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. 2024 Oct;43(10):3089-3104.
doi: 10.1007/s10067-024-07092-2. Epub 2024 Aug 4.

Joint effect of rheumatoid arthritis and diet quality on cardiovascular and mortality outcomes: insights from the Women's Health Initiative

Kanika Malani  1 , Sushaili Pradhan  2 , Mary Roberts  2 , Nazmus Saquib  3 , Linda Snetselaar  4 , Aladdin Shadyab  5 , Charles B Eaton  2   6   7
Affiliations

Joint effect of rheumatoid arthritis and diet quality on cardiovascular and mortality outcomes: insights from the Women's Health Initiative

Kanika Malani et al. Clin Rheumatol. 2024 Oct.

Abstract

Objectives: This study aimed to examine the combined impact of diet quality and rheumatoid arthritis (RA) on development of cardiovascular and mortality outcomes among postmenopausal women.

Methods: A total of 99,840 women without baseline RA and 10,494 women with baseline RA were prospectively followed for an average of 12.7 years through the Women's Health Initiative. Diet quality was evaluated using food frequency questionnaires and the Healthy Eating Index 2015. Cardiovascular and mortality outcomes were identified through study follow-up. Four patient groups were used: Reference Group (no RA and healthy diet), Group 1 (no RA and unhealthy diet), Group 2 (RA and healthy diet), Group 3 (RA and unhealthy diet). Data was analyzed using multivariable Cox proportional regression models.

Results: After adjustment for confounders, Groups 1 and 3 developed significantly more cardiovascular disease (CVD), coronary heart disease, and incident stroke as compared to the reference. All groups developed more CVD-related mortality and all-cause mortality as compared to the reference. Among patients who already have RA, the incidence of these poorer cardiovascular outcomes does not significantly increase based on diet quality.

Conclusion: While healthy diet quality is associated with reduced adverse cardiovascular and mortality outcomes, RA overpowers the benefits that may be attained through a healthy diet, resulting in the fact that diet quality does not significantly change cardiovascular and mortality outcome incidence in those who already have RA. Conversely, in those who do not have RA, the benefits of a healthy diet are realized with significant reduction of adverse cardiovascular and mortality outcomes as compared to those with an unhealthy diet. Key Points •Healthy diet quality is associated with reduced adverse cardiovascular and mortality outcomes. •RA is associated with increased adverse cardiovascular and mortality outcomes. •While diet quality does not significantly change cardiovascular and mortality outcomes in those who already have RA, those without RA experience significant reduction of these adverse outcomes by adhering to a healthy diet.

Keywords: Cardiovascular disease; Coronary heart disease; Diet; Lifestyle; Menopause; Mortality; Nutrition; Rheumatoid arthritis; Stroke; Women.

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