The Effect of Milk Protein vs Blends of Milk and Plant Protein on Growth Markers in 7-8 Year Old Healthy Danish Children

Inclusion Criteria: * Age 7-8 years * Healthy\* * The child is willing to consume protein powder twice a day for 4 weeks * The child is not a picky eater and so does not mind trying new foods and flavours * The child speaks Danish in order to understand the study procedures * The parents read and speak Danish in order to be properly informed about the study procedures * Written informed consent has been obtained * The principal investigator, who is blinded to study treatment, will perform a case-by-case medical evaluation of children with any signs of being unhealthy or having any illness or taking medication at the time of admission. If the conditions are considered to potentially affect protein metabolism or growth, the children will not be included. If a child is acutely ill at the scheduled time of study start, the child cannot be included. But the child may be included later when the acute illness has resolved Exclusion Criteria: * The child drinks more than 350 ml of milk per day * Known or suspected allergy, sensitization or intolerance to milk (protein or lactose), rapeseed or mustard * Any acute illness\* * Chronic illness or disease that may affect protein metabolism or growth\* * Chronic intake of medicine that may affect protein metabolism or growth\* * Concomitant participation in other studies involving dietary supplements or blood sampling * Living in a household with another participating child * The principal investigator, who is blinded to study treatment, will perform a case-by-case medical evaluation of children with any signs of being unhealthy or having any illness or taking medication at the time of admission. If the conditions are considered to potentially affect protein metabolism or growth, the children will not be included. If a child is acutely ill at the scheduled time of study start, the child cannot be included. But the child may be included later when the acute illness has resolved