While this fruit has had some promising results against many types of cancers, even those that Chemo could not kill, there is reason to be cautious. Studies have found that consumption could lead to a Parkinson’s like disease.
Here is more information from Sloan-Kettering:
Graviola, a tree prevalent in the rain forests of Africa, South America, and Southeast Asia, has been used in traditional medicine in many countries. Extracts of graviola show antiviral (1), antiparasitic, antirheumatic, astringent, emetic (2), antileishmanial and cytotoxic (3) (4), antinociceptive, anti-inflammatory (9), antihyperglycemic (10) and anticancer effects (5) (12) (13) in vitro and in vivo. However, human data are lacking. Alkaloids extracted from graviola may cause neuronal dysfunction and degeneration leading to symptoms of Parkinson’s disease (6) (11).
- Cancer treatment
- Parasitic infections
Mechanism of Action
Annonaceous acetogenins, phytochemicals isolated from the leaves, bark and twigs of graviola, are thought to be the active ingredients. The ethanolic extract of Annona muricata was found to inhibit the Herpes simplex virus (1) and effective against Leishmania braziliensis, L. panamensis promastigotes, and the cancer cell line U 937 (3) and hepatoma cell lines (8) in vitro. Gravioloa extracts were shown to be lethal to the fresh-water mollusk Biomphalaria glabrata, which acts as a host for the parasitic worm, Schistosoma mansoni (2).
Alkaloids from graviola are detrimental to the survival of dopaminergic nerve cells in vitro. This may result in neuronal dysfunction and degeneration. Graviola-induced cell death was inhibited by glucose supplementation suggesting that cell death may have been caused by energy depletion (6). Graviola has also been shown to stimulate serotonine receptors (7). Graviola extracts were effective against the growth of Adriamycin-resistant human mammary adenocarcinoma (MCF-7/Adr) by blocking access of cancer cells to ATP and by inhibiting the actions of plasma membrane glycoprotein (5). They also inhibited expression of HIF-1α, NF-κB, glucose transporters, and glycolytic enzymes resulting in decreased glucose uptake and ATP production in pancreatic cancer cells (12); and downregulated EGFR expression in another study (13).
Commercial Preparations: Following are dosages recommended by the manufacturers. However, the dosage may vary between products. A standard dose has not yet been established. Graviola supplement: For adults, one capsule daily. Each capsule contains 500mg of ground stem and leaves.
- Padma P, Pramod NP, Thyagarajan SP, Khosa RL. Effect of the extract of Annona muricata and Petunia nyctaginiflora on Herpes simplex virus. J Ethnopharmacol. 1998;61:81-3.
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- Liaw CC, Chang FR, Lin CY, Chou CJ, Chiu HF, Wu MJ et al. New cytotoxic monotetrahydrofuran annonaceous acetogenins from Annona muricata. J Nat Prod 2002;65:470-5.
- Oberlies NH, Chang CJ, McLaughlin JL. Structure-activity relationships of diverse Annonaceous acetogenins against multidrug resistant human mammary adenocarcinoma (MCF-7/Adr) cells. J Med Chem. 1997;40:2102-6.
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- de Sousa OV, Vieira GD, de Jesus R G de Pinho J, Yamamoto CH, Alves MS. Antinociceptive and Anti-Inflammatory Activities of the Ethanol Extract of Annona muricata L. Leaves in Animal Models. Int J Mol Sci. 2010 May 6;11(5):2067-78.
- Adeyemi DO, Komolafe OA, Adewole OS, Obuotor EM, Adenowo TK. Anti hyperglycemic activities of Annona muricata (Linn). Afr J Tradit Complement Altern Med. 2008 Oct 25;6(1):62-9.
- Lannuzel A, Höglinger GU, Champy P, et al. Is atypical parkinsonism in the Caribbean caused by the consumption of Annonacae? J Neural Transm Suppl. 2006;(70):153-7.
- Torres MP, Rachagani S, Purohit V, et al. Graviola: A novel promising natural-derived drug that inhibits tumorigenicity and metastasis of pancreatic cancer cells in vitro and in vivo through altering cell metabolism. Cancer Lett. 2012 Apr 1. [Epub ahead of print]
- Dai Y, Hogan S, Schmelz EM, Ju YH, Canning C, Zhou K. Selective growth inhibition of human breast cancer cells by graviola fruit extract in vitro and in vivo involving downregulation of EGFR expression. Nutr Cancer 2011;63(5):795-801.