The placenta is an amazing organ that connects the developing fetus to the uterine wall to supply and nurture the baby during pregnancy with nutrients, hormones, oxygen, food and other biochemical substances via the mother’s blood supply.
The placenta begins producing hormones at 6 - 8 weeks gestation to help sustain pregnancy. These hormonal levels continually increase during pregnancy, and by the third trimester there are 3 times the normal level of hormones in a pregnant woman's system.
It is well known that around day 3 after birth, women experience what has been deemed as the ‘baby blues’. Hormone levels have decreased, breast milk may be coming in, as a result some women may feel very emotional.
By 4 - 5 days postpartum, these hormone levels will drop significantly; plummeting back to preconception levels. This is a huge fluctuation going from 3 times the normal level to 'below normal' hormonal level, and this is where the balancing properties of the placenta come into play.