Trevor MacDonald started his blog, www.milkjunkies.net, to share his experiences of transitioning, becoming pregnant, and breastfeeding with the use of supplementary donated human milk. Since 2011, milkjunkies.net has received over half a million visitors. Trevor founded the first online support group for transgender people interested in pregnancy, birth, and breast or chestfeeding. He has initiated and helped to design and carry out a study funded by the Canadian Institutes of Health Research on the experiences of transmasculine individuals with pregnancy, birth, and infant feeding. He received international media attention in 2013 when his application to volunteer with his local chapter of La Leche League, a worldwide breastfeeding support organization, was blocked on the grounds of his gender identity. He successfully campaigned for a change to LLL's policy in 2014. Trevor is a Huffington Post featured blogger, and has appeared as a speaker and workshop leader at conferences such as Yonifest (with Ina May Gaskin and Michel Odent); the Philadelphia Trans Health Conference; the Canadian Professional Association for Transgender Health; the Canadian Association of Midwives; and the International Lactation Consultant Association, to name a few. He frequently presents educational sessions for church groups, university courses, LGBT youth groups, and health care workers.