In men, iron intake also had direct negative effects on mtDNAcn ( B −0.120, 95% CI −0.236 to −0.004), but the mediation of these indirect effects by TNF α did not reach statistical significance ( Figure 4(b) ).
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Sex-Specific Negative Association between Iron Intake and Cellular Aging Markers: Mediation Models Involving TNF<i>α</i>.
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The sentences
The serum TNF α level was higher in women (borderline significant) and the serum SOD level was not different between the two groups.