I also have a sister-in-law who lives with Alzheimer's (diagnosed at 49). When you watch someone you love deteriorate so rapidly to someone who no longer recognises you and whose personality completely changes, it is heart-breaking and painful. It made me realise that no-one whatever their age, ethnicity, gender, sexuality, how healthy or intelligent they are is immune from this illness.
Please donate to The Alzheimer's Society at www.justgiving.com/BeevanderDoes