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Some Placentophagy Studies


Brief synopsis:Nearly every mammal will consume the placenta after it is born. There are four main scientific theories that attempt to describe the causes of placentophagia, but none of them adequately explain this phenomenon in all of the cases in which it manifests.

Main theories
The first theory is that there is a sudden shift toward carnivorousness upon giving birth, causing a confirmed herbivore to suddenly crave meat. Basically, since the placenta is readily available, the mother consumes it. In testing this hypothesis, a variety of meats were presented to herbivores before, during, and after birth; all of the meats were refused, while the placenta was enthusiastically consumed. Another theory along the same line is that the mother just happens to be hungry after all that hard labor, so she eats the placenta. While many species do refuse food and drink during labor, it is not true of all species. Even animals that consume food and drink throughout the duration of labor will still consume their placenta.

Some researchers have hypothesized that a new mother has a sudden and specific hunger for placenta, presumably as a reaction to childbirth. Although there may be physiological components to the compulsion to consume the placenta, it has been observed that a large number of mammals will consume placenta from another animal, even if they have not yet delivered their own young. This would imply that the unique physiological state present at birth is not necessary for placentophagia to occur.

It's not to clean the nest site!

The last, and most commonly cited hypothesis for placentophagia, is that mothers consume their placenta to clean the nest site and keep the offspring safe from predators. While a seemingly sound theory on the surface, there are many reasons to refute this popularly held belief. For one, unchallenged predators consume their placentas, even though they are not likely to fear that predators could harm their young. Additionally, even in species in which the baby is able to get up and walk away from the birth site, the mother will stay until the entire placenta is consumed. Certain primates that deliver their young high in a tree will not let the placenta drop to the ground, but will instead consume it, even taking an hour or two to do so. And, lastly, birth is a messy process. Yet there is no effort to clean up any of the blood and other fluids that exist on the ground of the birth site, which would also presumably attract predators.

An evolutionary purpose

There must be some other evolutionary cause for placentophagia. A very interesting adaptive theory is that consuming placenta may actually affect the mother's immune system, by suppressing her body's inclination to create antibodies as a response to antigens present in the baby's blood. As an example, women who are negative for the Rh antigen can have difficulty supporting a subsequent pregnancy if her first baby is positive for the Rh antigen. Her body can create anti-Rh antibodies, which then attempt to fight off the next pregnancy if the next baby is Rh-positive, mistakenly recognizing it as a threat. Placentophagia may actually cause a suppression of this response, allowing her to have successful subsequent pregnancies. Human women who are Rh-negative are often encouraged to get a shot of Rhogam, a vaccine that blocks the creation of high levels of these antibodies. Mammals may have adapted their own antidote over thousands of generations, simply by practicing placentophagy.

This is an exciting area of research, and we will hopefully learn much more about the benefits of placentophagy in the future. Perhaps we will even discover that Nature has had a cure for this antibody issue all along.

Summary of Mark B. Kristal's research paper, Placentophagia: A Biobehavioral Enigma: Neuroscience & Biobehavioral Reviews, Vol. 4, pp. 141--150.

  • Placenta as Lactagon Soykova-Pachnerova E, et al. ( 1954). Gynaecologia 138(6):617-627.

 Brief synopsis:  An attempt was made to increase milk secretion in mothers by administration of dried placenta per os. Of 210 controlled cases only 29 (13.8%) gave negative results; 181 women (86.2%) reacted positively to the treatment, 117 (55.7%) with good and 64 (30.5%) with very good results. It could be shown by similar experiments with a beef preparation that the effective substance in placenta is not protein. Nor does the lyofilised placenta act as a biogenic stimulator so that the good results of placenta administration cannot be explained as a form of tissue therapy per os. The question of a hormonal influence remains open. So far it could be shown that progesterone is probably not active in increasing lactation after administration of dried placenta.

This method of treating hypogalactia seems worth noting since the placenta preparation is easily obtained, has not so far been utilized and in our experience is successful in the majority of women.


Brief synopsis:Although ingestion of the afterbirth during delivery is a reliable component of parturitional behavior of mothers in most mammalian species, we know almost nothing of the direct causes or consequences of the act. Traditional explanations of placentophagia, such as general or specific hunger, are discussed and evaluated in light of recent experimental results. Next, research is reviewed which has attempted to distinguish between placentophagia as a maternal behavior and placentophagia as an ingestive behavior. Finally, consequences of the behavior, which may also be viewed as ultimate causes in an evolutionary sense, are considered, such as the possibility of beneficial effects on maternal behavior or reproductive competence, on protection against predators, and on immunological protection afforded either the mother or the young.



  • Selander, Jodi, et al. "Human maternal placentophagy: A survey of self-reported motivations and experiences associated with placenta consumption." Ecology of food and nutrition 52.2 (2013): 93-115.

Maternal placentophagy, although widespread among mammals, is conspicuously absent among humans cross-culturally. Recently, however, advocates for the practice have claimed it provides human postpartum benefits. Despite increasing awareness about placentophagy, no systematic research has investigated the motivations or perceived effects of practitioners. We surveyed 189 females who had ingested their placenta and found the majority of these women reported perceived positive benefits and indicated they would engage in placentophagy again after subsequent births. Further research is necessary to determine if the described benefits extend beyond those of placebo effects, or are skewed by the nature of the studied sample.

Interesting findings from the study: 95% of participants had a "positive" or "very positive" experience with placentophagy, and ALL but two of the participants said they would use placenta again after a subsequent pregnancy.

Very Interesting article -

Great publicity from the Herald -

Even better article with reference to one of our own Placenta Encapsulation Specialists one amazing mother to three- 


An interview with Katharina Dalton -A British physician and pioneer in the research of premenstrual stress syndrome and Post Partum Depression


 Can I get Group B Strep from Placenta Capsules? 


Progesterone At Birth - Katharina Dalton

Another sudden, radical change in progesterone occurs at the birth or delivery of the baby. Dr. Dalton explains that, at birth, "the placenta comes away from the womb, and suddenly, within twenty-four hours, the high level of progesterone in the mother's blood drops to nearly zero." At this point, the mother's breasts begin to produce milk, stimulated by another hormone, prolactin, which also delays the menstrual cycle and the cyclic production of progesterone until after breastfeeding has stopped.
After the euphoria of pregnancy and finally holding her baby in her arms, many mothers experience highly emotional days, with unexpected tears of emotion or even bouts of "the blues" as they adjust to their new life. However, about 10 percent of women experience a condition known as postpartum depression according to Dr. Dalton. Typical symptoms include high emotion and tearfulness plus anxiety, irritability, confusion and possibly even hallucinations, along with an inability to sleep. In severe cases, the mother may even reject or cause harm to the baby. Fortunately, postpartum depression, which is linked to a progesterone deficit, can be prevented by administering progesterone immediately after delivery. Supplementation may be continued as needed after that, including while breast feeding, according to Dr. Dalton. In fact, she adds, "progesterone
enhances lactation, which is an additional bonus.”



How to make your own Homeopathic Placental Remedy

We all know Tens machines are fantastic for the ease of pain during labour but they are also very useful for those after pains and in the immediate few days post birth.

 "It's always a good idea always to do something relaxing prior to making an important decision in your life" - The words of Katie Brown, mother, author and yoga expert -   all about motherhood. They supply pretty much everything you would need from an online maternity store,including a great blog page giving advice to pregnant and breastfeeding mums. 

'Coaching with me is not a lesson in gymnastics. My students come from all walks of life: parents, business people, university students, healers. I work with the body where it's at, from beginners to the more experienced' Kate Southward Yoga teacher, North Shore -

For anyone considering hiring a Doula, then I can totally recommend the lovely Rachel from Nesting Doula Services  Holistic Baby is run by Cathy McCormick….Its a resource and support network for mothers and families that is holistic and focuses on the positive. She is a midwife and runs Antenatal classes, Mother's support groups, 'Baby Talks' and holistic advice.  a space to connect and share knowledge for mums with young children