06/13/2023
The relationship between sleep and cancer is a complex one. There is evidence that both short-term and long-term sleep disruptions can increase the risk of some cancers, while getting enough sleep can help improve cancer outcomes.
Short-term sleep disruptions
Short-term sleep disruptions, such as those caused by jet lag or shift work, can increase the levels of certain hormones that promote tumor growth. For example, one study found that people who worked night shifts had a 20% higher risk of developing colorectal cancer than those who worked during the day.
Long-term sleep disruptions
Long-term sleep disruptions, such as those caused by insomnia or sleep apnea, can also increase the risk of cancer. For example, one study found that people with insomnia had a 40% higher risk of developing breast cancer than those who did not have insomnia.
Sleep and cancer treatment
Getting enough sleep is also important for people who are undergoing cancer treatment. Cancer treatment can disrupt sleep in a number of ways, including:
Side effects of medications, such as fatigue, nausea, and vomiting
Pain
Anxiety and depression
Stress
Sleep deprivation can make it harder to cope with cancer treatment, and it can also lead to complications such as infections and weight loss.
Sleep and cancer outcomes
Getting enough sleep may also help improve cancer outcomes. For example, one study found that people with breast cancer who slept for at least 7 hours per night had a better chance of survival than those who slept for less than 7 hours per night.
Tips for improving sleep
If you are having trouble sleeping, there are a number of things you can do to improve your sleep habits. These include:
Stick to a regular sleep schedule and wake up at the same time each day, even on weekends.
Create a relaxing bedtime routine.
Avoid caffeine and alcohol before bed.
Exercise regularly, but not too close to bedtime.
Make sure your bedroom is dark, quiet, and cool.
See a doctor if you have a sleep disorder.
Improving your sleep habits can help reduce your risk of cancer, improve your quality of life, and make it easier to cope with cancer treatment.