Olive Leaf for Diabetes

olive leaf type 1 diabetes

Type 1 diabetes can be treated by olive leaf according to studies.

Olive leaf has been found to help turn around type 1 diabetes according to multiple studies.

Yes, we are referring to type 1 diabetes, related to damage to the pancreas’ beta cells. This sort of diabetes is known by conventional medicine to be uncurable. Can nature provide a solution? Yes, according to researchers.

Insulin sensitivity and olive leaf

Researchers from the University of Auckland have determined that olive leaf extract has the ability to increase insulin sensitivity and increase the production of insulin by the pancreas.

In this randomized, double-blinded and placebo-controlled clinical study, the researchers divided 46 overweight men into two groups. They gave one group the leaf extract (standardized to oleuropein and hydroxytyrosol) and the other group a placebo for twelve weeks. The placebo and leaf extracts were both given in capsules and their identity completed masked.

Then after a six-week washout period, the researchers switched the groups, giving the placebo group the extract and the olive extract group the placebo.

The researchers found that the olive leaf extract lowered insulin resistance by an average of 15% and increased the productivity of the pancreas’ beta cells – which produce insulin – by 28%.

Insulin sensitivity was measured using a glucose tolerance test, which measures glucose and insulin levels in the blood every thirty minutes. pancreatic beta cell function was measured using the Matsuda method of glucose/insulin curve measurements.

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The researchers concluded:

“Supplementation with olive leaf polyphenols for 12 weeks significantly improved insulin sensitivity and pancreatic β-cell secretory capacity in overweight middle-aged men at risk of developing the metabolic syndrome.”

Olive leaf and type 1 diabetes

While the research shows the ability of olive leaf to treat type 2 diabetes, this effect of olive leaf extract upon the pancreas’ beta cells means that olive leaf may well be able to treat or partly ameliorate type 1 diabetes. Type 1 diabetes is, after all, related to insufficiency and relative destruction among the beta cells. This in turn depletes their ability to produce enough insulin.

In their analysis of this study together with other research on the leaf surmised that the effects upon a person with type 2 diabetes would likely be more pronounced. This concept is confirmed by a number of studies of conventional medications that showed effects upon diabetics are greater than on non-diabetic individuals.

The researchers, in their comparison to conventional drugs for insulin sensitivity, noted that the olive leaf extract’s effects of increasing beta cell production at the same time increasing insulin sensitivity (by 15%) is unique. This is because conventional medications typically produce the effect of increasing beta cell activity but not increasing insulin sensitivity.

They stated:

“Hence, compared to these drugs that only improve insulin secretion, olive leaf extract improves both insulin sensitivity and pancreatic β-cell secretory capacity. Remarkably, the observed effects of olive leaf extract supplementation in our study population is comparable to common diabetic therapeutics (particularly metformin)…”

Type 2 diabetes aided in other studies

The ability of the leaf extract to treat type 2 diabetes was confirmed in another study from Israeli medical researchers. In this study, 79 type 2-diabetic patients were given 500 milligrams daily the leaf extract or a placebo for 14 weeks. The olive leaf treatment group had significantly lower levels of HbA1c (glycosylated hemoglobin) and lower fasting plasma insulin levels.

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Olives have been a central part of the famous Mediterranean Diet for thousands of years, and olive leaf has been used medicinally for those with blood sugar issues at least for centuries. There is no surprise that the Mediterranean Diet is known for its ability to prevent and even reverse metabolic disease.

Stevia also helps diabetes according to other research. So do brown seaweeds.




de Bock M, Derraik JG, Brennan CM, Biggs JB, Morgan PE, Hodgkinson SC, Hofman PL, Cutfield WS. Olive leaf polyphenols improve insulin sensitivity in middle-aged overweight men: a randomized, placebo-controlled, crossover trial. PLoS One. 2013;8(3):e57622.

Wainstein J, Ganz T, Boaz M, Bar Dayan Y, Dolev E, Kerem Z, Madar Z. Olive leaf extract as a hypoglycemic agent in both human diabetic subjects and in rats. J Med Food. 2012 Jul;15(7):605-10. doi: 10.1089/jmf.2011.0243.


  • Case Adams, Naturopath

    California Naturopath, Ph.D. in Natural Health Sciences, Doctorate in Integrative Health Sciences, Board Certified Alternative Medicine Practitioner. Diplomas in Blood Chemistry, Clinical Nutritional Counseling, Homeopathy, Aromatherapy, Colon Hydrotherapy, certificates in Pain Management and Case Management/Contact Tracing. Has authored more than 30 books and hundreds of periodical articles on natural medicine. Recreational activities include surfing, sailing, running, biking, swimming, SUPing, hiking. Contact: case(at)caseadams(dot)com.

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