Julie,
These hormones are present in most if not all men but don't trigger the dressing need in the majority . The debate about being born like it I beleive is the extra link , our wiring is different from birth so we are more susceptible to how those hormones affect us .
Dressing full time means those highs and lows level out but the need to present female is still there , male mode is far more unsettling now , I feel in balance and comfortable within myself .