Study Links 6 Sweeteners to 62% Faster Cognitive Decline in 12,772 Adults

Q: If sweeteners may carry risks and sugar has harms too, what should people actually use to cut sweetness without hurting long-term brain health?

The safest practical move is not to swap sugar for lots of artificial sweeteners, but to retrain your diet to be less sweet overall and get sweetness mainly from whole foods. This new Brazil study only shows an association, not proof, but it adds to wider evidence that both heavy added sugar and heavy sweetener use may be unwise. For drinks, water should be the default. Unsweetened coffee, tea, sparkling water, and milk or unsweetened fortified dairy alternatives are the best everyday replacements for sugary sodas and heavily sweetened “diet” drinks. If you need sweetness, use small amounts and treat low- or no-calorie sweeteners as a transition tool, not a staple. For foods, fruit is the best way to cut sweetness without giving it up entirely. Berries, apples, bananas, and unsweetened fruit purées can sweeten yogurt, oatmeal, and some baking while also adding fiber and nutrients. Whole fruit is preferable to juice, syrups, honey, coconut sugar, or date sugar, which are still forms of sugar and can raise intake quickly. What matters most for long-term brain health is the overall eating pattern. The strongest evidence supports diets such as the MIND or Mediterranean style: more leafy greens, beans, whole grains, nuts, olive oil, fish, and berries; fewer pastries, sugary drinks, fried foods, and ultra-processed snacks. That approach lowers reliance on both sugar and sugar substitutes while aligning with the best available evidence on cognitive aging.

3 articles · Updated · ScienceDaily · Oct 29

12,772 Brazilian adults tracked for about eight years showed 62% faster decline in memory and thinking skills in the highest sweetener-intake group than in the lowest, equal to roughly 1.6 extra years of cognitive aging.
191 mg a day of sweeteners—about one can of diet soda if consumed as aspartame—marked the high-intake group; even the middle group showed a 35% faster decline after adjustments for age, sex, hypertension and cardiovascular disease.
Six of seven sweeteners—aspartame, saccharin, acesulfame-K, erythritol, sorbitol and xylitol—were linked to faster decline, while tagatose was not associated with worse outcomes in this study.
Adults under 60 and people with diabetes showed stronger links, a notable finding because diabetics often use sugar substitutes to cut sugar intake.
The Neurology study was observational and based on self-reported diets, so it found association rather than proof that artificial sweeteners cause brain aging.

Sources

ScienceDaily4h ago

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Real Simple4h ago

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ultrabotanica.com1d ago

Sugar and Aging: How Glycation Affects Aging – Ultra Botanica

4 Sources

Do sugar substitutes protect health—or speed brain aging? A Brazilian study links six common sweeteners to faster memory decline, but is the real culprit something else?

If sweeteners may carry risks and sugar has harms too, what should people actually use to cut sweetness without hurting long-term brain health?