Could male breast enlargement be caused by soy productcs?

Probably not: This issue has been raised because of the presence of certain chemicals such as soy phytoestrogens and isoflavones that have an estrogen and anti-testosterone effects. This issue remains controversial with both male and female breasts particularly with breast cancer and has caused some physicians to recommend dietary restrictions. However this remains far from conclusive. See photo comments.

Nope!: Gynecomastia is generally caused by puberty hormones, some medications, marijuana use, and rarely testicular tumors. Some male breast enlargement may be caused or worsened by obesity as well, but soy product use is not implicated in this surgically-correctible problem.