The dementia discussion is scary since the alzheimer's foundation has actually had to make a page about it:
"Trans people who have transitioned (or are in the process of doing so) may not remember that they have started or been through this process. If they have a partner or friend who is transitioning, they may also forget this."
"A person may not recall their current gender. They may see themselves as being pre-transition resulting in heightened disorientation and anxiety. They may be surprised to see the physical changes that have occurred."
They also have worse and earlier mental decline:
"Transgender and gender nonbinary adults in the U.S. are more likely to report worsening memory and thinking, functional limitations and depression compared to cisgender (non-transgender) adults, according to two studies reported at the Alzheimer’s Association International Conference® (AAIC®) 2021 in Denver and virtually.
Little is known about Alzheimer's disease, dementia and cognitive impairment among transgender adults. However, it is known that transgender adults experience a greater number of health disparities considered risk factors for dementia — including higher cardiovascular disease, depression, diabetes, tobacco/alcohol use and obesity — and the social inequities experienced by transgender adults are also linked to an increased risk of cognitive impairment."
And wouldn't you know when everything is stripped away they act like their "
assigned at birth" gender:
" In the unit, she presented with insomnia, agitation, dysphasia, having sexually inappropriate conversations with staff about being interested in men, which was a continuation of new behaviour that was identified in the community, as well as making innuendos to female members of staff while talking about herself as a ‘man’. She presented with toileting behaviour that would identify her as male gender, for example standing to urinate as if using a urinal, interpreted as reversal towards biological gender identification. Her partner felt devastated by behaviours exhibited by the patient, which could be identified as male-gender based behaviour aligned with biological gender by birth."