kidney tissue. When inflammation swells the glomeruli, those microscopic filters swell open and protein starts leaking out; vitamin D helps cool that internal blaze and quiet the pressure that keeps the leak going.
Think of your kidney filter like a coffee cone that has been bent out of shape. Water still passes through, but the grounds start escaping too, and suddenly the cup is full of grit instead of clean liquid.
That is why people with foamy urine often notice more than just a strange toilet bowl. Their ankles feel
