Forschung bringt Plastikflaschen mit erhöhtem Blutdruck und erhöhtem Risiko für Herzinfarkte, Schlaganfälle, Demenz und Krebs in Verbindung

The article says it raises blood pressure, doesnt mention anything about cancer, dementia. OP likely extended the title to those diseases because blood pressure could be linked to those, but id argue there are so many confounders that its difficult to equate plastic consumption to dementia directly, as the title suggests