FACEPALM: Bryan Johnson, the tech millionaire famous for his many biohacking procedures as he attempts to live forever, has been diagnosed with an incurable autoimmune disease. The subject of the Netflix documentary Don't Die: The Man Who Wants to Live Forever has autoimmune gastritis (AIG), a condition which, in Johnson's words, has led to his stomach "eating itself."

Johnson revealed his diagnosis on Instagram. He wrote that 2-5% of people have autoimmune gastritis, though the number may be higher as it can be hard to spot in its early stages.

Not one to be deterred by an incurable autoimmune condition, Johnson says he will try to "solve" his illness and will share everything he learns.

The Braintree founder has tried many ways to reverse and even stop the aging process, the most famous being injecting himself with plasma from his teenage son.

He was also taking 54 supplements every day, though he discovered last year that one of them, an immunosuppressant called rapamycin originally used to prevent organ rejection, was actually aging him.