In a crossover study, volunteers were fed two diets of near- identical phosphate content, one of which was rich in meat and animal products, the other being quasi-vegan (5% of protein of animal origin). After 7 d on each diet, plasma FGF23 levels averaged 101 and 61 pg/mL, respectivelyd40% lower on the quasi-vegan regime [90]. Also, 24-h urinary phosphate excretion was 29% lower on the quasi-vegan dietdbearing out its lower phosphate bioavailability. Moreover, in a recent cross-sectional study focusing on patients with CKD, the proportion of dietary protein derived from plant sources correlated inversely with serum FGF23 [91]. Increasing the proportion of plant products in a diet appears to be a practical and health-compatible way to moderate dietary phosphate absorption.