Parsley Boosts Immunity, Curbs Inflammation and Fights Cancer

Parsley (Petroselinum crispum) fights cancer reduces inflammation.

Parsley (Petroselinum crispum) fights cancer and reduces inflammation.

Parsley may be a great garnish. And it can seriously freshen the breath. But research proves that parsley also boosts the immune system, reduces inflammation and fights off cancer.

Multiple studies show that Parsley (Petroselinum crispum) contains significant anti-inflammatory properties, boosts liver health, is antioxidant and even anti-carcinogenic. It also supplies numerous nutrients and relaxes smooth muscles.

Parsley inhibits cancer growth

A 2017 study from Germany’s University of Rostock studied parsley root extract. They tested the extract against malignant and benign breast cancer cells.

The researchers found the parsley extract killed the breast cancer cell lines at a rates ranging from 70 percent to 80 percent.

This and other research has connected parsley’s apigenin to cancer inhibition. Apigenin is a flavone. A 2016 study from Texas A&M University found that apigenin from parsley inhibited the growth of uterine cancer cells.

Research published in 2011 from China’s Jiangsu Polytechnic College of Agriculture and Forestry found that apigenin also blocked the action of MEK kinase 1, which in turn prevented bladder cancer cells from migrating and thus inhibited tumor growth.

In this case, the apigenin compound was found with the ability to stop tumor growth by blocking tumors from creating blood vessels.

Research shows Parsley’s anti-inflammatory effect

Hungarian researchers confirmed that parsley boosted the body’s ability to fight inflammation in a 2012 study.

The research found that parsley contained numerous nutrients and bioactive constituents, including several flavonoids and cumarins. They found that in addition to its anti-cancer properties, Parsley slows inflammation and neutralizes oxidative radicals (free radicals).

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Parsley reduces complications, increases detoxification

Parsley’s ability to encourage healing has also been shown in other studies.

For example, a study published in 2012 from Turkey’s Hacettepe University Faculty of Medicine found that increased parsley consumption was associated with fewer complications after hematopoietic (bone marrow) stem cell transplantation in children.

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In this study, the diets of 41 children who underwent the stem cell transplantation were analyzed. Improved outcomes were seen among those eating more Parsley, as well as those children who ate onions, bulgur, yogurt and bazlama (a Turkish yeast bread).

Furthermore, Denmark’s Institute of Food Safety and Toxicology conducted a study in 1999 on 14 people using parsley. In two study periods, the subjects included about four milligrams of parsley every day for one of two weeks.

The researchers found that taking Parsley boosted levels of erythrocyte glutathione reductase and superoxide dismutase in the subjects. These two enzymes increase detoxification efforts of the body, as they help remove oxidization agents that can harm tissues and blood vessels.

Parsley is rich in nutrients

Parsley is also rich in numerous antioxidant nutrients, including vitamin A, vitamin C, vitamin E, beta carotene, lutein, cryptoxanthin, zeaxanthin, folate and is one of the greatest sources of vitamin K, with 1640 micrograms per gram – over 12 times the U.S. DRI (dietary reference intake) of 90-120 micrograms per day. One hundred grams of Parsley also contains more than double the RDA for vitamin C and almost triple the RDA of vitamin A.

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The ability of Parsley to relax smooth muscles appears to come from its blocking of the polymerization of actin. This has significant importance to asthmatics, as a severe asthmatic attack will accompany the over-contraction of the smooth muscles around the lungs. Relaxing those smooth muscles is one key component of urgent care in asthmatic attacks.

Other bioactive constituents in Parsley include eugenol, crisoeriol, luteolin and apiin. Eugenol has been used by traditional doctors as an antiseptic and pain-reliever in cases of gingivitis and periodontal disease, and has been shown to reduce blood sugar levels in diabetics.

Cumarins are natural blood thinning agents, as they provide anti-coagulating properties. This can aid circulation, especially in cases of edema (swelling). However, the cumarin content in Parsley is minor, and balanced by its many other nutrients. So it does not come with the side effects known for wayfarin and other isolated anti-coagulants.

The antioxidant nutrients in parsley have been shown in other research to reduce the oxidation of lipids, relating directly to vision disorders, heart disease, dementia and other inflammation-related conditions.


Schröder L, Koch J, Mahner S, Kost BP, Hofmann S, Jeschke U, Haumann J, Schmedt J, Richter DU. The Effects of Petroselinum Crispum on Estrogen Receptor-positive Benign and Malignant Mammary Cells (MCF12A/MCF7). Anticancer Res. 2017 Jan;37(1):95-102.

Lim W, Park S, Bazer FW, Song G. Apigenin Reduces Survival of Choriocarcinoma Cells by Inducing Apoptosis via the PI3K/AKT and ERK1/2 MAPK Pathways. J Cell Physiol. 2016 Dec;231(12):2690-9. doi: 10.1002/jcp.25372.

Pápay ZE, Kósa A, Boldizsár I, Ruszkai A, Balogh E, Klebovich I, Antal I. Pharmaceutical and formulation aspects of Petroselinum crispum extract. Acta Pharm Hung. 2012;82(1):3-14.

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Liu Q, Chen X, Yang G, Min X, Deng M. Apigenin inhibits cell migration through MAPK pathways in human bladder smooth muscle cells. Biocell. 2011 Dec;35(3):71-9.

Tavil B, Koksal E, Yalcin SS, Uckan D. Pretransplant nutritional habits and clinical outcome in children undergoing hematopoietic stem cell transplant. Exp Clin Transplant. 2012 Feb;10(1):55-61.

Nielsen SE, Young JF, Daneshvar B, Lauridsen ST, Knuthsen P, Sandström B, Dragsted LO. Effect of parsley (Petroselinum crispum) intake on urinary apigenin excretion, blood antioxidant enzymes and biomarkers for oxidative stress in human subjects. Br J Nutr. 1999 Jun;81(6):447-55.

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