Researchers have demonstrated that smoking and regular coffee consumption are linked to an increased risk of several arthritis types, according to findings published in Nutrients.
Osteoarthritis and rheumatoid arthritis degrade cartilage and bone within joints. These conditions contribute to pain and mobility challenges for more than 500 million people worldwide.
In the study, scientists explored whether a cause-and-effect connection exists between varied lifestyle habits and arthritis risk. They employed a Mendelian randomization approach to assess whether genetic variants associated with a fondness for coffee also relate to genetic risk for arthritis. This method helps minimize environmental confounding and focuses on potential direct biological links between coffee use and arthritis risk.
Arthritis presence was measured with magnetic resonance imaging, and the researchers identified a causal link between coffee consumption, smoking, and a higher risk of both osteoarthritis and rheumatoid arthritis.
The included studies were rated as high quality with a low risk of bias, which strengthens confidence in the data and the new analysis results. The findings indicate that individuals who are prone to osteoarthritis or who have already been diagnosed may benefit from reducing tobacco use and moderating coffee intake.
Previously, experts discussed dietary questions related to cardiovascular and joint health, including how many eggs might be appropriate for individuals with high cholesterol.