer and 2,835 were smokers without cancer.
This study found that the patients who smoked within 30 minutes of waking were 79% more likely to develop cancer than those who waited at least at hour.
The second study involved participants with neck and head cancers.
Smoking is also a major risk factor for non-communicable diseases such as heart disease, strokes and respiratory diseases.
The findings of these studies are not reasons to ignore smoking cessation.
Patients on a test run for quitting are advised to delay the first cigarette of the day to help them quit the habit.