MH, Do you have any ideas why my right kidney yells out in pain when I drink fresh juiced pinneapple or apple juice? Does it mean I have clogged kidneys? Is it the sugar? Carrot juice doesn't do it. And, what if anything can I do to correct the problem? It's strange only those fruits do it. Very painful. I get relief when I take kidney herbs of parsley, corn silk, juniper and uva ursi. Pain is gone in minutes after taking. I'll lay off the pinneapple and apples for now. Thanks.