Lǎoniánchīdāizhèng mùqián hái méiyǒu gēnzhì de fāngfǎ.
There is still no cure for Alzheimer's disease.
Tips
usage
The more respectful medical term is 阿尔茨海默症 (Ā'ěrcíhǎimò zhèng, Alzheimer's). 老年痴呆症 is common but considered somewhat stigmatizing due to the word 痴呆 ("demented/idiotic"). In formal medical contexts, 认知障碍 is preferred.