Parsley: A Comprehensive Guide Answering 50 Questions About This Green Wonder

Parsley, often hailed as a simple garnish, holds within its vibrant leaves a wealth of culinary, medicinal, and nutritional secrets waiting to be discovered. In this comprehensive guide, we delve deep into the world of parsley, unraveling its mysteries through answers to 50 intriguing questions. From its ancient roots in Mediterranean cuisine to its surprising health benefits and versatile uses in cooking, this article aims to be your definitive resource on this humble yet remarkable herb. Whether you’re curious about its varieties, curious about its cultivation, or seeking to uncover its medicinal properties, this guide will illuminate the wonders of parsley, transforming your perspective on this seemingly ordinary herb.

Parsley: 50 Questions & Answers

What is Parsley?

Parsley, scientifically known as Petroselinum crispum, is a popular herb used in culinary practices worldwide. It belongs to the Apiaceae family and is known for its vibrant green leaves, often used as a garnish or flavor enhancer in various dishes. There are two main types: curly-leaf parsley and Italian flat-leaf parsley, each carrying a slightly different flavor profile.

What is the scientific name of Parsley?

The scientific name for Parsley is Petroselinum crispum. This herbaceous plant is widely cultivated for its culinary uses and belongs to the family Apiaceae.

Does Parsley have other common names?

Yes, Parsley is known by various common names across different regions and cultures. Apart from its scientific name, it’s often referred to as garden parsley or common parsley. In some areas, it might also be known by specific names according to its variety, such as flat-leaf parsley or curly parsley.

What is Parsley’s traditional and modern medicinal use?

Traditionally, parsley has been utilized for its medicinal properties. It was historically believed to aid in digestion, alleviate bloating, and act as a diuretic. Moreover, due to its high vitamin content, particularly vitamin C, parsley was used to combat scurvy.

In modern times, parsley is still valued for its potential health benefits. It contains antioxidants, vitamins, and minerals that contribute to its reputation as a supportive element in maintaining overall health. Its extracts are sometimes used in herbal medicine for conditions like urinary tract infections, although more research is needed to validate its effectiveness in these areas. However, it’s important to note that while parsley offers nutritional value, its medicinal use should be approached with caution and preferably under professional guidance due to potential side effects in certain concentrations or forms.

What nutrients (vitamins, minerals, antioxidants, etc.) does Parsley contain?

Parsley is a nutrient powerhouse, boasting an array of vitamins, minerals, and antioxidants. It’s an excellent source of vitamin K, vital for blood clotting and bone health. It also packs a punch of vitamin C, supporting the immune system and skin health. Additionally, it contains vitamins A, and B9 (folate), and traces of other B vitamins, contributing to various bodily functions. As for minerals, parsley offers a notable amount of potassium, crucial for heart health, and smaller quantities of calcium, magnesium, and iron. Furthermore, it contains antioxidants like flavonoids and carotenoids, offering potential health benefits.

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Are there any potential side effects associated with Parsley?

While parsley is generally safe when used in culinary amounts, consuming large quantities or taking concentrated parsley supplements may lead to potential side effects. Some individuals might experience allergic reactions, especially if sensitive to other plants like carrots or celery. In high doses, parsley might stimulate uterine contractions, so pregnant women should avoid excessive intake. Moreover, parsley contains oxalates, which, when overly consumed, can contribute to kidney stone formation.

There’s no universal dosage for parsley, given its primarily culinary use. Typically, incorporating it into meals or using it as a garnish poses no risk. However, for concentrated supplements or medicinal purposes, it’s crucial to follow recommended guidelines. Herbalists may suggest dosages for specific conditions, but consulting a healthcare professional is advisable to ensure safe consumption.

Is Parsley safe for pregnant or breastfeeding women?

Parsley is generally safe in culinary amounts during pregnancy. However, consuming large quantities or concentrated forms (like supplements or parsley tea) isn’t recommended due to its potential to stimulate uterine contractions, which might pose a risk of miscarriage. For breastfeeding women, incorporating moderate amounts into meals is considered safe, but excessive intake should be avoided.

Can children safely consume Parsley?

Children can consume parsley in reasonable amounts used in cooking without significant concerns. However, it’s advisable to avoid giving them large quantities or concentrated forms. Allergies can occur, so it’s wise to introduce parsley gradually to monitor any adverse reactions, especially in younger children. As with any dietary change, moderation is key.

How should Parsley be prepared or consumed (e.g., tea, tincture, capsules, tablets)?

Parsley, a versatile herb, is commonly used fresh in various culinary dishes. It can also be consumed as a tea by steeping the leaves in hot water or used in tinctures for medicinal purposes. Capsules and tablets containing parsley extract are available, offering a more concentrated form for consumption.

Are there any contraindications or health conditions that Parsley may worsen?

Although parsley is generally safe for most people, individuals with kidney issues should be cautious as it contains oxalates that could potentially exacerbate kidney problems. Pregnant women should also moderate their intake as excessive consumption may stimulate the uterus and cause complications.

Where is Parsley usually sourced or cultivated?

Parsley is widely cultivated in temperate climates worldwide. It thrives in well-drained soil and is commonly found in Mediterranean regions, Europe, and parts of the United States, making it readily available in grocery stores and easily grown in home gardens.

Parsley is legal and widely accepted for culinary and medicinal use in the United States. It’s a common ingredient in various cuisines and is easily accessible in grocery stores and health food markets.

Are there any known allergens in Parsley?

While parsley allergies are rare, some individuals might experience allergic reactions, especially if they have allergies to other plants in the same family, such as carrots or celery. Skin rashes or oral irritation could occur in sensitive individuals, but severe allergic reactions are uncommon. As with any new substance, it’s advisable to start with small amounts to gauge individual tolerance levels.

May Parsley supplements contain contaminants like pesticides or heavy metals?

Parsley supplements, like many other herbal products, may carry contaminants like pesticides or heavy metals. These impurities can be present due to various factors such as soil quality, cultivation methods, or manufacturing processes. To ensure safety, opting for reputable brands that prioritize quality control and third-party testing can mitigate these risks.

Are there any known long-term effects of using Parsley?

In terms of known long-term effects of using Parsley, while it’s generally considered safe when consumed in culinary amounts, prolonged high doses or extensive use of Parsley supplements may pose potential risks. Parsley contains compounds like apiol and myristicin, which in excessive quantities, could potentially have adverse effects on health. However, concrete evidence on the long-term effects of supplement use alone is limited and requires further research for conclusive findings.

Do Parsley supplements have a specific shelf life or expiration date?

Parsley supplements typically have a specified shelf life or expiration date. Manufacturers usually indicate this information on the packaging. It’s advisable to adhere to these dates for optimal potency and safety. Storing supplements in a cool, dry place away from direct sunlight can help prolong their shelf life.

What is the best time of day to take Parsley?

There isn’t necessarily a definitive “best” time of day to take Parsley. However, some prefer taking it in the morning as part of their routine or alongside meals to aid digestion. Personal preferences and individual health needs can also influence the timing.

Should Parsley pills be taken with food or on an empty stomach?

Whether Parsley pills should be taken with food or on an empty stomach largely depends on personal tolerance and digestive sensitivity. Some individuals may experience stomach discomfort when taking supplements on an empty stomach, while others might not. Experimentation and observing how your body responds can help determine the most suitable approach for you.

Are there any dietary restrictions or guidelines while using Parsley?

Parsley, while generally safe, may have some considerations for individuals with specific dietary restrictions. Its high vitamin K content might interfere with blood-thinning medications, so those on such medications should moderate their parsley intake. Additionally, for individuals prone to kidney issues, excessive consumption of parsley may exacerbate problems due to its oxalate content. However, in typical culinary quantities, parsley shouldn’t pose significant issues for most people.

The recommended duration for using parsley can vary. As a culinary herb, it’s safe for regular consumption in everyday meals. As a supplement or herbal remedy, it’s advisable to follow the manufacturer’s instructions or consult a healthcare professional for guidance on duration, especially for prolonged or concentrated use.

Is it advisable to consult a healthcare professional before using Parsley?

Consulting a healthcare professional before incorporating parsley, especially as a supplement, is wise, especially for individuals with pre-existing medical conditions or those taking medications. This precaution ensures there are no potential interactions or adverse effects based on an individual’s specific health profile.

Are there any special precautions for storing Parsley supplements?

Storing parsley supplements requires attention to prevent degradation. Keep them in a cool, dry place away from direct sunlight and moisture. Airtight containers can help maintain the potency and freshness of the supplement for an extended period.

How does Parsley taste, and can it be mixed with other herbs or foods for palatability?

Parsley possesses a fresh, slightly peppery taste with hints of citrus. It’s versatile and blends well with various herbs and foods. It complements flavors in dishes like salads, soups, and sauces. Pairing it with mint, basil, or cilantro can enhance its taste profile, making it an appealing addition to different culinary creations.

What other supplements work well together with Parsley?

Parsley is a versatile herb that can complement various supplements, enhancing their effects. Here are some supplements that can work well with parsley:

  • Iron: Parsley contains compounds that may enhance iron absorption. Combining parsley with iron supplements or iron-rich foods could aid in better iron utilization by the body, benefiting individuals with iron deficiency or anemia.
  • Antioxidants (e.g., Vitamin E, A, or Selenium): Parsley contains antioxidants like vitamins A and C. Combining parsley with antioxidant supplements may offer enhanced protection against oxidative stress and support overall health.
  • Vitamin C: Combining parsley with vitamin C supplements enhances the absorption of iron from plant-based sources, contributing to better iron utilization in the body.
  • Turmeric (Curcumin): Parsley’s anti-inflammatory properties may synergize with curcumin, the active compound in Turmeric, for enhanced joint and immune support.
  • Chlorophyll: Parsley and chlorophyll supplements both contain chlorophyll, which supports detoxification and may promote healthy digestion when taken together.
  • Vitamin K2: Parsley is a good source of vitamin K, and combining it with vitamin K2 supplements can contribute to bone health and proper calcium metabolism.
  • B-complex vitamins: Parsley contains some B vitamins, and pairing it with a B-complex supplement can provide comprehensive support for energy metabolism and overall well-being.
  • Digestive Enzymes: Parsley’s natural compounds may aid digestion, and combining it with digestive enzyme supplements can further support nutrient absorption and digestive health.
  • Probiotics: Parsley, with its prebiotic properties, can complement the benefits of probiotic supplements by promoting a healthy environment for beneficial gut bacteria.
  • Garlic: Combining Parsley with Garlic supplements may enhance overall cardiovascular and immune support, as both herbs contain compounds with potential cardiovascular benefits.
  • Quercetin: Parsley and quercetin supplements can work together to support immune health, as quercetin is known for its antioxidant and anti-inflammatory properties.
  • Calcium and Magnesium: Parsley contains minerals like calcium and magnesium. Combining it with calcium and magnesium supplements can contribute to bone health, muscle function, and overall mineral balance.

As with any supplement combination, it’s essential to consult with a healthcare professional or a registered dietitian. 

Is there any scientific research or clinical evidence supporting Parsley’s effectiveness?

Scientific research on parsley reveals several potential health benefits but lacks extensive clinical evidence to firmly establish its effectiveness. Parsley contains antioxidants, vitamins, and minerals that contribute to its potential health perks, such as anti-inflammatory properties and potential cholesterol-lowering effects. However, more robust clinical studies are needed to validate these claims thoroughly.

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Are there any age restrictions for using Parsley (e.g., suitable for the elderly)?

Generally, parsley is considered safe for consumption across various age groups, including the elderly. However, individuals with specific health conditions or taking medications should consult healthcare professionals before incorporating large amounts into their diet due to its potential interactions with certain medications or conditions like kidney issues.

Does Parsley require a specific preparation method, such as decoction or infusion?

Parsley doesn’t necessarily require a specific preparation method. It can be consumed fresh, dried, or as a supplement. Both its leaves and roots can be used in cooking or steeped in hot water for an infusion. However, there isn’t a prescribed method, that allows flexibility in how it’s used and consumed.

Can Parsley be used topically (externally) in addition to internal consumption?

Parsley possesses qualities that make it suitable for topical use. Its anti-inflammatory and antimicrobial properties make it beneficial for skin health. Creating a parsley-infused oil or incorporating it into homemade skincare products like masks or creams can potentially offer skin benefits when applied externally.

Are there any known symptoms of overdose or excessive use of Parsley?

While parsley is generally safe when used in culinary amounts, excessive consumption or high doses of its essential oil or supplements may lead to adverse effects. Overdosing on parsley may cause issues like upset stomach, kidney problems, or allergic reactions in sensitive individuals. Moderation is key when incorporating it into diets or using concentrated forms. Consulting a healthcare provider for guidance on consumption levels is advisable to avoid potential overdoses.

What is Parsley’s mode of action within the body?

Parsley, scientifically known as Petroselinum crispum, operates within the body through various mechanisms owing to its rich nutrient profile. It contains antioxidants like flavonoids and carotenoids, aiding in neutralizing free radicals and reducing oxidative stress. Additionally, its high vitamin C content supports immune function and collagen synthesis. Parsley also harbors essential minerals such as potassium, which contributes to electrolyte balance and nerve function.

Are there any known synergistic effects when Parsley is combined with specific nutrients?

Combining parsley with specific nutrients can yield synergistic effects. For instance, pairing parsley with foods rich in iron, like spinach or lentils, may enhance iron absorption due to its vitamin C content, facilitating better utilization of this mineral. Moreover, parsley’s chlorophyll content could potentially work synergistically with the body’s detoxification processes when coupled with sulfur-containing compounds found in cruciferous vegetables like broccoli or Brussels sprouts.

Does Parsley have a distinct aroma or essential oil that may have therapeutic benefits?

Parsley possesses a distinctive aroma attributed to its essential oil, which contains compounds like myristicin and apiol. These components have been associated with potential therapeutic benefits, including antimicrobial properties and anti-inflammatory effects. The aroma itself has also been used in aromatherapy for its calming and refreshing qualities.

Are there any cultural or historical uses of Parsley that should be considered?

Historically, parsley has been revered in various cultures. Ancient Greeks and Romans used it to adorn victors’ heads and decorate tombs, symbolizing both victory and mourning. It was also believed to repel evil spirits in European folklore and found its way into traditional medicine practices across civilizations for digestive health and as a diuretic.

Does Parsley have any spiritual or ceremonial significance in certain traditions?

In specific traditions, parsley holds spiritual or ceremonial significance. In some Mediterranean cultures, it symbolizes joy and festivity, commonly used in wedding celebrations and rituals. In Judaic Passover traditions, parsley represents spring and renewal, playing a symbolic role on the Seder plate. Additionally, in certain pagan traditions, parsley carries associations with purification and protection rituals.

Are there any variations in Parsley’s potency based on its geographic origin?

Yes, there can be variations in parsley’s potency based on where it’s grown. Factors like soil composition, climate, and growing conditions influence the plant’s chemical composition. For instance, parsley grown in regions with rich, well-drained soil and ample sunlight might have higher concentrations of essential oils and nutrients, impacting its flavor and potential health benefits. Different varieties of parsley, such as curly leaf and Italian flat-leaf, also exhibit slight variations in taste and potency.

Does Parsley have a known effect on specific organs or body systems?

Parsley contains compounds like flavonoids, vitamins (C, K), and antioxidants that may offer benefits for certain organs and systems. Its high vitamin K content is associated with bone health, aiding in calcium absorption and reducing bone fragility. Additionally, its antioxidants may support heart health by combating oxidative stress. However, consuming excessive amounts, especially in supplement form, may have diuretic effects due to its high apiol content, potentially impacting the urinary system.

Are there any known interactions of Parsley with commonly prescribed medications?

Parsley, when consumed in culinary amounts, generally doesn’t interact significantly with common medications. However, parsley supplements or concentrated forms may affect certain medications, particularly blood thinners like warfarin due to its vitamin K content. Individuals on such medications should maintain consistent parsley intake and consult healthcare providers for potential adjustments.

What are the potential benefits and risks of long-term or chronic use of Parsley?

Long-term parsley consumption may offer benefits like improved antioxidant intake, aiding digestion, and potentially supporting bone health. Yet, chronic high intake might lead to excessive diuresis, disrupting electrolyte balance. Also, parsley contains compounds like furanocoumarins that, in high doses or prolonged use, could pose risks such as photosensitivity or allergic reactions in sensitive individuals.

Is it advisable to cycle on and off Parsley to prevent tolerance or dependence?

There isn’t explicit evidence supporting the need to cycle parsley intake to prevent tolerance or dependence. However, moderation is key. Regularly varying one’s diet to include a diverse range of nutrients is generally recommended. Consistently relying on high amounts of parsley, particularly in supplement form, might potentially lead to reduced efficacy over time or exacerbate specific health concerns, so moderation and variety are wise approaches.

Are there any precautions regarding driving or operating machinery while using Parsley?

When using parsley, driving or operating machinery isn’t typically cautioned against. However, some individuals might experience drowsiness or allergic reactions. If these occur, it’s advisable to avoid such activities until the effects subside.

Incorporating parsley into your diet doesn’t usually necessitate strict dietary restrictions or lifestyle changes. However, individuals with kidney issues may need to moderate their intake due to parsley’s oxalate content, which could potentially exacerbate kidney problems if consumed excessively.

Does Parsley have any specific recommendations for addressing common side effects?

Common side effects associated with parsley usage may include allergic reactions, skin irritation, or stomach upset. Managing these can involve discontinuing use and consulting a healthcare professional if symptoms persist or worsen.

Are there any known variations or subspecies of Parsley with different properties?

There are different varieties of parsley, mainly curly and flat-leaf (Italian) parsley. While they share many properties, some individuals prefer one over the other for taste or culinary purposes. However, their nutritional composition remains relatively similar.

Does Parsley have any documented cases of misuse or abuse?

Parsley isn’t commonly associated with misuse or abuse. Yet, some herbal remedies advocate for higher doses for medicinal purposes. However, excessive intake can lead to adverse effects, emphasizing the importance of moderation in its usage. Always consulting a healthcare professional before using it in unconventional ways is advisable.

Is Parsley regulated or approved for medicinal use in the United States?

Parsley isn’t regulated by the FDA for medicinal use in the United States. However, it’s widely used in traditional medicine and has various potential health benefits. While it’s available as a dietary supplement, its use for medicinal purposes isn’t officially approved or standardized.

Are there any known interactions of Parsley when combined with other medicinal herbs?

Parsley is generally considered safe when used in culinary amounts, but interactions can occur when combined with certain medicinal herbs or supplements. For instance, it might enhance the effects of blood-thinning herbs like garlic or ginkgo, potentially increasing the risk of bleeding. Consulting a healthcare professional before combining parsley with other herbs is advisable.

How does Parsley’s preparation or dosage change for acute versus chronic conditions?

The preparation and dosage of parsley can vary based on whether it’s used for acute or chronic conditions. For acute issues, like digestive discomfort, it’s commonly consumed as an infusion or in food quantities. Chronic conditions may benefit from higher doses, often taken as a supplement or concentrated extract under professional guidance.

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Are there any known withdrawal symptoms when discontinuing the use of Parsley?

Withdrawal symptoms from discontinuing parsley use are not widely reported or recognized. Since it’s mostly used in culinary amounts, abrupt cessation typically doesn’t result in withdrawal effects. However, if someone has been using large doses regularly, a sudden stop might cause minor adjustments in the body, but these aren’t extensively documented or acknowledged.

What are the best supplement brands of Parsley?

Renowned brands often ensure rigorous testing for contaminants and potency, providing a sense of reliability. Some reputable brands include Nature’s Way, Solaray, and Nature’s Answer, but personal experiences and professional recommendations should guide the choice.

Article References & Sources

At AncientHerbsWisdom, our content relies on reputable sources, including peer-reviewed studies, to substantiate the information presented in our articles. Our primary objective is to ensure that our content is thoroughly fact-checked, maintaining a commitment to accuracy, reliability, and trustworthiness.

  1. Parsley, raw nutrition facts and calories. (n.d.)
  2. Karimi, M. H., Ebadi, P., & Amirghofran, Z. (2012). Parsley and immunomodulation. Expert review of clinical immunology, 8(4), 295–297. 
  3. Yousofi, A., Daneshmandi, S., Soleimani, N., Bagheri, K., & Karimi, M. H. (2012). Immunomodulatory effect of Parsley (Petroselinum crispum) essential oil on immune cells: mitogen-activated splenocytes and peritoneal macrophages. Immunopharmacology and immunotoxicology, 34(2), 303–308. 
  4. DiNicolantonio, J. J., Bhutani, J., & O’Keefe, J. H. (2015). The health benefits of vitamin K. Open heart, 2(1), e000300. 
  5. Farzaei, M. H., Abbasabadi, Z., Ardekani, M. R., Rahimi, R., & Farzaei, F. (2013). Parsley: a review of ethnopharmacology, phytochemistry and biological activities. Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan, 33(6), 815–826. 
  6. Es-Safi, I., Mechchate, H., Amaghnouje, A., Kamaly, O. M. A., Jawhari, F. Z., Imtara, H., Grafov, A., & Bousta, D. (2021). The Potential of Parsley Polyphenols and Their Antioxidant Capacity to Help in the Treatment of Depression and Anxiety: An In Vivo Subacute Study. Molecules (Basel, Switzerland), 26(7), 2009. 
  7. Ogita, T., Vallejo Manaois, R., Wakagi, M., Oki, T., Takano Ishikawa, Y., & Watanabe, J. (2016). Identification and evaluation of antioxidants in Japanese parsley. International journal of food sciences and nutrition, 67(4), 431–440. 
  8. Slighoua, M., Mahdi, I., Amrati, F. E., Di Cristo, F., Amaghnouje, A., Grafov, A., Boucetta, N., Bari, A., & Bousta, D. (2021). Assessment of in vivo estrogenic and anti-inflammatory activities of the hydro-ethanolic extract and polyphenolic fraction of parsley (Petroselinum sativum Hoffm.). Journal of ethnopharmacology, 265, 113290. 
  9. Yamaguchi H. (1992). Immunomodulation by medicinal plants. Advances in experimental medicine and biology, 319, 287–297. 
  10. Mara de Menezes Epifanio, N., Rykiel Iglesias Cavalcanti, L., Falcão Dos Santos, K., Soares Coutinho Duarte, P., Kachlicki, P., Ożarowski, M., Jorge Riger, C., & Siqueira de Almeida Chaves, D. (2020). Chemical characterization and in vivo antioxidant activity of parsley (Petroselinum crispum) aqueous extract. Food & function, 11(6), 5346–5356. 
  11. Mahmood, S., Hussain, S., & Malik, F. (2014). Critique of medicinal conspicuousness of Parsley(Petroselinum crispum): a culinary herb of Mediterranean region. Pakistan journal of pharmaceutical sciences, 27(1), 193–202. 
  12. Landete J. M. (2013). Dietary intake of natural antioxidants: vitamins and polyphenols. Critical reviews in food science and nutrition, 53(7), 706–721. 
  13. Opara, E. I., & Chohan, M. (2014). Culinary herbs and spices: their bioactive properties, the contribution of polyphenols and the challenges in deducing their true health benefits. International journal of molecular sciences, 15(10), 19183–19202. 
  14. Camelia Papuc, Corina Predescu, Valentin Nicorescu, Georgeta Stefan and Isabela Nicorescu. Antioxidant Properties of a Parsley (Petroselinum crispum) Juice Rich in Polyphenols and Nitrites.
  15. Akbari, S., & Rasouli-Ghahroudi, A. A. (2018). Vitamin K and Bone Metabolism: A Review of the Latest Evidence in Preclinical Studies. BioMed research international, 2018, 4629383. 
  16. Hao, G., Zhang, B., Gu, M., Chen, C., Zhang, Q., Zhang, G., & Cao, X. (2017). Vitamin K intake and the risk of fractures: A meta-analysis. Medicine, 96(17), e6725. 
  17. Fusaro, M., Mereu, M. C., Aghi, A., Iervasi, G., & Gallieni, M. (2017). Vitamin K and bone. Clinical cases in mineral and bone metabolism : the official journal of the Italian Society of Osteoporosis, Mineral Metabolism, and Skeletal Diseases, 14(2), 200–206. 
  18. Pearson D. A. (2007). Bone health and osteoporosis: the role of vitamin K and potential antagonism by anticoagulants. Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 22(5), 517–544. 
  19.  Chang, H., Lei, L., Zhou, Y., Ye, F., & Zhao, G. (2018). Dietary Flavonoids and the Risk of Colorectal Cancer: An Updated Meta-Analysis of Epidemiological Studies. Nutrients, 10(7), 950. 
  20. Tang G. (2010). Bioconversion of dietary provitamin A carotenoids to vitamin A in humans. The American journal of clinical nutrition, 91(5), 1468S–1473S. 

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