Effects of Human Maternal Placentophagy on Maternal Postpartum Iron Status: A Randomized, Double‐Blind, Placebo‐Controlled Pilot Study

Online scientific research on placentophagy: a bibliometric analysis

Objective

To classify the bibliometric indicators of online scientific research on placentophagy.

Methods

A bibliometric study was conducted to quantify the scientific production of authors and institutions with the aim of highlighting the growth and impact of these publications nationally and internationally. The Bradford Law, network maps, and textual statistics were used, with searches conducted in libraries and databases in October 2021.

Results

The sample consisted of 64 articles, whose primary authors were associated with 49 institutions, and mostly with degrees in anthropology. The United States of America was the country that published the most papers on the theme, and most studies were reviews with individual production. Through the term analysis, it was found that the predominant themes regarding placentophagy were the following: Alternative therapy for women's health, methodologies used for research in this area, period of placenta ingestion (postpartum period), and its benefits.

Conclusion

The bibliometric indicators found are essential for the development of future research.

Comparison of placenta consumers' and non-consumers' postpartum depression screening results using EPDS in US community birth settings (n=6038): a propensity score analysis

BACKGROUND

Preventing postpartum depression (PPD) is the most common self-reported motivation for human maternal placentophagy, yet very little systematic research has assessed mental health following placenta consumption. Our aim was to compare PPD screening scores of placenta consumers and non-consumers in a community birth setting, using propensity score matching to address anticipated extensive confounding.

METHODS

We used a medical records-based data set (n = 6038) containing pregnancy, birth, and postpartum information for US women who planned and completed community births. We first compared PPD screening scores as measured by the Edinburgh Postpartum Depression Scale (EPDS) of individuals who consumed their placenta to those who did not, with regard to demographics, pregnancy characteristics, and history of mental health challenges. Matching placentophagic (n = 1876) and non-placentophagic (n = 1876) groups were then created using propensity scores. The propensity score model included more than 90 variables describing medical and obstetric history, demographics, pregnancy characteristics, and intrapartum and postpartum complications, thus addressing confounding by all of these variables. We then used logistic regression to compare placentophagic to non-placentophagic groups based on commonly-cited EPDS cutoff values (≥ 11; ≥ 13) for likely PPD.

RESULTS

In the unmatched and unadjusted analysis, placentophagy was associated with an increased risk of PPD. In the matched sample, 9.9% of women who ate their placentas reported EPDS ≥ 11, compared to 8.4% of women who did not (5.5% and 4.8%, respectively, EPDS ≥ 13 or greater). After controlling for over 90 variables (including prior mental health challenges) in the matched and adjusted analysis, placentophagy was associated with an increased risk of PPD between 15 and 20%, depending on the published EPDS cutoff point used. Numerous sensitivity analyses did not alter this general finding.

CONCLUSIONS

Placentophagic individuals in our study scored higher on an EPDS screening than carefully matched non-placentophagic controls. Why placentophagic women score higher on the EPDS remains unclear, but we suspect reverse causality plays an important role. Future research could assess psychosocial factors that may motivate some individuals to engage in placentophagy, and that may also indicate greater risk of PPD.

Placentophagia and the Tao of POEF

Placentophagia, ingestion of placenta and amniotic fluid, usually during parturition, is a behavioral feature of nearly all nonaquatic, placental mammals, and is a nexus for several interlocking behavioral phenomena. Placentophagia has not been typical of human cultures, but in recent years, some women in affluent societies have engaged in it, thereby bringing publicity to the behavior. First, we summarized benefits of placentophagia for nonhuman mammals, which include increased attractiveness of neonates, enhanced onset of maternal behavior, suppression of pseudopregnancy, and enhancement of opioid hypoalgesia by Placental Opioid-Enhancing Factor (POEF), a benefit that may extend well outside the context of parturition. The research on POEF in animals was discussed in detail. Then we discussed placentophagia (placentophagy) in humans, and whether there is validity to the claims of various benefits reported primarily in the pro-placentophagy literature, and, although human afterbirth shows POEF activity, the POEF effect has not yet been tested in humans. Finally, we discussed the general possible implications, for the management of pain and addiction, of isolating and characterizing POEF.

Impact of tissue processing on microbiological colonization in the context of placentophagy

A mother’s postpartum ingestion of raw or processed placental tissue—referred to as human maternal placentophagy—is an emerging health trend observed in industrialized nations. Placenta is commonly consumed as small pieces of raw tissue, or as raw or steamed dehydrated pulverized and encapsulated tissue. To investigate the potential neonatal health risks of this behavior, the present study focused on microbial colonization of processed placenta preparations with potentially pathogenic bacteria Streptococcus agalactiae (Group-B-Streptococci; GBS) and Escherichia coli (E. coli). In the clinical approach placentas from 24 mothers were analyzed. Two placentas, from 13 mothers with confirmed positive maternal GBS status, showed GBS-growth on their surface (2/13; 15.4%) independent from delivery mode or antibiotic treatment. All processed samples (n = 24) were free from GBS. In the experimental approach, a standardized inoculation protocol was introduced to resemble ascending vaginal and hematogenous colonization. Six placentas from elective term C-sections of GBS negative mothers were collected and artificially inoculated with highly concentrated suspensions of GBS and E. coli. Heat processing significantly reduced the number of colony forming units (CFU) for GBS and E. coli. Our results suggest placentophagy of processed tissue is an unlikely source of clinical infection.

Alternative Birth Plans and Unintended Maternal and Neonatal Consequences: A Review of the Literature

Importance

Birth plans are an important part of childbirth preparation for many women.

Objective

The aim of this review was to discuss some common requests, specifically home birth, water birth, placentophagy, lotus birth, vaccination refusal, and vaginal seeding, including evidence-based recommendations, perceived benefits, and potential maternal and neonatal consequences.

Evidence Acquisition

A literature search for each topic was undertaken using PubMed and Web of Science. For the home birth section, the MeSH terms home AND birth OR childbirth AND outcomes OR complications OR recommendations OR guidelines were used. For the vaccination section, birth OR childbirth OR maternal AND vaccination refusal were searched. For the remainder of the sections, umbilical cord AND nonseverance OR placentophagy OR vaginal seeding OR lotus birth were searched. A total of 523 articles were identified. The abstracts were reviewed by 2 authors (J.R.W. and J.A.R.); 60 of these articles were selected and used for this review.

Results

Home birth is currently not recommended in the United States. Immersion in water for labor is acceptable, but delivery should not occur in water. Placentophagy and lotus birth should be discouraged because of risk of neonatal infection. Vaccines should be administered in accordance with national guidelines. Vaginal seeding should be discouraged until more is known about the practice.

Conclusions and Relevance

These evidence-based recommendations provide clear guidance for physicians so that the birthing experience can be enhanced for both mother and neonate without compromising safety.

Relevance Statement

This is an evidence-based literature review of alternative birth plans and recommendations for directive counseling.

Consumption of Maternal Placenta in Humans and Nonhuman Mammals: Beneficial and Adverse Effects

Placentophagia is a common mammalian behavior, and the first scientific study of the potential effects of human maternal placentophagia on lactation was in 1917. More recently, in the 1970s, human placentophagia was reported in North America with a trend toward increased consumption. There are different hypotheses about the women and nonhuman mammals' motivation towards placentophagia, but few have been subject to hypotheses testing. In women, the controversy continues; on the one hand, researchers attribute benefits like increased breast milk, weight gain in newborns, decreased postpartum depression and fatigue, and improved mothers' mood. In contrast, bacterial or viral infections, hormonal, or trace elements that could become toxic for both the mother and baby are reported as possible health risks. Other reports argue a lack of scientific rigor to support the self-reported benefits of placentophagia. Also, the way the placenta is prepared (raw, cooked, dehydrated, processed, or encapsulated) alters its components, and thus the desired effects. This review provides relevant information and the different hypotheses and points of view around placentophagia. However, there are still questions to be resolved, and more studies are needed to confirm or reject the data generated so far about placentophagia in humans and nonhuman mammals.

No. 378-Placentophagy

Consumption of human placenta has recently been highlighted; however, there is no evidence of benefit from its consumption. In addition, there is potential for harm. Therefore the SOGC does not recommend the practice of placentophagy.

Planned home births: The role of the primary care NP

Over the past 15 years, there has been a steady resurgence of planned home births in the US. Multiple factors may impact health outcomes for mother and baby. NPs have the opportunity to provide reliable information to women to help ensure a safe delivery and to optimize care for the neonate.

Birth, attitudes and placentophagy: a thematic discourse analysis of discussions on UK parenting forums

BACKGROUND

The post-partum consumption of the placenta by the mother (placentophagy) has been practiced since the 1970s in the global North and is seemingly increasing in popularity. Maternal placentophagy is not known to have been practiced in any other time period or culture, despite being near-ubiquitous in other placental mammals. An in-depth qualitative exploration as to the reasons for the practice, its increasing popularity and how it is narratively incorporated into discourses surrounding "ideal" natural and medical births are given in this paper.

METHODS

1752 posts from 956 users across 85 threads from the parenting forums Mumsnet and Netmums were identified for inclusion. A thematic discourse analysis was performed using NVivo.

RESULTS

Three main themes were identified: women recounted predominantly positive attitudes towards their own experiences of placentophagy, and they were respectful of others' views and experiences; some had negative views, particularly around the concept of disgust, but again, they were respectful of others' experiences. By far the most common method of consumption of the placenta was encapsulation.

CONCLUSIONS

This paper identifies the motivation for placentophagy to almost universally be for medical benefits, most commonly the prevention or treatment of post-natal depression (PND). Whilst disgust is a common reaction, discussion of risks is rare, and positive experiences outweigh negative ones. The increasing popularity of the practice is ascribed in part to the comparative palatability of encapsulation and the use of the internet to share resources and remove barriers. Parenting forums are important spaces to negotiate normative birth practices, including placentophagy, and act to build communities of women who value personal experience over medical evidence and highly value personal choice and bodily autonomy. Placentophagy is discussed in terms of its relation to natural and medical births with arguments being made using both discourses for and against the practice. This paper argues that placentophagy is practiced as a resistance to medicalisation as an assertion of control by the mother, whilst simultaneously being a medicalised phenomenon itself.

Placentophagy among women planning community births in the United States: Frequency, rationale, and associated neonatal outcomes

BACKGROUND

Limited systematic research on maternal placentophagy is available to maternity care providers whose clients/patients may be considering this increasingly popular practice. Our purpose was to characterize the practice of placentophagy and its attendant neonatal outcomes among a large sample of women in the United States.

METHODS

We used a medical records-based data set (n = 23 242) containing pregnancy, birth, and postpartum information for women who planned community births. We used logistic regression to determine demographic and clinical predictors of placentophagy. Finally, we compared neonatal outcomes (hospitalization, neonatal intensive unit admission, or neonatal death in the first 6 weeks) between placenta consumers and nonconsumers, and participants who consumed placenta raw vs cooked.

RESULTS

Nearly one-third (30.8%) of women consumed their placenta. Consumers were more likely to have reported pregravid anxiety or depression compared with nonconsumers. Most (85.3%) placentophagic mothers consumed their placentas in encapsulated form, and nearly half (48.4%) consumed capsules containing dehydrated, uncooked placenta. Placentophagy was not associated with any adverse neonatal outcomes. Women with home births were more likely to engage in placentophagy than women with birth center births. The most common reason given (73.1%) for engaging in placentophagy was to prevent postpartum depression. [Corrections added on 16 May 2018, after first online publication: The percentage values in the Results sections were updated.] CONCLUSIONS: The majority of women consumed their placentas in uncooked/encapsulated form and hoping to avoid postpartum depression, although no evidence currently exists to support this strategy. Preparation technique (cooked vs uncooked) did not influence adverse neonatal outcomes. Maternity care providers should discuss the range of options available to prevent/treat postpartum depression, in addition to current evidence with respect to the safety of placentophagy.

Placenta - Worth Trying? Human Maternal Placentophagia: Possible Benefit and Potential Risks

The use of placenta preparations as an individual puerperal remedy can be traced back to historical, traditional practices in Western and Asian medicine. To evaluate the ingestion of processed placenta as a puerperal remedy, the potential risks (trace elements, microorganisms) and possible benefit (hormones in the placental tissue) of such a practice are discussed in this article based on a literature review.

Human placentophagy: a review

Placentophagy or placentophagia, the postpartum ingestion of the placenta, is widespread among mammals; however, no contemporary human culture incorporates eating placenta postpartum as part of its traditions. At present, there is an increasing interest in placentophagy among postpartum women, especially in the United States. The placenta can be eaten raw, cooked, roasted, dehydrated, or encapsulated or through smoothies and tinctures. The most frequently used preparation appears to be placenta encapsulation after steaming and dehydration. Numerous companies offer to prepare the placenta for consumption, although the evidence for positive effects of human placentophagy is anecdotal and limited to self-reported surveys. Without any scientific evidence, individuals promoting placentophagy, especially in the form of placenta encapsulation, claim that it is associated with certain physical and psychosocial benefits. We found that there is no scientific evidence of any clinical benefit of placentophagy among humans, and no placental nutrients and hormones are retained in sufficient amounts after placenta encapsulation to be potentially helpful to the mother postpartum. In contrast to the belief of clinical benefits associated with human placentophagy, the Centers for Disease Control and Prevention recently issued a warning due to a case in which a newborn infant developed recurrent neonatal group B Streptococcus sepsis after the mother ingested contaminated placenta capsules containing Streptococcus agalactiae. The Centers for Disease Control and Prevention recommended that the intake of placenta capsules should be avoided owing to inadequate eradication of infectious pathogens during the encapsulation process. Therefore, in response to a woman who expresses an interest in placentophagy, physicians should inform her about the reported risks and the absence of clinical benefits associated with the ingestion. In addition, clinicians should inquire regarding a history of placenta ingestion in cases of postpartum maternal or neonatal infections such as group B Streptococcus sepsis. In conclusion, there is no professional responsibility on clinicians to offer placentophagy to pregnant women. Moreover, because placentophagy is potentially harmful with no documented benefit, counseling women should be directive: physicians should discourage this practice. Health care organizations should develop clear clinical guidelines to implement a scientific and professional approach to human placentophagy.