Stem cell treatments

My wife has had Parkinsons and MS for app. 11/12 years.
I realise that her medication is aimed at treating symptons and nothing seems to be available to help the root cause.
I have recently read about the possibility of Stem Cell treatment.
Does anyone have any knowledge or first hand experience of this.??
I wonder why this seems to only be available abroad and at expensive private clinics.

Hi JK,
We noticed this was your first post and wanted to take a moment to welcome you to our community forum. You’re soon to hear from other members on this topic, but we’d also like to direct you to our website, which has loads of info regarding stem cell research, including the latest news. We recommend starting here: Stem cell research | Parkinson's UK. You can also search the term using the bar in the top right to discover other links, including to archived forum discussions. Alternatively, if you would like to speak to a skilled and friendly advisor, do reach out to our free and confidential helpline on 0808 800 0303.
With our warmest wishes,
Forum Moderator