Flaxseed and soy are the well-known sources of phytoestrogen—Lignan in the former and Isoflavones in the latter. While the anti-cancer and cardiovascular benefits of phytoestrogen in men have been shown in studies after studies, many men still avoid it, thanks to the accusation that phytoestrogen intake promotes development of female characteristics, such as breast development, among other things. Soy isoflavone has been the most attacked with regards to the effect on male sexuality. There is a report of a 60 years old male who developed gynecomastia (male breasts) after drinking almost 3 liters of soymilk daily. This is an extreme amount by most standards. Moreover, it is the only report of that nature to date. This singular gynaecomastia case due to soy product consumption has been overblown out of proportion without mentioning that the individual has taken an unusually large amount of soy products daily for several months. To date, there is no report on Lignan intake and male breasts development.