Eating lots of carbs, sugar may raise risk of cognitive impairment, Mayo Clinic study finds

Posted By News On October 16, 2012 - 5:00pm

ROCHESTER, Minn. -- People 70 and older who eat food high in carbohydrates have nearly four times the risk of developing mild cognitive impairment, and the danger also rises with a diet heavy in sugar, Mayo Clinic researchers have found. Those who consume a lot of protein and fat relative to carbohydrates are less likely to become cognitively impaired, the study found. The findings are published in the Journal of Alzheimer's Disease.

The research highlights the importance of a well-rounded diet, says lead author Rosebud Roberts, M.B., Ch.B., a Mayo Clinic epidemiologist.

"We think it's important that you eat a healthy balance of protein, carbohydrates and fat, because each of these nutrients has an important role in the body," Dr. Roberts says.

Researchers tracked 1,230 people ages 70 to 89 who provided information on what they ate during the previous year. At that time, their cognitive function was evaluated by an expert panel of physicians, nurses and neuropsychologists. Of those participants, only the roughly 940 who showed no signs of cognitive impairment were asked to return for follow-up evaluations of their cognitive function. About four years into the study, 200 of those 940 were beginning to show mild cognitive impairment, problems with memory, language, thinking and judgment that are greater than normal age-related changes.

Those who reported the highest carbohydrate intake at the beginning of the study were 1.9 times likelier to develop mild cognitive impairment than those with the lowest intake of carbohydrates. Participants with the highest sugar intake were 1.5 times likelier to experience mild cognitive impairment than those with the lowest levels.

But those whose diets were highest in fat -- compared to the lowest -- were 42 percent less likely to face cognitive impairment, and those who had the highest intake of protein had a reduced risk of 21 percent.

When total fat and protein intake were taken into account, people with the highest carbohydrate intake were 3.6 times likelier to develop mild cognitive impairment.

"A high carbohydrate intake could be bad for you because carbohydrates impact your glucose and insulin metabolism," Dr. Roberts says. "Sugar fuels the brain -- so moderate intake is good. However, high levels of sugar may actually prevent the brain from using the sugar -- similar to what we see with type 2 diabetes."

Source: Mayo Clinic

I don't think so. How about all the additives in our food, preservitives, coloring, articficial flavorings, etc. I processed on a cattle crew and sometimes there were so many "growth" implants in their ear that we had to go to the other ear. And what about the modified grains and veggies. We dont eat real food anymore just the fake crap!!!!

I agree with the person that stated the fact that the food has so many chemicals...we don't know what we are eating. Alzheimers seems to be worse than ever. Behavioral problems in children are much worse than they ever used to be. Why doesn't the FDA make packing houses put a label on the meat to tell people everything they are ingesting.
I also have to agree with the sugar intake. Diabetics can get cranky, disoriented and act drunk because of their insulin.
When we go into nursing homes and see the CRAP those people eat it makes me wonder how much of their problem is food related.

We have allowed ourselves to poison the food sources, the soil and atmosphere. The best and most ideal diet would be totally organic, which, in most cases for most people, is econmically not feasible, but anything we consume in excess can have ill effects on us. As far as what causes Alzheimer's is still in question. What was thought to be true about a certain protein affecting the brain just a few years ago has changed to a different type protein affecting the brain in a different way. Until we know for certain what the causes Alzheimer's, we are still guessing how to prevent it, let alone cure it.