I could not find the US TV show available for purchase anywhere. It wasn't a great era for TV quality, though.. I hope they do a Netflix reprise!

Shout Factory released the series on DVD. It's not available on Blu-ray or streaming that I'm aware of.

https://www.shoutfactory.com/product/max-headroom-the-comple...

Also, shows like "Embarrassing Bodies" (UK Channel 4) are very similar to the "Dr Duncan Show" (i.e. members of the public showing their personal illnesses/diseases on national TV).

https://en.wikipedia.org/wiki/Embarrassing_Bodies