From our research

Why Do I Walk Into a Room and Forget Why?

The doorway moment has a name and a mechanism. Why it happens to everyone, why it happens more in perimenopause, and ...

What Perimenopause Symptoms Should I Track?

Perimenopause is diagnosed on pattern, not on a blood test. Here is exactly what to record across one cycle, why each...

Why Does Perimenopause Affect Sleep?

Perimenopause disrupts sleep through several separate mechanisms that arrive together — a narrowed temperature thresh...

Is It Perimenopause, or Something Else? How to Tell the Difference

New cognitive symptoms in your 40s have several possible causes. A routing guide to what separates perimenopause from...

Menopause When Does It Start? Ages, Stages & Timeline 2026

Perimenopause Brain Fog Solutions: What Actually Helps, and How Fast

The interventions with real evidence behind them for perimenopausal brain fog, ordered by how much difference they ma...

Perimenopause Rage and Morning Irritability: Why You Wake Up Angry

"My Tests Came Back Normal": When Your Doctor Dismisses Perimenopause

Loss of Confidence at Work: Why You Feel "Stupid"