Recent studies indicate that more than one in four Americans have arthritis, and those rates are on the rise, especially in younger people. Obesity may be behind that rise.
However, they also found that individuals in each successive cohort were more likely to report arthritis than those in older cohorts at the same ages. Modeling the effect of risk factors on the age-cohort model showed that only BMI and smoking were statistically significant.
“The odds of reporting arthritis increased with increasing levels of BMI,” the authors write. “For example, those who were in the severe obese category were 2.5 times more likely to report arthritis than those of normal weight. Furthermore, non-smokers (OR: 0.57, 95% CI: 0.51; 0.66) were less likely to report arthritis than current smokers.”
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