Abstract
Based on the association between sarcopenia and the risk of developing cardio-cerebrovascular disease (CCVD) established by a meta-analysis by Fang et al.(Biosci Trends. 2023; 17:293-301), we have used Mendelian randomization (MR) analysis to test the authenticity and accuracy of such an association. In this MR study, appendicular lean mass, handgrip strength, and walking pace were used as sarcopenia-related traits, with cardiovascular diseases and stroke set as outcomes of CCVD. MR analysis was performed using inverse-variance weighting, the MR Egger, weighted median, simple mode, and weighted mode. No heterogeneity or horizontal pleiotropy in MR estimates was observed (Cochran's Q P value > 0.05, MR-PRESSO global test P value > 0.05, and MR-Egger intercept P value > 0.05). Results of that analysis proved a causal relationship between sarcopenia-related traits and cardio-cerebrovascular disease, with a causal association between appendicular lean mass and cardiovascular diseases and an inverse causal relationship between appendicular lean mass and stroke. However, such a relationship was absent in the case of handgrip strength and the risk of cardiovascular diseases as well as in the case of walking pace and lacunar/ischemic stroke. Therefore, the effect of sarcopenia on CCVD should be carefully explained.
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