A study to investigate appetite in older adults residing in nursing homes.

1. 65 years of age or older
2. Residing in a nursing home
3. Able to consume high energy and/or high protein ONS at discretion of the Investigator
4. Written informed consent

1. Any known gastrointestinal (GI) disease that interferes with the gastrointestinal motility and nutritional intake, e.g. constipation or diarrhoea secondary to neuropathy, diarrhoea due to chronic inflammatory bowel disease, gastroparesis
2. Any known metabolic condition that interferes with the breakdown of amino acids
3. History of GI surgery (except appendectomy) that interferes with the GI function, e.g. ileostomy, colostomy, (partial) gastrectomy or any other procedure for stomach volume reduction, including gastric banding
4. Investigator’s uncertainty about the willingness or ability of the subject to comply with the protocol requirements, for example due to the presence of a psychiatric disorder (e.g. major depression, psychoses), dementia or Alzheimer’s disease
5. Known allergy to cow’s milk protein
6. Known galactosaemia
7. Known severe lactose intolerance without using lactase
8. Enrolment in any other studies involving investigational or marketed products concomitantly or within two weeks prior to baseline