I'd be a little worried at that age. I tried some old ones I had and they smelled rancid which isn't good for you. I am curious how the taste has changed over the years, I haven't tried any in a decade.
....
This is the whole purpose of this thread....emergency preps and survival.
Generally, most everything I've tried was fine.
The only item that I didn't eat was a bag of mm candy.
The peanuts tasted stale, but I didn't get sick in any way.
What have I learned from this experiment?
If you keep MREs as an emergency food supply, you'll be in pretty good shape.
But I would rotate your supply about every 5 to 10 years.
The chemical heaters in these packs fail when they get old.
Rotating your supply is a good practice run to familiarize you and your family with emergency preparations.