Is 'transgenderism' a mental health illness?

Is 'transgenderism' the result of several undiagnosed and untreated mental health disorders? Or could 'transgenderism' be a result of chemical manipulation through biological pollutants such as BPA, EE or DES? PBA and EE have been shown to cause expression changes to 235 genes including behavioral changes - especially when subjects were exposed in early developmental stages, showing it can lead to long-lasting and likely permanent effects on neurobehavioral responses.

Another synthetic hormone which may be causing a rise in transgenderism is DES. It is worth noting that the DES community are themselves looking in to this possibility. See

https://desaction.org/lgbtq/

We would love to hear your thoughts. Welcome to the conversation.