Hospitalizations for non-disabling conditions among older adults such as pneumonia or exacerbations of chronic conditions frequently result in new disability, failure to recover from the prehospitalization functional loss, or even continued functional decline. Because hospital-related functional decline is associated with a wide range of negative outcomes, including institutionalization and death, risk factors for in-hospital functional decline have been extensively studied. Research has traditionally focused on personal risk factors, such as preexisting functional and cognitive status, comorbidities, age, and severity of illness. Recently studies focus more on an attempt to discern the role of risk factors for in hospital outcomes that are amenable to change, evaluating the role of hospitalization-related processes and patient experiences.This talk will provide the overview of the research in the field and specifically describe findings of the large-scale prospective multi- - FOR) study relating to functional trajectories, post-discharge falls, and re-hospitalization outcomes while focusing on understanding the role of in-hospital environment, patients' mobility, continence care, nutrition support, family involvement and additional care-related processes. These are potentially modifiable hospitalization risk factors at which practice and policy should be targeted in efforts to curb post-hospitalization negative outcomes.