If something feels different in your mid-to-late thirties (your skin, your sleep, your mood) you're not imagining it. Here's what's actually happening hormonally, and what you can do about it.

Exosomes are everywhere right now; in serums, in-clinic treatments, and all over social media. They promise collagen, repair, and regeneration, but the science is still catching up. In this week’s issue, I break down what exosomes actually are, why they’re controversial, the real questions we should be asking, and what’s worth paying attention to before diving into the trend.