New research out of Boston suggests that sleep and caffeine may play integral roles in controlling chronic pain flareups.
It’s probably not a huge surprise that sleep is beneficial for controlling chronic pain, as we’ve talked about the restorative benefits of sleep on our blog many times before, but the part about caffeine is interesting. Here’s what the researchers had to say.
Benefits of Sleep and Caffeine
For their study, researchers looked at the effects of sleep (or lack thereof) and caffeine on mice and their pain sensitivity. Researchers began by tracking normal sleep cycles and measuring brain activity, then they began to disrupt this healthy sleep cycle by giving mice toys and activities that entertained them and kept them awake (much like Netflix or our iPads do for humans).
“Mice love nesting, so when they started to get sleepy (as seen by their EEG/EMG pattern) we would give them nesting materials like a wipe or cotton ball,” says Dr. Alban Latremoliere, PhD and pain expert at Boston Children’s Hospital. “Rodents also like chewing, so we introduced a lot of activities based around chewing, for example, having to chew through something to get to a cotton ball.”
Researchers kept mice awake for up to 12 hours in one night or for six hours five nights in a row. They examined that fatigue, stress and pain sensitivity all increased during this time.
“We found that five consecutive days of moderate sleep deprivation can significantly exacerbate pain sensitivity over time in otherwise healthy mice,” says Dr. Chloe Alexandre, a sleep physiologist.
According to researchers, common painkillers did not help mice combat pain, and morphine was less effective in sleep-deprived mice, meaning chronic pain patients who are tired may have to up their morphine dose in order for it to be effective. However, researchers found that caffeine helped to block pain sensitivity.
This led researchers to conclude that a good night’s sleep combined with caffeine during the day (along with other good habits like regular exercise and a healthy diet) may be more effective for managing chronic pain than simply relaying on analgesic medications.
“Many patients with chronic pain suffer from poor sleep and daytime fatigue, and some pain medications themselves can contribute to these co-morbidities,” Dr. Kiran Maski, M.D. at Boston Children’s hospital who studies sleep disorders. “This study suggests a novel approach to pain management that would be relatively easy to implement in clinical care.”
Thomas Cohn, MD
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