• Teymoor Yary and Jussi Kauhanen.
• The University of Eastern Finland, Institute of Public Health and Clinical Nutrition, Kuopio, Finland. Electronic address: Nutcanada@gmail.com.
• Nutrition. 2019 Feb 1; 58: 36-39.

ObjectivesMagnesium may play an important role in the prevention or treatment of epilepsy. We aimed to examine the association between dietary intake of magnesium and the incidence of epilepsy in middle-aged Finnish men in a prospective setting. As a secondary analysis, we also considered a possible association between dietary intake of magnesium and inflammation in subjects with epilepsy.MethodsThe study included 2442 men, ages 42 to 60 y, from the prospective Kuopio Ischaemic Heart Disease Risk Factor Study who were free of epilepsy at baseline between 1984 and 1989. Dietary intake of magnesium was assessed with a 4-d food record. The hospital discharge diagnosis of epilepsy was used as an outcome variable.ResultsDuring the average follow-up period of 22.4 y, 74 men (3%) developed epilepsy. Those who followed the recommended dietary intake (>350 mg/d) of magnesium had a lower risk of epilepsy (hazard ratio [HR]: 0.52; confidence interval [CI], 0.28-0.99; P = 0.045) after multivariate adjustments. However, the risk was not significant after adjustment for C-reactive protein (CRP). We also found that CRP concentration was directly associated with the risk of epilepsy (HR: 1.24; CI, 1.00-1.54; P = 0.048). This association was attenuated after adjustment for dietary intake of magnesium and no longer significantly associated with the risk of epilepsy (HR: 1.22; CI, 0.99-1.52; P = 0.07).ConclusionsA higher dietary intake of magnesium was associated with lower incident epilepsy, and this association was slightly mediated by CRP. Further studies are required to identify the potential mechanisms.Copyright © 2019 Elsevier Ltd. All rights reserved.

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