Can certain foods act as a natural steroids?

Fantasy stuff: If you need to take glucocorticoids for a serious medical illness, don't expect to find an effective substitute at the dinner table. If you're a bodybuilder, you're already being targeted by a huge amount of disinformation by hucksters and entertainers. It'll disappoint you. Let your natural androgens and your hard work build you up, and consider adding creatine if your physician is good with it.