24/04/2026
Why does fertility actually change as we get older? It’s a question we get all the time, and the answer is more about “quality” than just “quantity.” 🧬Your eggs are gametes, which is just a fancy way of saying they carry exactly half the genetic blueprint (23 chromosomes) needed to make a baby. To keep that blueprint safe and organized, your body uses a special protein called cohesin.Think of cohesin as the “molecular glue” 🧪 that holds your chromosomes together in a perfect little package.As we age, that molecular glue can naturally start to lose its “stickiness.” When the glue weakens, the chromosomes can shift or separate the wrong way. This leads to small genetic errors that make it harder for an embryo to develop healthily, which is why conceiving can take a bit longer as the years go by.While we don’t have a simple blood test for egg quality yet, your age is the best “insider info” we have to predict how that molecular glue is doing.Understanding your biology isn’t about the pressure of a ticking clock - it’s about having the facts so you can plan your life on your own terms. Whether you’re thinking about egg freezing, TTC, or just want to know what’s going on inside, knowledge is your superpower. ✨