Anyone who suffered an anaphylactic reaction to a substance is an absolute idiot for trying it again.
And I do not know of any self-respecting medical professional who would encourage such a risk unless it were literally a matter of life and death.
Well I still eat beef but I've only gone beyond the hives once and keep an epipen handy. https://en.wikipedia.org/wiki/Alpha-gal_allergy
It comes and goes depending on if I've been bitten by a certain tick recently. It's the only delayed food allergy known. The reaction occurs 4-8 hours after eating so when I eat beef or even ribs for dinner, I'll take an allergy pill right before bed. I eat smaller servings of meat now, especially if it's something like ribeye. The one time I went beyond the hives was after eating some ham from a home grown heritage breed of pig.
My choices are abstain from all mammalian meat which leaves poultry and fish or eat beef and pork with care. I've never had it as bad as some people do and can manage it now. There are some people who can eat a hunk of chicken that was cooked on the same grill as a steak and go into full anaphylactic shock.
Unlike most food allergies, in some people, the alpha-gal allergy may recede over time, as long as the person is not bitten by another tick. The recovery period can take 8 months to 5 years
I can be good for a year or three and be able to increase red meat consumption and then get bit by just the right tick and become more allergic again. After a few years, I tend to forget about it and then eat something and wake up itchy at 1-2am, take an allergy pill, wait for an hour for the hives to go away and then I can go back to bed but I'll be wiped out energy wise the whole next day. I haven't had a whole ribeye steak in 15 years. The wife and I used to have ribeye night once a week which is how I figured out what the cause was.
But yeah, call me crazy, I voluntarily eat a food that I'm sometimes allergic to. I must have gotten bit by the right tick recently because I woke up with the hives at 1:30am last week after eating smoked baby back ribs for dinner. The ribs were really good though. Took a little pink pill, scratched gently for an hour and went back to bed.