The estrogen used for hormone replacement therapy came from the urine of specially kept pregnant mares. What’s going to happen to all those horses, now that thousands of women are no longer taking HRT? The answer: they’ll be slaughtered for horsemeat.
Keith Morrison writes for NBC News that many of the mares whose urine was used to produce HRT will be sold for horsemeat, which is popular in Europe and Japan. Premarin, which was made from their urine, was once a $2 billion business. Since estrogen could only be extracted from the urine of pregnant mares, there are lots of extra foals that may be slaughtered as well.