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The Health Benefits of Guavas E-mail
guavas
The guava is believed to have originated in the area that is now Central America and Mexico. Spanish and Portuguese explorers introduced the guava to the East Indies and it soon became a popular crop in India and Asia.

In Taino (pre-Columbian inhabitants of the Bahamas) mythology, the spirits of the dead were believed to hide away during the day and come out at night to eat guavas.

Today the guava is a common fruit throughout tropical America, Asia and in the warmer parts of Africa, and is one of Mexico’s biggest fruit crops.

Health Benefits of Guavas & Guava Leaves

  • Nutrients
    Guavas are an excellent source of Vitamin C. They are a very good source of Vitamin A.
  • Antioxidants
    The pulp and the peel of the guava are a remarkable source of natural antioxidants and AODF (antioxidant dietary fiber), a combination of the properties of antioxidants and dietary fiber from a single source. The antioxidant properties of the skin are ten times higher than that of the pulp. Lycopene is a potent antioxidant known for its protective action against prostate cancer, and is found in guavas, tomatoes, pink grapefruit and watermelon. An in vitro study of the “Horana Red” variety of guava showed the lycopene content to be greater than that of the “Sugar Baby” variety of watermelon. In addition to lycopene, guavas are also an excellent source of beta-carotene and vitamin C, with 228mg/100g of vitamin C as opposed to 53mg/100g in oranges. Guava leaf extracts have also been shown to contain high levels of antioxidants, and has been found to enhance male fertility in a study in rats.
  • Anti Inflammatory
    Preliminary studies on the anti inflammatory properties of guava leaf extract have indicated that the extract is involved with the inhibition of iNOS and COX-2 (inflammatory agents). It is speculated that the numerous chemical compounds present in the plant are responsible for the anti inflammatory effects of the leaf extract.
  • Acne
    Thirty-eight men and women with various types of acne participated in a study that concluded that guava leaf extract to be beneficial in treating acne.
  • Diarrhea
    Essential oil guava leaf extracts have been tested and shown to inhibit the diarrhea causing bacteria Staphylococcus aureus, Salmonella spp. and Escherichia coli, and that the use of guava leaf extracts can be a feasible treatment in diarrhea cases where access to commercial antibiotics is restricted.
  • Teeth
    Guaijaverin, a flavanoid compound present in guavas inhibits the growth of Streptococcus mutans, which is considered to be a pathogen for dental caries.
  • Diabetes
    Preliminary studies suggest that guava leaf extract possesses anti diabetic properties.
Nutrient Values of Guavas per 100g
Calories
68kcal
 
Energy Value
285kj
Total Fat
0.95g
Carbohydrates
14.32g
Sugars
8.92g
Dietary Fiber
5.4g
Protein
2.55g
Sodium
2mg
Zinc
0.23mg
Potassium
417mg
Iron
0.26mg
Magnesium
22mg
Copper
0.230mg
Calcium
18mg
Vitamin C
228.3mg
Vitamin E
0.73mg
Vit. B3 (Niacin)
1.084mg
Vitamin B6
0.110mg
Vit. B1 (Thiamin)
0.110mg
Vit. B2 (Riboflavin)
0.040mg
References:
1. Fruits of Warm Climates by Julia F. Morton.
2. Benders' Dictionary of Nutrition and Food Technology.
3. USDA National Nutrient Database for Standard Reference.
4. Jiménez-Escrig A, Rincón M, Pulido R, Saura-Calixto F. Guava fruit (Psidium guajava L.) as a new source of antioxidant dietary fiber. J Agric Food Chem. 2001 Nov;49(11):5489-93. PMID: 11714349.
5. Marquina V, Araujo L, Ruíz J, Rodríguez-Malaver A, Vit P. [Composition and antioxidant capacity of the guava (Psidium guajava L.) fruit, pulp and jam] Arch Latinoam Nutr. 2008 Mar;58(1):98-102. PMID: 18589579.
6. Chandrika UG, Fernando KS, Ranaweera KK. Carotenoid content and in vitro bioaccessibility of lycopene from guava (Psidium guajava) and watermelon (Citrullus lanatus) by high-performance liquid chromatography diode array detection. Int J Food Sci Nutr. 2008 Jun 18:1-9. PMID: 18608542.
7. Qian H, Nihorimbere V. Antioxidant power of phytochemicals from Psidium guajava leaf. J Zhejiang Univ Sci. 2004 Jun;5(6):676-83. PMID: 15101101.
8. Akinola OB, Oladosu OS, Dosumu OO. Spermatoprotective activity of the leaf extract of Psidium guajava Linn. Niger Postgrad Med J. 2007 Dec;14(4):273-6. PMID: 18163132.
9. Choi SY, Hwang JH, Park SY, Jin YJ, Ko HC, Moon SW, Kim SJ. Fermented guava leaf extract inhibits LPS-induced COX-2 and iNOS expression in Mouse macrophage cells by inhibition of transcription factor NF-kappaB. Phytother Res. 2008 Jul 10;22(8):1030-1034. PMID: 18618521.
10. Ojewole JA. Antiinflammatory and analgesic effects of Psidium guajava Linn. (Myrtaceae) leaf aqueous extract in rats and mice. Methods Find Exp Clin Pharmacol. 2006 Sep;28(7):441-6. PMID: 17003849.
11. Gonçalves FA, Andrade Neto M, Bezerra JN, Macrae A, Sousa OV, Fonteles-Filho AA, Vieira RH. Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller). Rev Inst Med Trop Sao Paulo. 2008 Jan-Feb;50(1):11-5. PMID: 18327481.
12. Qadan F, Thewaini AJ, Ali DA, Afifi R, Elkhawad A, Matalka KZ. The antimicrobial activities of Psidium guajava and Juglans regia leaf extracts to acne-developing organisms. Am J Chin Med. 2005;33(2):197-204. PMID: 15974479.
13. Vieira RH, Rodrigues DP, Gonçalves FA, Menezes FG, Aragão JS, Sousa OV. Microbicidal effect of medicinal plant extracts (Psidium guajava Linn. and Carica papaya Linn.) upon bacteria isolated from fish muscle and known to induce diarrhea in children. Rev Inst Med Trop Sao Paulo. 2001 May-Jun;43(3):145-8. PMID: 11452322.
14. Gonçalves FA, Andrade Neto M, Bezerra JN, Macrae A, Sousa OV, Fonteles-Filho AA, Vieira RH. Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller). Rev Inst Med Trop Sao Paulo. 2008 Jan-Feb;50(1):11-5. PMID: 18327481.
15. Prabu GR, Gnanamani A, Sadulla S. Guaijaverin -- a plant flavonoid as potential antiplaque agent against Streptococcus mutans. J Appl Microbiol. 2006 Aug;101(2):487-95. PMID: 16882158.
16. Oh WK, Lee CH, Lee MS, Bae EY, Sohn CB, Oh H, Kim BY, Ahn JS. Antidiabetic effects of extracts from Psidium guajava. J Ethnopharmacol. 2005 Jan 15;96(3):411-5. PMID: 15619559.