Scientific studies

69% of Wild Nutrition's product range contains Food-Grown® ingredients backed by five published scientific absorption studies*.  This paper looks at each of these five studies.

 

1. Food-Grown® Zinc, study 1

Study title: Glycoprotein Matrix Zinc Exhibits Improved Absorption: A Randomized Crossover Trial
Authors: Ralf Jãger et al
Study reference: 30th March 2024. Nutrients 2024, 16, 1012
Study description: The purpose of this study was to compare the effects of glycoprotein matrix-bound zinc (GPM) on absorption compared to inorganic zinc oxide. Sixteen participants ingested 11 mg of zinc as either GPMTM Soy-Free Zinc (GPM, Ashland, Kearny, NJ, USA) or zinc oxide (USP). Blood samples were taken at 0 (i.e., baseline), 30, 60, 90, 120, 180, 240, 300, 360, 420, and 480 min post-ingestion.

 

2. Food-Grown® Selenium

Study title: The Relative Bioavailability of Sodium Selenite and High Selenium Yeast in Humans
Authors: Abdul-Wahab R. Hamad et al
Study reference: Pakistan Journal of Nutrition 8 (7): 1093-1096, 2009
Study description: This study was designed to test the relative bioavailability of sodium selenite and high selenium yeast using a short term experiment.Ten normal subjects -6 males and 4 females, aged 18-30 volunteered with informed consent. The normal subject’s levels of serum selenium ranged between 40.3-62.7 ng\ml before treatment. All patients were treated with 200 ug of selenium as selenite or yeast form for 10 weeks. Blood samples were taken at 0, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 h.

 

3. Food-Grown® Zinc, study 2

Study title: Glycoprotein Matrix Zinc Exhibits Improved Absorption: A Randomized Crossover Trial
Authors: Ralf Jãger et al
Study reference: 30th March 2024. Nutrients 2024, 16, 1012
Study description: A double-blind, randomized crossover study was conducted at the University of Mary Hardin-Baylor (UMHB), Belton, TX, USA, in accordance with the Declaration of Helsinki guidelines. Males (n = 8) and females (n = 8) between the ages of 18 and 55 years were recruited to participate in this study. In order to qualify for this study, participants needed to have normal body weight [body mass index (BMI) of 19–24.99 kg/m2 and be recreationally active (according to American College of Sports Medicine Guidelines). Participants were not allowed to consume any nutritional supplements known to affect measures of the current study for 6 weeks prior to the study. Sixteen participants ingested 11 mg of zinc as either GPM™ Soy-Free Zinc (GPM, Ashland, Kearny, NJ, USA) or zinc oxide (USP). Blood samples were taken at 0 (i.e., baseline), 30, 60, 90, 120, 180, 240, 300, 360, 420, and 480 min post-ingestion.

 

4. Food-Grown® Vitamin D

Study title: Effect of 3 Vitamin D formulations on increasing serum Vitamin D in otherwise healthy participants.
A 72-hour comparator study.
Authors: David Briskey et al.
Study reference: 17th June 2024. International Journal of Functional Nutrition
Study description: Design: A randomised, parallel clinical study to compare the plasma absorption of Wild Nutrition Food Grown Vitamin D compared to two other types of Vitamin D3 products: a standard vitamin D3 product (tablet) and a buccal spray product. Investigational product: Wild Nutrition Food Grown Vitamin D, Standard Vitamin D3, buccal spray Vitamin D3.

 

5. Food-Grown® Vitamin C

Study title: Comparative bioavailability to humans of ascorbic acids alone or in Citrus extract
Authors: A. Vinson et al
Study reference: American Journal of Clinical Nutrition 1988; Sep:48 (3):601-4
Study description: This study was performed to determine whether synthetic ascorbic acid (AA) alone or in a natural citrus extract containing bioflavonoids, proteins, and carbohydrates was more bioavailable to human subjects. The effect of a single 500-mg ascorbate dose of the two forms and a placebo citrus extract on plasma ascorbate was examined in eight fasting subjects.

*Data from five published scientific absorption studies on Food-Grown® ingredients: Vitamin C, Zinc, Selenium and Vitamin D.