Limiting Sugary Foods: A Key Strategy to Lower Dementia Risk

In a growing concern for public health, research has increasingly suggested that dietary choices can significantly influence cognitive health and the risk of developing dementia. According to a study published in the Journal of Alzheimer's Disease in 2023 by Agarwal et al., high added sugar intake is linked to an increased risk of Alzheimer's disease, which accounts for 60% to 70% of dementia cases worldwide (Agarwal P, Ford CN, Leurgans SE, et al., 2023). This finding underscores the importance of dietary management in dementia prevention strategies.

The World Health Organization reports that over 55 million people globally are currently living with dementia, a figure that is projected to rise as the population ages. As individuals over the age of 65 are most susceptible to cognitive decline, addressing modifiable risk factors such as diet becomes crucial (World Health Organization, 2022).

Dietitians advocate for a balanced approach to nutrition that prioritizes brain health. Lauren Manaker, M.S., RDN, LD, CLEC, emphasizes that while no single food can guarantee immunity from dementia, reducing the intake of highly-sweetened foods, particularly candies, is a prudent step. "Candies are not your brain's friend," says Manaker, referencing a study that indicates consuming excessive added sugar can more than double the risk for dementia (Manaker L., EatingWell, 2025).

The mechanism behind this correlation is thought to involve insulin resistance and high blood sugar levels, both of which are significant risk factors for Alzheimer’s disease. Research conducted by Dhana et al. in 2021 found that each additional 10 grams of added sugar consumed daily corresponds to a 1.3% to 1.4% increase in the risk of developing Alzheimer's (Dhana K, James BD, Agarwal P, et al., 2021).

Experts recommend the MIND diet, which focuses on brain-healthy foods, including whole grains, nuts, berries, vegetables, and healthy fats such as olive oil while limiting items high in saturated fats and added sugars (Moon M., M.S., RDN, EatingWell, 2025). This dietary model has been shown to support cognitive function and may help mitigate the risk of neurodegenerative diseases.

Furthermore, lifestyle factors play a significant role in maintaining cognitive health. Regular physical activity, social engagement, and managing chronic diseases such as hypertension and diabetes are also critical components of a holistic approach to reducing dementia risk (Centers for Disease Control and Prevention, 2023).

In conclusion, while limiting candy and other sugary foods is an essential step toward supporting brain health, it is part of a broader strategy that includes various lifestyle modifications. Adopting a comprehensive approach can enhance cognitive resilience and potentially reduce the risk of dementia as individuals age. As further research unfolds, ongoing education on dietary and lifestyle choices will remain vital in the fight against this debilitating condition.