It may not smell like a lily, but Garlic (Allium sativum) is an edible bulb from the lily family. Fondly known to herbalists as “the stinking rose,” for centuries, there have been many traditional medicine uses for Garlic, including treatment of skin conditions, immune support, antimicrobial and, to reduce the risk of cancer and heart disease. In fact, Garlic is one of the most widely studied herbal supplements for its beneficial effects on the heart.

Garlic contains several vitamins and minerals that support heart health, including vitamin B6, vitamin C, manganese, and selenium. But it’s the chemicals that give garlic its pungent odor that scientists believe are the source of the herb’s heart health-promoting effects. Garlic is rich in the allicin, alliin, and ajoene—antioxidant compounds that help reduce the risk for cardiovascular disease.

Studies on garlic and the cardiovascular system typically use garlic powder, oil, or aged extracts. To date, the effects of garlic on the heart that are supported by science include:
Slows the development of atherosclerosis (hardening of the arteries)
Reduces blood pressure
Reduces triglycerides and therefore lowers total cholesterol

The amount of active compounds supplied by garlic supplements can vary because allicin is very sensitive to things such as air and heat. For example, aging garlic to reduce its odor also reduces the allicin present and compromises the effectiveness of the product.

Generally safe for most adults, taking a garlic supplement can cause heartburn, upset stomach, an allergic reaction, and breath and body odor (common with raw garlic). Garlic should not be taken by persons who are preparing for surgery or who have bleeding disorders because it can impair the body’s ability to form blood clots.

 

 

 

 

Resources
World’s Healthiest Foods: Garlic. http://www.whfoods.com/genpage.php?tname=foodspice&dbid=60
National Center for Complementary and Integrative Health. Garlic. https://nccih.nih.gov/health/garlic/ataglance.htm
Medline Plus. Herbs and Supplements: Garlic. (Includes information on garlic interactions with other drugs) https://www.nlm.nih.gov/medlineplus/druginfo/natural/300.html
Karagodin VP, Sobenin IA, Orekhov AN. Antiatherosclerotic and Cardioprotective Effects of Time-Released Garlic Powder Pills. Curr Pharm Des. 2015 Nov 12. Available from: http://www.eurekaselect.com/136921/article
Seki, T. and Hosono, T. Prevention of Cardiovascular Diseases by Garlic-Derived Sulfur Compounds. Jnl of Nutritional Science & Vitaminology (Tokyo). 2015. 61 Suppl:S83-85. doi: 10.3177/jnsv.61.S83. Date Accessed: Dec 8, 2015. https://www.jstage.jst.go.jp/article/jnsv/61/Supplement/61_S83/_pdf
Xiong, XJ., Wang, PQ, et al., Garlic for hypertension: A systematic review and meta-analysis of randomized controlled trials. Phytomedicine. 2015 Mar 15;22(3):352-61. doi: 10.1016/j.phymed.2014.12.013. http://www.ncbi.nlm.nih.gov/pubmed/25837272

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