That makes it difficult to make a clear-cut statement about the value of the product, he said.
"There isn't a clear diet that prevents you from getting Alzheimer's disease or improves your memory," Thies said.
In addition, medical foods for Alzheimer's most likely won't be covered by insurance, he said.
"You are making a judgment without the protections you have when dealing with a medication," Thies said. "You're going to be making a decision using your own funds and we would advise anybody to make sure they understand what the product offers and make sure they understand what it's going to cost."
For more about Alzheimer's disease, visit the Alzheimer's Association.
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