The Pine Bark Study

The School of Health Sciences, Massey University is conducting a new study looking at the effects of New Zealand pine bark extract on blood sugars in healthy people living or near Auckland, New Zealand.

If you participate in the study you will be asked to drink a sugary drink along with a capsule containing pine bark extract, in various concentrations. You will need to visit Massey University Nutrition Research Facility at Albany campus, Auckland six times during a 4-8 week period, including one screening visit. At the study, blood samples will be taken to measure your blood sugar level. Each study visit will take approximately 2.5 h.

You will be reimbursed $170 (all six visits) for your time and commitment. You are also entitled to a free analysis of your body composition, blood lipid profile, and blood glucose. You will also be given a bag of healthy goodies at the end of each study visit.


  • 18-40 years of age
  • BMI 18-25 kg/m2
  • HbA1c <40 mmol/mol
  • Fasting glucose <5.5mmol/L
  • Generally healthy and not suffering from chronic diseases or diabetes
  • Not taking any medications that include blood glucose/ sugar lowering prescriptions
  • Not pregnant
  • Not allergic to pine bark extract
  • Non-smoker
  • Able to communicate well in English

Full information sheet

Recruitment for this study has now been completed. Thank you to all those that took, or are currently taking part. A summary of the results will be posted here once completed.

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