The Effect of Oral Intake of Animal and Plant Proteins on the Metabolism in Healthy Women

The goal of this interventional study is to learn about the effects of different proteins (from animals or plants) on the metabolism in healthy, normal weight women between 18-45 year who are not on hormonal birth-control. The main questions the study aims to answer are: 1. How do different proteins affect biological markers of the metabolism and which protein has the strongest effect? 2. How are the different proteins digested and taken up from our body? Participants will drink four different shakes on four different study days in a random order. Three of them contain each a different protein and one does not contain protein. Right before drinking the shake and on 11 timepoints after drinking the shake blood samples will be drawn.

Inclusion Criteria: * Females * Age: 18-45 years * Body mass index: 18.5 \< 25 kg/m2 * Signed informed consent Exclusion Criteria: * Use of hormonal contraceptives * Pregnancy or breastfeeding * Diabetes mellitus or any other metabolic disease that might affect the results of this study * Gastric surgery that affects digestion and uptake of protein * Any clinically significant present or past disease/condition and medication which in the investigator's opinion could interfere with the results of the trial