It sounds like you’re referring to artificially sweetened drinks, especially diet sodas.
Large observational studies have found that regular consumption of artificially sweetened beverages (like diet soda) is associated with a higher risk of stroke and dementia, compared with people who rarely drink them.
Important note: this is an association, not proof that the drinks directly cause these conditions.
For comparison:
- Sugar-sweetened drinks → more strongly linked to obesity, diabetes, and heart disease
- Artificially sweetened drinks → linked in some studies to stroke and dementia risk
Health experts usually recommend water, milk, or unsweetened drinks as safer everyday options.
If this was for a quiz or class question and you want the exact wording, tell me the context and I’ll tailor it precisely.