Forgive me if y'all knew this, I didn't. This is from Clark's website. Link is below.
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Each liver cleanse “cures” a different set of allergies suggesting that the liver is compartmentalized—different parts having different duties. It follows that by getting all the stones out all your allergies will disappear. Experience shows this to be true, although it can take two years to carry out such a program.
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Would this maybe be why each flush has different *types* of stones? Like my first flush they were clear neon green smooth spheres & one shriveled calcified stone... #2 they were dark green covered in yellow dust, looking like moon rocks, more roughly shaped. Maybe the difference being that different areas were clearing stones... all else I can think is that it would be an age thing, but how could it pass according to ages? Very Interesting!