Ep 16: Will tofu give me man-boobs?

Episode 16 · July 3rd, 2019 · 1 hr 4 mins

About this Episode

Scared of soy?? Us too.

This episode unpacks the man-boob myth and also looks at the effects of soy consumption on pre- and post-menopausal women.

Justin B grabs a strong Aeropress coffee just before the show - clearly his usual frenetic enthusiasm was going to be insufficient for this one. So we make it rain in the first half of the show as we deliver a some long overdue listener shout-outs, investigate the placebo effect, cross-examine Wim Hof,  discuss the downside of having a twin and castigate Spotify DJs.

Soy chat starts around 29mins.

Jeremy’s Iron is an excuse for two mates to geek out over science, research and publication. It’s a conversation between a biostatistician (Justin Zeltzer) and an orthopaedic surgeon (Justin Bobyn).

Jeremy’s Iron is available on iTunes: HERE
Join our Facebook page:


Kaptchuk TJ, Friedlander E, Kelley JM, et al. (2010) Placebos without deception: a randomized controlled trial in irritable bowel syndrome. (link is external) PLoS One. 2010;5(12):1–7.

Martinez, J. and Lewi, J. (2008) An Unusual Case of Gynecomastia Associated with Soy Product Consumption. Endocrine Practice. Vol. 14, No. 4, pp. 415-418

Messina M. (2016) Soy and Health Update: Evaluation of the Clinical and Epidemiologic Literature. Nutrients. 2016;8(12):754. Published 2016 Nov 24. doi:10.3390/nu8120754

Panel on Food Additives and Nutrient Sources added to Food (2015) Scientific opinion on the risk assessment for peri- and post-menopausal women taking food supplements containing isolated isoflavones. EFSA J. 2015;13:4246.

Siepmann T1, Roofeh J, Kiefer FW, Edelson DG. (2011) Hypogonadism and erectile dysfunction associated with soy product consumption. Nutrition. 2011 Jul-Aug;27(7-8):859-62. doi: 10.1016/j.nut.2010.10.018. Epub 2011 Feb 25.