It started with an Instagram infographic, which featured colostrum on a list of "It Girl Must-Haves" along with collagen, green tea, and sleepy girl mocktails. Next, a TikToker popped up on my "For You" page claiming that colostrum aided her gut and immune health. A week later, one of my favorite podcasts ran an ad for a colostrum powder, claiming that it eradicated the host's chronic bloating. Then, like clockwork, one of my colleagues asked me, "Have you tried colostrum yet? It's helped me so much with hair growth."
I can't go five minutes lately without stumbling upon an ad or testimonial about bovine colostrum, which is a form of milk secreted during the first few days after a cow gives birth. I'm not alone: A quick search for "colostrum" on TikTok yields more than 19,000 posts with the hashtag for the supplement. Meanwhile, there are dozens of TikTok and Instagram accounts devoted to colostrum's benefits, one of which has over 169,000 followers.
