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YTE® Lowering The Stress Response Study

In a double-blind, placebo-controlled study performed by Daacro GmbH & Co KG, Trier-CRO specialised in the testing of stress, the primary end-points were to test the possible effect of YTE in acute stress (TSST). The study specifically looked at:

  • Subjective evaluation of acute stress (VAS)
  • Cortisol level
  • Heart rate

The study used healthy male volunteers, age 20-50 years old. All volunteers were non smokers.

The study showed that the participants taking YTE scored significantly lower in the subjective acute stress under TSST compared to the placebo group (graph below to the left).

In the group of chronically stressed TSST resulted in a higher increase in cortisol-release in the active group versus the placebo. While in the group without chronic stress TSST resulted in a lower increase in cortisol-release in the active versus the placebo group. This demonstrates that YTE normalises cortisol release. (Graph below to the right).


You can read this entire studies published paper on this link.

Effects of Powdered Fertilized Eggs on the stress response


YTE® Study Lowering Depression

Published in the Journal Of Medicinal Food a 12 week double-blind, placebo-controlled study investigated the effects of YTE® intake on outcome measures for depression. Fifty-five patients with depression were randomly assigned to receive YTE®, YTE® plus Melissa officinalis, or placebo for 12 weeks. At baseline, there were no significant differences in scores on the Hamilton Depression Rating Scale (HAM-D) or Beck Depression Inventory II (BDI-II) among the 3 groups. At 12 weeks, the HAM-D scores in groups treated with YTE or YTE with M. officinalis were both significantly lower than those in the placebo group. In addition, both treatment groups showed a significant improvement in depression as measured by the change in HAM-D scores from baseline to 12 weeks, whereas the placebo group showed no significant change. There were no significant differences between the 2 treatment groups. The study indicates that the fertilised egg powder has an anti depressive effect and may be an alternative or adjunct to anti depressive medication for some patients.

You can read this full study on this link

Effects on Depression


YTE® Study About Muscle Growth, Strength, and Performance.

Professor Törnblom conducted a six-week, double-blind placebo-controlled study at the University of Colorado and Arapahoe Community College involving thirty-two men and women ages nineteen to thirty-five. The study compared the effectiveness of two nutritional supplements in increasing muscle strength and muscle mass. The effects of taking 5 grams of a 50/50 blend of YTE and creatine were compared with taking only creatine monohydrate (5 grams). Results are shown below.


YTE - Creatine

Blended Monohydrate

Increases in Leg Press

21.2 Kg


Increases in Bench Press




In addition, a number of subjective conditions, for instance energy levels, stamina, and subjective health were also measured. Virtually all of the study participants who took YTE experienced a significant increase in physical energy, stamina, and muscle strength.


Please contact us to receive more details on these and additional clinical trials. 




1. Schult J1, Hero THellhammer J. "Effects of powdered fertilized eggs on the stress response.” - Clinical Nutrition - https://www.ncbi.nlm.nih.gov/pubmed/19837490

2. Ester Solberg"The Effects of Powdered Fertilized Eggs on Depression” Journal of Nutritional Food - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3133680 

3.Eskeland B. Thom E, Svendsen KO. "Desire in men: effects of oral ingestion of a product derived from fertilised eggs.” J Int Med Res 1997;25(2):62–70 - https://www.ncbi.nlm.nih.gov/pubmed/9100160