Smoking and your MSK health
Nicola Tik
Most people know that smoking affects the lungs and heart. Its effect on muscles, joints, and bones is less talked about, but it is significant and worth understanding, particularly if you are managing any kind of MSK condition or recovering from an injury.
Smoking reduces the body's ability to absorb calcium and interferes with the activity of the cells responsible for building and maintaining bone density. Over time this contributes to a gradual reduction in bone strength, making bones more susceptible to stress fractures and slowing recovery after any bone injury.
This effect is cumulative and relates to duration and amount of smoking rather than being an all or nothing relationship. Bone density also responds positively to stopping smoking, so the picture is not fixed.
Nicotine causes the small blood vessels that supply muscles, tendons, and ligaments to narrow. This reduces the oxygen and nutrient delivery that these tissues rely on for repair and recovery. The result is that soft tissue injuries, whether a tendon strain, a ligament sprain, or post-surgical recovery, take longer to heal in people who smoke compared to those who do not.
For anyone managing a persistent MSK condition, this reduced healing capacity means that the body has less ability to recover between physical demands, which can contribute to symptoms feeling more persistent or harder to shift.
Research suggests that smoking is associated with increased pain sensitivity over time. The mechanisms are not entirely straightforward, but nicotine's effect on the central nervous system appears to lower the threshold at which the body registers discomfort. This is one reason why people who smoke tend to report higher pain levels for the same degree of tissue change compared to non-smokers.
This is worth knowing not as a reason for self-criticism, but because it helps explain why stopping smoking can have a meaningful effect on how pain feels, sometimes more quickly than people expect.
The most impactful change for MSK health is stopping smoking, and support to do so is worth seeking out. In the meantime, staying physically active supports bone density, circulation, and soft tissue health in ways that partially offset some of smoking's effects. Regular gentle movement, adequate nutrition, and managing sleep all support the body's recovery capacity alongside any steps taken to reduce or stop smoking.