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Magnesium intake and primary liver cancer incidence and mortality in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial
Author(s) -
Zhong GuoChao,
Peng Yang,
Wang Kang,
Wan Lun,
Wu YouQiLe,
Hao FaBao,
Hu JieJun,
Gu HaiTao
Publication year - 2020
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.32939
Subject(s) - medicine , hazard ratio , incidence (geometry) , confidence interval , proportional hazards model , population , cohort study , surgery , environmental health , physics , optics
Epidemiological studies on magnesium intake and primary liver cancer (PLC) are scarce, and no prospective studies have examined the associations of magnesium intake with PLC incidence and mortality. We sought to clarify whether higher magnesium intake from diet and supplements was associated with lower risks of PLC incidence and mortality in the US population. Magnesium intake from diet and supplements was evaluated through a food frequency questionnaire in a cohort of 104,025 participants. Cox regression was employed to calculate hazard ratios for PLC incidence and competing risk regression was employed to calculate subdistribution hazard ratios for PLC mortality. Restricted cubic spline regression was employed to test nonlinearity. We documented 116 PLC cases during 1,193,513.5 person‐years of follow‐up and 100 PLC deaths during 1,198,021.3 person‐years of follow‐up. Total (diet + supplements) magnesium intake was found to be inversely associated with risks of PLC incidence (hazard ratio tertile 3 vs . 1 : 0.44; 95% confidence interval: 0.24, 0.80; p trend = 0.0065) and mortality (subdistribution hazard ratio tertile 3 vs . 1 : 0.37; 95% confidence interval: 0.19, 0.71; p trend = 0.0008). Similar results were obtained for dietary magnesium intake. Nonlinear inverse dose–response associations with PLC incidence and mortality were observed for both total and dietary magnesium intakes (all p nonlinearity  < 0.05). In summary, in the US population, a high magnesium intake is associated with decreased risks of PLC incidence and mortality in a nonlinear dose–response manner. These findings support that increasing the consumption of foods rich in magnesium may be beneficial in reducing PLC incidence and mortality.

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