Vegetable Intake Effect on Heterocyclic Amine Metabolism

This is a dataset of urinary metabolomics from a randomized trial with crossover design, where each participant underwent four study phases with a different test meal at the end of each phase. Every phase consisted of subjects consuming for six days their normal diet excluding cruciferous and apiaceous vegetables, alcohol, and caffeine. The participants refrained from meat products for 24 hours prior to the test meal. On day seven of each phase and after an overnight fast, subjects were randomly assigned to eat one of four meals:

grilled hamburger with no vegetables
grilled hamburger with steamed broccoli and Brussels sprouts
grilled hamburger with steamed parsnips, fresh parsley, and celery sticks
grilled hamburger with steamed broccoli, Brussels sprouts, and parsnips plus fresh parsley and celery sticks