They say that one person`s treasures is another person`s junk (or vice Versa). However, excessive collecting and hoarding that leads to clutter can increase the chances of falls and injury. This American article containing very general information. It is found on the website for Mavencare home care services for seniors (not in NL).
Link: https://blog.mavencare.com/home-care-resources/how-to-reduce-hoarding-and-clutter-to-prevent-falls