News today. A trial shows that a urine test can show if you follow "the guidelines" in food. Looks like the intent was to get around the inaccuracy of food questionnaires. A controlled randomized crossover trial too.

What's concerning is they are not measuring health, but adherence to guidelines! Can you imagine pee tests as a condition of treatment or insurance? (I can)

Urine test could reveal if your diet is a threat to your health