Nutrients · 2024
Serum Homocysteine Levels and All-Cause and Cause-Specific Mortality in Korean Adult Men: A Cohort Study.
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Kim Minyoung, Shin Sujeong, Yoo Eunsol, Kang Jae-Heon, Sung Eunju, Kim Cheol-Hwan, Shin Hocheol, Lee Mi Yeon
Аннотация
BACKGROUND: Hyperhomocysteinemia can increase the risk of cardiovascular disease (CVD), cancer, and neurological disorders; however, hypohomocysteinemia is generally not considered harmful. This study aimed to evaluate the relationship between all levels of homocysteine, both low and high homocysteine levels, and the risk of all-cause and cause-specific mortality in adult Korean men.
METHODS: Adult Korean men (n = 221,356) were categorized into quintiles based on their homocysteine levels. The primary endpoints were all-cause, CVD, cancer, and dementia mortality. Hazard ratios were calculated using Cox proportional hazards models, and the dose-response relationship between homocysteine levels and mortality risk was further explored using restricted cubic spline models.
RESULTS: Compared with the reference category (Q2, 8.8-9.9 µmol/L), there was a significant increase in all-cause mortality associated with both low and high levels after multivariable adjustment (Pinteraction = 0.002). Additionally, in spline regression, a U-shaped association between homocysteine levels and all-cause and CVD mortality was observed (inflection point = 9.1 µmol/L). This association was not observed in the vitamin supplementation subgroup.
CONCLUSION: Among Korean adult men, both low and high homocysteine levels increased the risk of all-cause and CVD mortality, indicating a U-shaped relationship. However, this relationship was not statistically significant with vitamin supplementation, suggesting a potential protective role for vitamins.
METHODS: Adult Korean men (n = 221,356) were categorized into quintiles based on their homocysteine levels. The primary endpoints were all-cause, CVD, cancer, and dementia mortality. Hazard ratios were calculated using Cox proportional hazards models, and the dose-response relationship between homocysteine levels and mortality risk was further explored using restricted cubic spline models.
RESULTS: Compared with the reference category (Q2, 8.8-9.9 µmol/L), there was a significant increase in all-cause mortality associated with both low and high levels after multivariable adjustment (Pinteraction = 0.002). Additionally, in spline regression, a U-shaped association between homocysteine levels and all-cause and CVD mortality was observed (inflection point = 9.1 µmol/L). This association was not observed in the vitamin supplementation subgroup.
CONCLUSION: Among Korean adult men, both low and high homocysteine levels increased the risk of all-cause and CVD mortality, indicating a U-shaped relationship. However, this relationship was not statistically significant with vitamin supplementation, suggesting a potential protective role for vitamins.