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From: Johnathan (
Subject:         Re: Soy's aluminum content and Alzheimer's
Date: May 27, 2011 at 7:54 pm PST

In Reply to: Re: Soy's aluminum content and Alzheimer's posted by Jeff Novick, MS, RD, LD, LN on April 8, 2009 at 7:32 am:

And the issue with the aluminum, it occurs in soy as a result of an industrial processing step. This occurs only when producers use harsh alkaline soaking solutions that leach aluminum from aluminum processing equipment. Not all soy processing uses alkaline soaking solutions and not all soy is produced using aluminum equipment. Harsh alkaline soaking solutions are used mainly in the production of modern soy foods such as soy protein isolates, soy protein concentrates, soy supplements, soy protein shakes, textured soy protein (TSP), etc. Name brands like Edensoy does not use alkaline soaking solutions and does not use aluminum equipment.

Studies indicate the aluminum content of soy formula may be 10 times higher than cow’s milk formula, and that the content of cow’s milk formula is about 5 times higher than human milk. However, despite the higher aluminum concentration, serum aluminum levels in breast fed infants do not differ significantly from levels in infants fed soy formula. And in neither case, do they come close to the serum aluminum levels known to be associated with toxicity in adults. These findings strongly suggest, but do not prove, that aluminum exposure from the use of soy formula is unlikely to be problematic. Tissue concentrations of aluminum would likely provide more insight than serum levels. Interestingly, one study did find significantly elevated serum levels in infants fed a casein-hydrolyzed formula.

Aluminum from infant formula is not of a concern for individuals with normal kidney function, since the human body absorbs very little aluminum, and that which is absorbed is excreted by the kidney and eliminated via the urine. However, infants with impaired renal function may have a high concentration of aluminum in the brain.

3.) Freundlich M, Zilleruelo G, Abitbol C, Strauss J, Faugere MC, Malluche HH. Infant formula as a cause of aluminium toxicity in neonatal uraemia. Lancet 1985; 2:527-9.
4.) Freundlich M, Zilleruelo G, Strauss J, Abitbol C, Malluche HH. More on aluminum toxic effects in children with uremia. J Pediatr 1990; 117:1007-9.
5.) Litov RE, Sickles VS, Chan GM, Springer MA, Cordano A. Plasma aluminum measurements in term infants fed human milk or a soybased infant formula. Pediatrics 1989; 84:1105-7.
6.) Weintraub R, Hams G, Meerkin M, Rosenberg AR. High aluminium content of infant milk formulas. Arch Dis Child 1986; 61:914-6.
7.) Hawkins NM, Coffey S, Lawson MS, Delves HT. Potential aluminium toxicity in infants fed special infant formula. J Pediatr Gastroenterol Nutr 1994; 19:377-81.

there is no known biological function for aluminum but the adverse health effects of aluminum have received attention in two areas related to soy intake – one is infant health and the other is Alzheimer’s disease.

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