Reproductive toxicology accounts for a decent percentage of the research represented at the Society for the Study of Reproduction meeting wrapping up today in Kona, HI. Most of this has been directed at estrogen mimetics and assorted endocrine disrupters like Bisphenol A, the chemical in polycarbonate plastic that’s has many ditching their Nalgene water bottles. Many of these are ubiquitous chemicals that we come in contact with, but don’t intentionally ingest. So, I was a bit surprised to see a poster on glucosamine, a dietary supplement that many take for joint health. I met Jeremy Thompson today who with his group in the University of Adelaide, has been amassing evidence putting him on the wrong side of the supplement industry in Australia.