# Snow Pea (Pisum sativum var. macrocarpon)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/snow-pea
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-24
**Evidence Score:** 2 / 10
**Category:** Legume
**Also Known As:** Pisum sativum var. macrocarpon, Chinese pea pods, Mangetout, Sugar peas, Snap peas, Edible-podded peas, Chinese snow peas

## Overview

Snow peas (Pisum sativum var. macrocarpon) are a leguminous vegetable containing phytosterols such as β-sitosterol (14 mg/100g) and phenolic [antioxidant](/ingredients/condition/antioxidant)s with in vitro DPPH-scavenging activity of 500–1000 µM TE/100g. β-Sitosterol competes with dietary cholesterol for intestinal absorption by displacing it from mixed micelles, offering a food-level mechanism for modest cholesterol management.

## Health Benefits

• May support normal cholesterol levels through phytosterol content (17.7 mg/100g including 14 mg β-sitosterol) - food-based evidence only
• Provides [antioxidant activity](/ingredients/condition/antioxidant) (500-1000 µM TE/100g) from phenolic compounds that remain stable after cooking - in vitro evidence
• Contains the phytoalexin (+)-pisatin in higher amounts than green peas when elicited - in vitro evidence only
• May exhibit estrogen-modulating effects based on cell culture studies - preliminary in vitro evidence
• Offers dietary fiber (2.6-2.8 g/100g) and low fat content (0.27-0.30 g/100g) - nutritional data only

## Mechanism of Action

β-Sitosterol (14 mg/100g) structurally resembles cholesterol and competitively inhibits its incorporation into intestinal mixed micelles, reducing cholesterol uptake via Niemann-Pick C1-Like 1 (NPC1L1) transporter sites. Phenolic compounds including flavonoids act as hydrogen-donating [free radical scaveng](/ingredients/condition/antioxidant)ers, inhibiting lipid peroxidation chain reactions measured in vitro at 500–1000 µM Trolox equivalents per 100g. The phytoalexin pisatin, a pterocarpan unique to Pisum species, is biosynthesized via the phenylpropanoid pathway and exhibits [antimicrobial](/ingredients/condition/immune-support) activity by disrupting fungal membrane integrity, though its direct human pharmacological targets remain uncharacterized.

## Clinical Summary

No randomized controlled trials have been conducted specifically on snow pea extract or whole snow peas in human subjects for therapeutic endpoints. Evidence for cholesterol modulation derives from food-level phytosterol data; clinical trials on phytosterol-enriched foods generally require 1.5–3 g/day of plant sterols to achieve a 7–12% LDL reduction, far above the ~0.18 mg provided by a typical 100g snow pea serving. [Antioxidant activity](/ingredients/condition/antioxidant) (500–1000 µM TE/100g) is based entirely on in vitro assays such as DPPH and FRAP, which do not reliably predict bioavailable antioxidant effects in vivo. Overall, the current evidence is observational and mechanistic; snow peas should be considered a nutrient-dense food rather than a clinically validated supplement ingredient.

## Nutritional Profile

Snow peas (Pisum sativum var. macrocarpon) per 100g raw: Calories ~42 kcal, Water ~88.9g, Protein ~2.8g (moderate bioavailability; contains antinutritional factors including trypsin inhibitors and lectins that are largely deactivated by cooking), Total Carbohydrates ~7.6g, Dietary Fiber ~2.6g (mix of soluble pectin and insoluble cellulose/hemicellulose), Sugars ~4.0g, Fat ~0.2g. Key Vitamins: Vitamin C ~60mg (high; significantly reduced by heat - up to 50% loss with boiling), Vitamin K1 ~25µg, Folate ~42µg (B9), Vitamin A (as beta-carotene) ~54µg RAE, Thiamine B1 ~0.15mg, Riboflavin B2 ~0.08mg, Vitamin B6 ~0.16mg. Key Minerals: Potassium ~200mg, Iron ~2.1mg (non-heme; bioavailability enhanced by co-consumption with vitamin C), Magnesium ~24mg, Phosphorus ~53mg, Calcium ~43mg, Manganese ~0.24mg, Zinc ~0.27mg. Bioactive Compounds: Phytosterols ~17.7mg total (β-sitosterol ~14mg, campesterol and stigmasterol in minor amounts), Phenolic compounds including flavonoids (kaempferol, quercetin glycosides) and hydroxycinnamic acids contributing ~500-1000µM TE/100g [antioxidant](/ingredients/condition/antioxidant) capacity (FRAP/DPPH) with notable thermal stability post-cooking; chlorophyll a and b ~10-15mg combined contributing green pigmentation; carotenoids including lutein and zeaxanthin ~740µg (relevant to ocular health); the phytoalexin (+)-pisatin present at inducible concentrations notably higher than shelled green peas under elicitation conditions (exact constitutive concentration not well-characterized in fresh tissue). Antinutrients: Phytic acid ~0.2-0.5g (reduces mineral bioavailability; reduced by cooking and germination), oxalates at low levels (~10-15mg). Bioavailability note: Lightly steamed or stir-fried snow peas retain more vitamin C and folate than boiled; the edible pod delivers fiber and phytosterols not present in shelled pea products.

## Dosage & Preparation

No clinically studied dosage ranges exist for snow pea supplements due to the absence of human trials. Research has only used elicited extracts with pisatin concentrations reported as μg/g dry weight in cell culture studies. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Snow peas are generally recognized as safe for most adults when consumed as food, with no established upper intake limits. Individuals with legume allergies, particularly those sensitized to Pisum sativum pollen or seed proteins (e.g., Pis s 1 vicilin allergen), may experience IgE-mediated reactions ranging from oral allergy syndrome to systemic responses. Snow peas contain moderate oxalate and purine levels, so individuals with gout, hyperuricemia, or calcium oxalate kidney stones should moderate intake. No clinically significant drug interactions have been documented at food consumption levels, though extremely high phytosterol intake from fortified sources may theoretically reduce fat-soluble vitamin (A, D, E, K) absorption when consumed simultaneously.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on snow pea were identified in the available research. The evidence is limited to in vitro studies showing dose-dependent estrogenic activity and effects on MCF-7/T47D breast cancer cell proliferation, with antiestrogenic effects when combined with 17β-estradiol.

## Historical & Cultural Context

While no specific traditional medicinal uses are documented, snow peas have been cultivated for culinary purposes particularly in East Asian cuisine. Modern varieties selected for their edible pods have been grown since at least the 19th century.

## Synergistic Combinations

Green tea extract, turmeric, resveratrol, quercetin, vitamin C

## Frequently Asked Questions

### How much β-sitosterol is in snow peas?

Snow peas contain approximately 17.7 mg of total phytosterols per 100g, of which β-sitosterol accounts for roughly 14 mg. This is a meaningful dietary contribution but falls well below the 1,500–3,000 mg/day of plant sterols shown in clinical trials to reduce LDL cholesterol by 7–12%, meaning snow peas alone cannot replicate pharmaceutical-level cholesterol-lowering effects.

### Does cooking snow peas destroy their antioxidants?

Research indicates that the phenolic antioxidants in snow peas are relatively heat-stable, retaining measurable DPPH-scavenging activity in the 500–1000 µM Trolox equivalent range per 100g even after cooking. Brief methods such as stir-frying or steaming are preferable to prolonged boiling, which can leach water-soluble polyphenols into cooking water. It is important to note that all supporting data comes from in vitro assays and may not directly reflect antioxidant bioavailability in the human body.

### What is pisatin and why does it matter in snow peas?

Pisatin is a pterocarpan phytoalexin biosynthesized by Pisum sativum via the phenylpropanoid and isoflavonoid pathways in response to fungal or microbial stress. It disrupts the membrane integrity of fungal pathogens and is one of the first plant phytoalexins ever chemically characterized. Its direct relevance to human health remains largely theoretical, as no clinical studies have evaluated pisatin absorption, metabolism, or pharmacological activity in humans.

### Are snow peas safe to eat if you have a legume allergy?

Snow peas belong to the Fabaceae family and share allergenic proteins with other legumes, including vicilin-class proteins such as Pis s 1. Individuals with diagnosed pea or legume allergies may experience cross-reactive IgE-mediated symptoms ranging from oral tingling to urticaria or, rarely, anaphylaxis. Anyone with a known legume allergy should consult an allergist before consuming snow peas, particularly in concentrated or extracted supplement form.

### Can snow peas help lower cholesterol naturally?

Snow peas contain β-sitosterol (14 mg/100g), which mechanistically competes with cholesterol at the NPC1L1 intestinal absorption transporter, but the quantity per typical serving is too small to produce clinically measurable LDL reductions on its own. Broader dietary patterns rich in legumes, fiber, and phytosterols have been associated with modest cholesterol improvements in observational studies. For meaningful LDL reduction via plant sterols, health authorities recommend 1.5–3 g/day from fortified foods or supplements, a level not achievable through snow pea consumption alone.

### What is the difference between snow peas and green peas in terms of nutritional content?

Snow peas and green peas are different varieties of Pisum sativum with distinct nutrient profiles. Snow peas contain edible pods with lower overall protein but similar phytosterol content (17.7 mg/100g), while green peas have higher protein and fiber concentrated in the seeds. Snow peas also produce higher levels of the phytoalexin pisatin under certain growing conditions, making them biochemically distinct despite being the same species.

### Can I get sufficient phytosterols for cholesterol support from eating snow peas alone?

A 100g serving of snow peas provides 17.7 mg of phytosterols, but clinical evidence suggests 2-3 grams daily may be needed for meaningful cholesterol effects. You would need to consume approximately 12-18 cups of raw snow peas daily to meet therapeutic doses, making food sources alone insufficient for therapeutic intent. Snow peas are best used as part of a phytosterol-rich diet rather than as a standalone source for cholesterol management.

### Are there safety concerns with consuming raw versus cooked snow peas?

Raw snow peas are safe for most people, though the legume proteins may trigger reactions in those with pea allergies. Cooking snow peas does not destroy their antioxidant content meaningfully, and cooking may reduce lectins and other anti-nutritive compounds found in raw legumes. Both raw and cooked preparations are safe for general consumption, though cooking may improve digestibility and reduce potential gastrointestinal discomfort in sensitive individuals.

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