Melk vertering studie

Drinking cow milk (maximum of 200ml/week for those who declare to not drink habitually and a minimum of 700ml/week for those who declare to drink cow milk habitually)

Reporting/not reporting GI discomfort after cow milk consumption (depending on study group)

Female

BMI: 18.5 - 30 kg/m2

Age: 18 - 60 years

Healthy (self-reported)

Need to be willing to be informed about incidental findings of pathology

Having a history of medical or surgical events related to the GI tract that may give rise to GI complaints

Medical drug use that influences the GI tract’s normal function, e.g. the motility, pH etc: among others use of proton pump inhibitors, antacids, anti-depressants etc.

Medical drug use that influence the GI tract’s microbiota: antibiotic use within 1 months prior to the pre-study screenings day Mental status that is incompatible with the proper conduct of the study

Daily use of probiotics

Weekly use of laxatives

Lactose intolerance (medically diagnosed or tested with a lactose breath test in screening visit) and cow milk allergy

Reported unexplained weight loss or weight gain of > 5 kg in the month prior to screening

Reported slimming or medically prescribed diet

Reported vegan or macrobiotic life-style

Alcohol consumption of more than 14 glasses/week

Smoking more than 4 cigarettes a day

Not willing to give stool sample during the study

Being pregnant, having the intention to get pregnant, lactating or being under postmenopausal hormonal treatment

Not having a general practitioner

Having a contra-indication to MRI scanning