Hormones

🎧 Listen to this article Your browser does not support the audio element. Why Your ‘Normal’ Blood Work Is Lying to You Lab reference ranges are averages drawn from everyone tested at that lab — sick, healthy, old, young. A 2024 study in Thyroid found that age-specific TSH intervals differ significantly from the standard ranges labs use, meaning women over 40 have different optimal levels than women under 30, yet the lab gives everyone the same cutoff (Jansen et al., 2024). A 2025 cross-sectional study confirmed that thyroid function reference intervals vary by age, sex, and race, and that one-size-fits-all ranges miss early thyroid dysfunction in women specifically (Li et al., 2025). ...

The Progesterone Crash Nobody Warns You About at 35 You’re 35. Your periods are heavier. Your anxiety is worse. You can’t sleep. You’re gaining weight around your middle for the first time in your life. ...

Your Cortisol Is Stealing Your Sleep You sleep 8 hours. You wake up exhausted. You’ve tried blackout curtains, sleep apps, melatonin, magnesium. Nothing sticks. The problem isn’t your bedroom. It’s your cortisol. ...

Your Cortisol Is Stealing Your Sleep You sleep 8 hours. You wake up exhausted. You’ve tried blackout curtains, sleep apps, melatonin, magnesium. Nothing sticks. The problem isn’t your bedroom. It’s your cortisol. ...

Why you can’t think straight after 40 You used to walk into a room and know why you were there. Now you stand in the doorway, staring at the wall, trying to remember if you came for your phone, your keys, or something you can’t name at all. ...

Every fitness influencer swears by it. Every podcast guest raves about it. Every health coach sells a program around it. Intermittent fasting. The miracle that burns fat, clears your skin, and probably cures your existential dread. ...

The bacteria in your gut are running your hormones. Here’s what happens when they stop doing their job.

The thing your doctor isn’t testing for is the upstream driver of almost everything else.