The scientists, headed by Prof. Michael Ovadia of the zoology department in the life sciences faculty, have isolated a substance from the cinnamon plant, referred to as CEppt, which inhibited the disease in laboratory mice.
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They also found the extract helped in breaking up already formed amyloid fibers. "This finding indicates the possibility that the substance may not only prevent AD, but can cure it, after Alzheimer-causing molecules have already been formed," says Ovadia.
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However, if you're rushing to use cinnamon, Ovadia warns of over consumption. In large doses the spice could harm liver functions, due to a component called cinnamaldehyde. The recommendation is not to exceed 10 grams of cinnamon a day, he says.
Tel Aviv University took out a patent on the extract and its attributes as a food supplement back in 2004.
http://www.haaretz.com/print-edition/news/tau-finds-cinnamon-could-combat-alzheimer-s-1.366678-----------------
I've read elsewhere to limit cinnamon to a 1/4 teaspoon a day and only consume regular powdered dry cinnamon as opposed to essential oils (the extract that Tel Aviv University created is not something found in health food stores). The following link explains why too much cinnamon is dangerous due to coumarin which can harm the liver.
http://www.bfr.bund.de/en/selected_questions_about_coumarin_in_cinnamon_and_other_foods-8487.htmlHowever there is a fair amount of research, apart from the research from TAU, to show that cinnamon when taking moderately has a number of health benefits.
http://www.whfoods.com/genpage.php?tname=foodspice&dbid=68