Herb Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

Nan Gua Zi

Pumpkin seed · 南瓜子

Cucurbita moschata (Duch. ex Lam.) Duch. ex Poir. · Semen Cucurbitae Moschatae

Also known as: Nan Gua Ren (南瓜仁)

Nan Gua Zi (Pumpkin seed) plant

Images shown are for educational purposes only

Pumpkin seed is a gentle, food-grade herb best known in Chinese medicine for expelling intestinal parasites, especially tapeworms. It is also traditionally used to promote breast milk production after childbirth and to reduce postpartum swelling. Modern research has additionally explored its benefits for prostate health in men.

Category Parasite-expelling herbs (驱虫药)
Therapeutic focus Parasite Management Prostate Health Postpartum recovery Digestive Health

TCM Properties

Temperature

Neutral

Taste

Sweet (甘 gān)

Channels entered

Stomach, Large Intestine

Parts used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Herb Does

Every herb has a specific set of actions — here's what Nan Gua Zi does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Nan Gua Zi is primarily used to support these areas of health:

Parasite Management Prostate Health Postpartum recovery Digestive Health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Nan Gua Zi performs to restore balance in the body:

Expels Parasites Promotes Lactation Promotes Urination and Reduces Edema

How these actions work

'Kills parasites' (杀虫) means this herb paralyzes and helps expel intestinal worms from the body. Pumpkin seed is especially effective against tapeworms. The active component, cucurbitine (南瓜子氨酸), paralyzes the middle and rear segments of the tapeworm body, causing the worm to loosen its grip and be expelled. It is also used for roundworms, hookworms, pinworms, and blood flukes (schistosomiasis). Because its nature is sweet and neutral, it kills parasites without damaging the body's healthy Qi, making it one of the gentlest and safest antiparasitic herbs in the TCM pharmacopoeia.

'Promotes lactation' (下乳) means pumpkin seed can help increase breast milk production in new mothers who have insufficient milk flow after childbirth. Its sweet, nourishing quality gently supports the Stomach and intestinal system, which in TCM is the root of producing nourishment, including breast milk.

'Promotes urination and reduces edema' (利水消肿) means this herb helps the body eliminate excess fluid through urination. It is traditionally used for postpartum swelling of the hands and feet, as well as general fluid retention. Because it enters the Stomach and Large Intestine channels, it works through the digestive tract to regulate fluid metabolism.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Nan Gua Zi is used to help correct these specific patterns.

Why Nan Gua Zi addresses this pattern

Pumpkin seed directly addresses intestinal parasite infestation through its sweet, neutral nature and its entry into the Stomach and Large Intestine channels. Its active compound cucurbitine paralyzes the worm body (particularly effective on the middle and posterior segments of tapeworms), while its gentle, non-toxic quality means it can eliminate parasites without damaging the Stomach or Spleen Qi. This makes it especially useful for patients who are already weakened by a parasite burden and cannot tolerate harsher antiparasitic herbs. Its sweetness also mildly tonifies the digestive system, helping to restore the intestinal environment after the parasites are expelled.

A practitioner would look for one or more of these signs

Abdominal Pain

Intermittent abdominal pain, often around the navel

Loss Of Appetite

Reduced appetite with emaciation despite adequate food intake

Diarrhea

Loose stools or alternating constipation and diarrhea

Eye Fatigue

General fatigue and sallow complexion from chronic parasitic drain

Commonly Used For

These are conditions where Nan Gua Zi is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Intestinal Parasite

TCM Interpretation

In TCM, tapeworm infection is understood as an infestation of parasitic organisms (虫积 chóng jī) in the intestines that disrupts the normal function of the Stomach and Large Intestine. The parasites feed on the body's nutrients, leading to Qi and Blood deficiency over time. Symptoms include gnawing abdominal pain, insatiable hunger despite weight loss, and a sallow complexion. The Spleen and Stomach lose their ability to properly transform and transport food, and nourishment is diverted to the parasites rather than the body's own tissues.

Why Nan Gua Zi Helps

Pumpkin seed's cucurbitine directly paralyzes the middle and rear segments of the tapeworm, while its sweet, neutral nature means it does this without further weakening the already depleted digestive system. This is a critical advantage: many antiparasitic substances are harsh and can damage the Stomach Qi, but pumpkin seed is gentle enough to use even in debilitated patients. When combined with Bīng Láng (areca seed), which paralyzes the head and front segments of the tapeworm, the entire worm is disabled and can be expelled through bowel movements. Clinical reports have documented cure rates of 90-95% for this combination.

Also commonly used for

Hookworm Infection

Used as ground paste with honey or sugar on an empty stomach

Schistosomiasis

Traditional use for blood fluke infection; roasted seeds taken as powder

Hookworm Infection

Safe enough for use in children

Insufficient Lactation

Ground seeds with brown sugar and warm water for postpartum milk insufficiency

Edema

Postpartum swelling of hands and feet

Hemorrhoids

Decoction used externally as a wash

Whooping Cough

Roasted seeds ground to powder, taken with brown sugar water

Diabetes

Traditional and modern use for blood sugar support

Herb Properties

Every herb has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Neutral

Taste

Sweet (甘 gān)

Channels Entered

Stomach Large Intestine

Parts Used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

Dosage & Preparation

These are general dosage guidelines for Nan Gua Zi — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

30–60g

Maximum dosage

Up to 60-120g for single-dose antiparasitic use (e.g. tapeworm expulsion), taken as a ground emulsion on an empty stomach. This is a well-established traditional dosing for acute parasitic treatment.

Dosage notes

For decoction in general therapeutic use (promoting lactation, reducing edema), the standard range is 30-60g. For antiparasitic purposes (tapeworms, roundworms), higher single doses of 60-120g of the raw kernels are traditional, ground into an emulsion with water and honey, taken on an empty stomach. For schistosomiasis, historical clinical protocols used approximately 100g daily (in two divided doses) for 15-day courses. For prostate health support, modern usage suggests approximately 10-30g of raw seeds daily as a long-term food-therapy approach. Raw (unroasted) seeds retain more zinc and active compounds for prostate and antiparasitic use, while lightly toasted seeds are more palatable for general consumption.

Preparation

For antiparasitic use, the raw seeds are typically shelled and ground into a fine paste, then mixed with water to form an emulsion (乳剂), sweetened with honey or rock sugar, and taken on an empty stomach. This is NOT a standard decoction herb. For decoction use (e.g. for edema or lactation), 30-60g of the whole or crushed seeds can be boiled. For schistosomiasis, the seeds are dry-fried until yellow, ground to powder, and taken with sugar water. The seeds may also be pressed for their oil.

Processing Methods

In TCM, the same herb can be prepared in different ways to change its effects — here's how processing alters what Nan Gua Zi does

Processing method

Dry-fried (stir-fried without additions) until fragrant and lightly browned. The shell may be removed before or after frying.

How it changes properties

Dry-frying makes the seeds more aromatic and easier to chew and digest, reducing the raw oiliness that can cause Qi stagnation and bloating. The thermal nature remains neutral to slightly warm. However, frying significantly reduces the zinc content (from approximately 65 mcg/g down to less than 1 mcg/g), which may diminish the prostate-supportive benefits associated with zinc.

When to use this form

When using pumpkin seed for general digestive support, postpartum lactation, or as a food-medicine. Also preferred when the raw oily quality causes nausea or bloating. For prostate health or maximum antiparasitic potency, the raw form may be preferable because it retains more active constituents.

Common Herb Pairs

These ingredients are traditionally combined with Nan Gua Zi for enhanced therapeutic effect

Bing Lang
Bing Lang Nán Guā Zǐ 80-125g : Bīng Láng 60-100g (decoction)

This is the most classical and important herb pair for Nán Guā Zǐ. Pumpkin seed paralyzes the middle and rear segments of tapeworms, while Bīng Láng (areca seed) paralyzes the head and front segments. Together they disable the entire worm, and Bīng Láng's Qi-moving, downward-draining action helps expel the paralyzed worm through the bowels. Clinical cure rates for tapeworm with this combination reach 90-95%, far exceeding either herb used alone.

When to use: Tapeworm infection of any type, including beef tapeworm and pork tapeworm. Administer pumpkin seed first, wait 1-2 hours, then give Bīng Láng decoction, followed by a saline purgative if needed.

Shi Liu Pi
Shi Liu Pi 1:1 (each approximately 30g), taken daily for two days

Pomegranate rind (Shí Liú Pí) and pumpkin seed both have antiparasitic actions but through different mechanisms. Shí Liú Pí contains alkaloids that are strongly toxic to tapeworms and roundworms, while pumpkin seed provides a gentler paralytic action. Combined, they broaden the spectrum and increase the potency of parasite elimination.

When to use: Stubborn or mixed intestinal parasite infections, particularly when tapeworm coexists with roundworm. Sometimes combined together with Bīng Láng as a three-herb protocol.

Chen Pi
Chen Pi Nán Guā Zǐ 30-60g : Chén Pí 6-9g

Chén Pí (tangerine peel) regulates Qi and harmonizes the Stomach while drying Dampness. When paired with pumpkin seed, Chén Pí's Qi-moving action enhances the fluid-draining function of pumpkin seed and prevents the stagnation that can occur from taking large quantities of the oily seeds.

When to use: Postpartum edema with digestive sluggishness, or when using pumpkin seed in larger doses where Qi stagnation from the oily nature of the seeds is a concern.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Shi Jun Zi
Nan Gua Zi vs Shi Jun Zi

Both are antiparasitic herbs with sweet taste and relatively gentle nature, making them safe for children. However, Shǐ Jūn Zǐ (Quisqualis fruit) is the primary herb for roundworm (ascariasis) and is warm in nature, while Nán Guā Zǐ is neutral and excels specifically at treating tapeworm. Choose Shǐ Jūn Zǐ for roundworm in children and Nán Guā Zǐ for tapeworm or schistosomiasis. Nán Guā Zǐ has the additional advantage of promoting lactation and reducing edema, actions that Shǐ Jūn Zǐ lacks.

Bing Lang
Nan Gua Zi vs Bing Lang

Both kill tapeworms, but they work on different parts of the worm body and are most effective when combined. Bīng Láng is warm, bitter, and pungent with a strong Qi-moving, downward-draining action; it also treats food stagnation, promotes urination, and addresses a wider range of conditions beyond parasites. Nán Guā Zǐ is sweet, neutral, and much gentler with virtually no toxicity, making it safer for long-term or high-dose use and suitable for debilitated patients. For tapeworm, both together are far more effective than either alone.

Fei Zi
Nan Gua Zi vs Fei Zi

Fěi Zǐ (torreya seed) is another sweet, neutral antiparasitic seed that is gentle and can be eaten as food. Like pumpkin seed, it is safe and well-tolerated. However, Fěi Zǐ is primarily indicated for hookworm and roundworm and also moistens the Lungs and Large Intestine to treat constipation. Nán Guā Zǐ is the superior choice specifically for tapeworm and schistosomiasis, and uniquely promotes lactation.

Identity & Adulterants

Related species and common adulterations to be aware of when sourcing Nan Gua Zi

Nan Gua Zi (pumpkin seed from Cucurbita moschata) may be confused with seeds from other Cucurbita species, such as C. pepo (used more commonly in Western herbal medicine and European BPH research) or C. maxima. While their effects overlap significantly, the species are botanically distinct and their phytochemical profiles differ somewhat. In TCM markets, pumpkin seeds are sometimes confused with or substituted by other cucurbit seeds such as Dong Gua Zi (冬瓜子, winter melon seed, from Benincasa hispida), which has very different therapeutic properties (clears Heat, expels pus). The two can be distinguished by size and shape: Nan Gua Zi is broader, more oval, and yellowish-white, while Dong Gua Zi is flatter, more elongated, and whiter. Xi Gua Zi (西瓜子, watermelon seed) is another potential substitute but has different clinical applications.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any herb.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Nan Gua Zi

Non-toxic

Nan Gua Zi is classified as non-toxic and is widely consumed as both food and medicine. Animal studies show that concentrated pumpkin seed preparations at normal doses (2-10 g/kg in mice) produce no toxic effects. At very high doses (4 g in mice), temporary and reversible changes in liver, lung, and kidney tissue have been observed, including mild hepatocyte atrophy and fatty infiltration, but these resolve quickly after discontinuation. The active anthelmintic compound cucurbitine (南瓜子氨酸) can cause excitability in mice at large doses. Overall, this herb has an excellent safety profile at standard therapeutic doses.

Contraindications

Situations where Nan Gua Zi should not be used or requires extra caution

Caution

Overconsumption can cause Qi stagnation and epigastric stuffiness (壅气滞膈), as noted in the Ben Cao Gang Mu Shi Yi. Those prone to bloating and Qi stagnation should limit intake.

Caution

People with Stomach Heat should use with caution, as excessive consumption may worsen epigastric distension and discomfort.

Caution

People with liver disease should use cautiously due to the high fat content, which may increase metabolic burden on the liver.

Caution

People who have had gallbladder removal should use with caution, as the high oil content requires bile for digestion, and impaired bile storage may lead to indigestion.

Caution

Those with significant hyperlipidemia should moderate intake, as the high fat content may contribute to elevated blood lipid levels.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at food-level amounts during pregnancy. Nan Gua Zi is a food-grade herb with no known uterine-stimulating or teratogenic properties. Classical sources even note that the pumpkin stem (南瓜蒂) has been used for threatened miscarriage, suggesting the plant family is not harmful to pregnancy. However, therapeutic doses (30-60g or more daily for antiparasitic purposes) have not been formally evaluated for pregnancy safety, so large medicinal doses should only be used under practitioner guidance.

Breastfeeding

No specific safety concerns have been identified for use during breastfeeding. Nan Gua Zi is traditionally used to promote lactation (下乳) in postpartum women with insufficient breast milk, and classical formulas specifically recommend it for this purpose. It is a food-grade substance consumed widely without reported adverse effects on breastfeeding infants. Standard food and therapeutic doses are generally considered safe during lactation.

Children

Nan Gua Zi has a long history of safe use in children as an antiparasitic, particularly for pinworms and roundworms. Its mild, non-toxic nature and pleasant taste make it well-suited for pediatric use. For children, the dose is typically reduced to about one-third to one-half the adult dose (approximately 10-30g), adjusted by age and body weight. The seeds can be shelled, lightly toasted, and given to children to chew directly on an empty stomach, or ground into a paste with honey or sugar. For very young children (under 3 years), the seeds should be ground to powder or made into an emulsion to prevent choking.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Nan Gua Zi

No well-documented serious drug interactions have been identified for Nan Gua Zi. However, the following theoretical considerations apply:

  • Antihypertensive medications: Animal studies show that cucurbitine (南瓜子氨酸) can raise blood pressure in rabbits at high doses. While this effect has not been demonstrated in humans at normal dietary amounts, individuals on blood pressure medications should be aware of this theoretical interaction.
  • Anticoagulant/antiplatelet drugs: The high vitamin E and unsaturated fatty acid content of pumpkin seeds could theoretically have mild effects on platelet function. Clinical significance at standard doses is unlikely, but monitoring may be prudent for individuals on warfarin or similar drugs.

Overall, Nan Gua Zi has an excellent safety profile with no serious documented pharmacological interactions at food-level or standard therapeutic doses.

Dietary Advice

Foods and dietary considerations when taking Nan Gua Zi

Avoid eating lamb (羊肉) while taking Nan Gua Zi in quantity, as the traditional literature warns this combination may cause Qi stagnation leading to bloating and chest stuffiness. Avoid excessive coffee when taking pumpkin seeds as it may impair iron absorption. As Nan Gua Zi is high in fat, people with weak digestion should moderate their intake and avoid combining it with other heavy, greasy foods. When using the seeds for antiparasitic purposes, they are most effective taken on an empty stomach in the morning.

Botanical Description

Physical characteristics and morphology of the Nan Gua Zi source plant

Nan Gua Zi is the dried mature seed of Cucurbita moschata (Duch. ex Lam.) Duch. ex Poir., a member of the Cucurbitaceae (gourd) family. The pumpkin plant is an annual trailing vine with long, hollow, angular stems that can extend over ten metres. The stems root at the nodes wherever they touch the ground. The leaves are large, resembling those of the hollyhock or lotus in size, with a broadly heart-shaped outline. Bright yellow, funnel-shaped flowers appear in summer and autumn. The fruit is large and round to oblong, with a thick rind that may be green, yellow, or orange-red, often ribbed. The flesh is thick and deep yellow-orange.

The seeds are flat, oval to elliptical, about 1.2–2 cm long and 0.7–1.2 cm wide, with a slightly pointed tip. The outer surface is pale yellowish-white with fine hairs especially along the margins. Beneath the thick seed coat lies a thin greenish endosperm layer enclosing two thick, oily, yellow cotyledons. The plant thrives in warm climates on sandy, fertile soil and is widely cultivated throughout China and around the world.

Sourcing & Harvesting

Where Nan Gua Zi is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Autumn (July to October), when the pumpkin fruit is fully mature. Seeds are removed from the ripe fruit, washed, and sun-dried.

Primary growing regions

Nan Gua Zi is produced throughout China wherever pumpkins are cultivated. The primary producing regions traditionally recognized for quality include Zhejiang, Jiangxi, Hebei, and Shanxi provinces. Research has noted that seeds from Xuzhou (Jiangsu) showed particularly strong activity against schistosomiasis. Pumpkin is originally a New World crop that entered China during the Ming Dynasty (likely 16th century), and it is now ubiquitous across Chinese agriculture. There is no strongly defined dao di (terroir) region for this herb, as pumpkin is a very widely cultivated crop.

Quality indicators

Good quality Nan Gua Zi seeds are dry, plump, and full, with a clean yellowish-white outer shell. The surface may have fine hairs, especially along the edges. When the shell is removed, the kernel should reveal a thin greenish endosperm layer and two thick, oily, yellow cotyledons. The seeds should have a pleasant, slightly fragrant aroma and a mildly sweet taste. Avoid seeds that are shrivelled, discoloured, mouldy, insect-damaged, or have darkened shells. For antiparasitic use, fresh seeds (current year's harvest) are generally preferred, though research has shown that one-year-old seeds retain similar efficacy against schistosomiasis.

Classical Texts

Key passages from the classical Chinese medical texts that describe Nan Gua Zi and its therapeutic uses

《本草纲目》 Ben Cao Gang Mu (Li Shizhen, Ming Dynasty)

On the pumpkin plant and its seeds:
Original: 「其子如冬瓜子。」
Translation: "Its seeds resemble those of the winter melon."

Li Shizhen's entry on the pumpkin is the earliest detailed Chinese botanical description of the plant, documenting its introduction from abroad (南番) via the Fujian and Zhejiang coast.

《本草纲目拾遗》 Ben Cao Gang Mu Shi Yi (Zhao Xuemin, Qing Dynasty)

Original: 「多食壅气滞膈。」
Translation: "Eating too much causes Qi obstruction and stagnation in the diaphragm area."

《本草骈比》 Ben Cao Pian Bi

Original: 「止顿咳，消肿。」「治百日咳，痔疮。」
Translation: "Stops paroxysmal cough; reduces swelling." "Treats whooping cough and hemorrhoids."

《现代实用中药》 Xian Dai Shi Yong Zhong Yao

「驱除绦虫。」
Translation: "Expels tapeworms."

Historical Context

The history and evolution of Nan Gua Zi's use in Chinese medicine over the centuries

The pumpkin (Cucurbita moschata) is not native to China. It was introduced from the Americas during the Ming Dynasty, likely in the mid-16th century. Li Shizhen's Ben Cao Gang Mu (1578) contains the earliest detailed Chinese record, stating that the pumpkin "originated from southern foreign lands and entered via Fujian and Zhejiang." Modern historical scholarship has challenged this narrative, presenting evidence that pumpkin cultivation actually spread southward from the Beijing region rather than northward from the coast. Regardless of the exact route, the pumpkin rapidly became one of China's most important food crops, valued for its hardiness and high yield. During famines, it served as a critical survival food.

As a medicinal substance, Nan Gua Zi gained prominence primarily as a safe, palatable antiparasitic agent. Its use against tapeworms, roundworms, and schistosomiasis became well established in folk medicine and later in clinical practice. In the mid-20th century, Chinese researchers conducted extensive studies on pumpkin seeds for treating schistosomiasis (血吸虫病), a major public health concern. More recently, both Chinese and Western research has focused on pumpkin seed's benefits for prostate health. The name "Nan Gua" (南瓜, "southern melon") reflects the early belief that it arrived from the south, though other regional names include 倭瓜 (wō guā), 窝瓜 (wō guā), 北瓜 (běi guā, "northern melon"), and 饭瓜 (fàn guā, "rice melon"), reflecting its role as a staple food.

Modern Research

4 published studies investigating the pharmacological effects or clinical outcomes of Nan Gua Zi

1

GRANU Study: Effects of pumpkin seed in men with lower urinary tract symptoms due to benign prostatic hyperplasia (RCT, 2015)

Vahlensieck W, Theurer C, Pfitzer E, Patz B, Banik N, Engelmann U. Urologia Internationalis, 2015, 94(3): 286-295.

This large randomized, placebo-controlled trial enrolled 1,431 men aged 50-80 with BPH-related urinary symptoms. Participants received either pumpkin seed (5 g twice daily), pumpkin seed extract capsules (500 mg twice daily), or placebo for 12 months. While pumpkin seed extract did not meet the primary endpoint versus placebo, whole pumpkin seed showed a descriptively significant higher response rate (58.5% vs 47.3%). The study products were well tolerated, and the authors concluded that pumpkin seed led to a clinically relevant reduction in symptom scores.

Link
2

Pumpkin seed oil vs tamsulosin for BPH symptom relief (Single-blind RCT, 2021)

Alireza A, et al. BMC Urology, 2021, 21: 147.

This single-blind RCT compared pumpkin seed oil (360 mg twice daily) with tamsulosin (0.4 mg nightly) in 73 men with BPH over 3 months. Both treatments significantly reduced urinary symptom scores and improved quality of life. Tamsulosin produced a somewhat greater initial reduction, but improvement rates between 1 and 3 months were comparable. Notably, no side effects were reported in the pumpkin seed oil group, while the tamsulosin group experienced dizziness, headache, and retrograde ejaculation.

PubMed
3

Effects of pumpkin seed oil and saw palmetto oil in Korean men with symptomatic BPH (RCT, 2009)

Hong H, Kim CS, Maeng S. Nutrition Research and Practice, 2009, 3(4): 323-327.

A 12-month randomized, double-blind, placebo-controlled trial in 47 Korean men with BPH. Patients received placebo, pumpkin seed oil (320 mg/day), saw palmetto oil (320 mg/day), or both combined. The pumpkin seed oil group showed reduced symptom scores by 3 months, with improved urinary flow rate reaching statistical significance by 6 months. The authors concluded that pumpkin seed oil may be a clinically safe and potentially effective complementary treatment for BPH.

PubMed
4

Meta-analysis of pumpkin seed soft extract for LUTS/BPH (Meta-analysis, 2022)

Vahlensieck W, Heim S, Patz B, Sahin K. Clinical Phytoscience, 2022, 8: 13.

This meta-analysis pooled individual patient data from two 12-month randomized placebo-controlled trials (the Bach and GRANU studies) examining pumpkin seed extract for lower urinary tract symptoms associated with BPH. Although one study showed clear benefit and the other did not individually reach significance, the pooled analysis showed that more patients in the pumpkin seed group achieved clinically meaningful symptom improvement (at least 5 IPSS points) after 12 months compared to placebo. The authors concluded that patients with moderate symptoms may benefit from pumpkin seed extract treatment.

Link

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.