Which of the following is true about the relationship between nutrition and Alzheimer's disease?

• A. High intake of saturated fats is associated with a decreased risk of Alzheimer's disease.
• B. A balanced diet rich in antioxidants may help reduce the risk of developing Alzheimer's disease.
• C. Alzheimer's disease can be completely prevented by dietary changes alone.
• D. There is no evidence that nutrition has any effect on Alzheimer's disease risk.

Answer: (B)

Verified step by step guidance

1. Understand the context of Alzheimer's disease: Alzheimer's is a neurodegenerative disorder characterized by progressive memory loss and cognitive decline. While its exact causes are not fully understood, research suggests that lifestyle factors, including nutrition, may influence risk.
2. Evaluate the role of saturated fats: High intake of saturated fats has been linked to increased inflammation and oxidative stress, which are factors that may contribute to neurodegeneration. Therefore, the claim that saturated fats decrease Alzheimer's risk is not supported by current evidence.
3. Examine the role of antioxidants: Antioxidants, found in fruits, vegetables, and other nutrient-rich foods, help combat oxidative stress by neutralizing free radicals. Oxidative stress is a known contributor to cellular damage in the brain, which may increase Alzheimer's risk. A balanced diet rich in antioxidants is supported by research as potentially reducing this risk.
4. Clarify the limitations of dietary changes: While nutrition can play a role in reducing risk factors, Alzheimer's disease is influenced by a combination of genetic, environmental, and lifestyle factors. Dietary changes alone cannot completely prevent the disease.
5. Address the claim about no evidence: There is substantial evidence from scientific studies indicating that nutrition, particularly diets rich in antioxidants and low in saturated fats, can influence Alzheimer's disease risk. Therefore, the claim that nutrition has no effect is incorrect.