from free radical damage, the kind of microscopic wear that slowly turns a tight barrier into a leaky one.
Picture a raincoat with tiny pinholes you cannot see from across the room. The coat still looks fine hanging by the door, but the moment the storm starts, water sneaks through every weak spot.
That is what kidney damage can feel like from the inside: nothing dramatic at first, then suddenly the body is wet where it should be sealed. The urine turns bubbly, the legs feel swollen, and the day
