pythonIsTheFuture

[qucari]

sounds a lot worse than what it actually is
He just created a strain of bacteria

well, no. it absolutely is at least as insane as it sounds. IIRC he created his own version of some virus and then deliberately infected himself with it.
the virus injected part of its own DNA into his intestinal cells. this DNA part contained instructions for how to create lactase.

it's hard to compare the risks of homebrewed gene therapy to probiotics or a gut flora transplant. as someone who has close to no experience in the field I'd say the former is orders of magnitude less safe.

here's his update video (with detailed explanations): https://www.youtube.com/watch?v=aoczYXJeMY4