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Can olive leaf extract reduce the risk of metabolic disease?

Can olive leaf extract improve insulin sensitivity in middle aged males? A randomized cross-over trial of olive leaf extract in males aged 35 -55, with a body mass index of 25 - 30.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12610001082099
Enrollment
50
Registered
2010-12-08
Start date
2011-04-01
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The purpose of the study is to formally assess the impact of olive leaf extract on insulin sensitivity. It will be given as a supplement, without altering other aspects of diet or lifestyle.

Interventions

Olive leaf extract (Oleuropein) 66mg (15mL), oral once daily for 12 weeks. Crossed over to placebo with a 6 week washout between interventions. There will be no lead in period.

Sponsors

University of Auckland / Liggins Institute
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used)

Eligibility

Sex/Gender
Male
Age
35 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Males aged 35 to 55. BMI 25 - 30

Exclusion criteria

Any medications BMI outside inclusion range Smokers Diabetes Cardiovascular disease.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026