But sometimes your thyroid doesn't produce enough hormones, or produces far too much of one hormone, upsetting this precision and resulting in an imbalance in your body. (ericbakker.com)
While you were sick, your body might not have absorbed enough hormones from the pill to prevent pregnancy. (babycenter.com)
It's almost as if you need enough hormone to knock the cell door down, because it doesn't want to open. (robdaquila.com)