If you do a thread search you will see several threads on just this topic, many people have had broiler birds for years that have lived happy healthy lives.
I grew up on a commercial broiler farm, after the chicken catchers would come I would always go into the chicken houses and take the ones they left behind to give to my cousin. some would do fine in his normal flock and thrive for years, others would randomly have heart attacks after a couple months.
I grew up on a commercial broiler farm, after the chicken catchers would come I would always go into the chicken houses and take the ones they left behind to give to my cousin. some would do fine in his normal flock and thrive for years, others would randomly have heart attacks after a couple months.