Magnolia bark (Magnolia officialis) has been shown to lower cortisol, the stress hormone. Increased cortisol occurs from chronic stress and is also associated with weight gain (particularly fat in the abdominal area), sugar control problems, memory problems, and a host of other stress induced disorders.
Studies have shown that magnolia bark has decreased symptoms of depression, anxiety, and pms.
The flower essence of magnolia is used during a healing crisis, moderating the aggravation of symptoms that often happen when healing takes place and stabilizes protection from the outside energies.
One of my personal favorite products that contain magnolia is called Cortisol Manager which contains a combination of adaptogenic herbs along with magnolia to balance cortisol levels and support adrenal function.