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Experts Say High-Calorie Diet Increases Alzheimer’s Risk

Studies have shown a possible link between excessive calorie intake and Alzheimer's disease

IANS

Updated:June 14, 2017, 2:23 PM IST
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Experts Say High-Calorie Diet Increases Alzheimer’s Risk
Risk of Alzheimer's high calorie diets (Image courtesy: AFP Relaxnews)
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Consuming a diet that is high in cholesterol, fat and sugar may influence the development of Alzheimer's disease in people who carry a gene linked to the neurodegenerative disease, a study showed. ApoE4 and ApoE3 are two variants of a gene that codes for a protein, apolipoprotein E, which binds fats and cholesterol. While ApoE4 variant is linked to increased inflammation, Alzheimer's and cardiovascular disease, ApoE3, does not increase the risk for the disease, and is much more common variant. However, not all carriers of APOE4 gene develop the disease, the researchers said.

"Part of what the results are saying is that risk doesn't affect everybody the same, and that's true for most risk factors," said lead author Christian Pike, Professor at the University of Southern California – Davis, adding, "Your genes have a big role in what happens to you, but so does your environment and your modifiable lifestyle factors. How much you exercise becomes important and what you eat becomes important.

For the study, the team placed a group of mice with ApoE4 on a control diet that was 10 per cent fat and seven per cent sucrose, while another group of mice with ApoE4 ate a Western diet that was of 45 per cent fat and 17 per cent sucrose for 12 weeks. A similar test was run on mice with ApoE3.

On the unhealthy diet, both the mice with ApoE4 and those with ApoE3 gained weight and became pre-diabetic. But most significantly, those with ApoE4 on the unhealthy diet quickly developed the signature plaques that obstruct cognition and memory.

Lifestyle changes could play a major role in reducing the likelihood of developing Alzheimer's disease in individuals with this genetic predisposition, the researchers suggested.
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