Hot flashes, brain fog, anxious nights, and a doctor telling you it’s “just stress” can make you feel powerless. We start the year by taking that power back. I sit down with Dr. Sarah Doyle—doctor of physical therapy and functional medicine practitioner—to map the real mechanics of midlife: how estrogen fuels brain energy and vessel health, why progesterone calms the nervous system, and how chronic stress diverts raw materials away from the hormones that stabilize mood, sleep, libido, and cog...