Gene-vegetarianism interactions in calcium, testosterone, and eGFR identified in genome-wide analysis across 30 biomarkers

Author:

Francis MichaelORCID,Ye KaixiongORCID

Abstract

AbstractExisting vegetarian cohort studies have not considered the effects of genetic differences on health outcomes. First, we reduced inconsistencies among self-identified vegetarians in UK Biobank by utilizing two dietary surveys. Vegetarians were matched 1:4 with nonvegetarians for traditional association analyses, revealing significant effects of vegetarianism in 15/30 biomarkers. Cholesterol measures plus Vitamin D were significantly lower in vegetarians, while triglycerides were higher. A genome-wide association study revealed no genome-wide significant (GWS) associations with vegetarianism status. We performed genome-wide gene-vegetarianism interaction analyses for 30 biomarker traits (N=147,253). We detected a GWS interaction in calcium at rs72952628 (P=4.47×10−8). rs72952628 is inMMAA, a B12metabolism gene; B12has high deficiency potential in vegetarians. Gene-based interaction tests revealed two significant genes,RNF168in testosterone (P=1.45×10−6) andDOCK4in eGFR (P=6.76×10−7), which have previously been associated with testicular and renal traits, respectively. These findings indicate genotype can influence biomarker levels across vegetarians.

Publisher

Cold Spring Harbor Laboratory

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