My guess is they're using a cocktail of treatments

Oooh, goodie! For me?

Alzheimer’s Association recommends ice cream as an alternative to Prozac

And then, ice cream! Yes, ice cream. It takes all of your worries away. It is soothing and delicious, and personable: everyone has a favorite flavor! Ice cream brings people with dementia to happier, warmer times when the treat was shared with friends and loved ones on special, joyous occasions. Ice cream has the power to immediately elicit soothing feelings at the very first taste of a single spoon-full.

It erases all the negative feelings related to the frustration and continues to stimulate pleasure receptors in the brain with every new scoop. And dementia allows one to fully enjoy the treat, with no concerns for calories, weight gain, or dietary needs, completely guilt-free!

For people with dementia, ice cream is far more effective and safe than Prozac, or any other “happy” drug on the market!