Articles like this on internet sites drive me nuts. While the article is nicely written, it provides absolutely no scientific evidence for its claims. Who did the study that junk food causes gynecomastia? Was the study peer reviewed? I have some experience with academic and scientific studies; most abstracts of those studies include more evidence than that whole article.
You can get on the internet, make any bizarre claim you want and nobody monitors it. Many news type websites are simply electronic versions of the “National Enquirer”. How many times have you seen “3 Headed Baby Fathered by Space Alien” on the cover of the “National Enquirer” while standing in the market checkout line? Okay, maybe I have only seen that one twice—but you get the idea.
The next time you see some wide sweeping statement by any source first ask does it make sense. Like PaaPaw said, did it only have an effect on one breast? Consumption of food would be systemic effecting both breasts and even other parts of the body. That guy looks pretty skinny for eating a ton of French fries.
Lets state something that is scientifically known; most gynecomastia is idiopathic. Why do some people get it and others don’t, we don’t know for sure. Why does it go away for most people, we don’t know. It mostly comes at puberty and older age, it is somewhat genetic, it relates to testosterone being converted to estrogen in some way. Anything beyond that is a guess.
Sorry for the rant but people swallowing nonsense hook, line and sinker really bugs me. Think critically when you read something.