Alzheimer's disease

Scientists now have a fairly noninvasive way to test for Creutzfeldt-Jakob disease, a rare form of dementia. A similar test, they say, might offer earlier diagnoses of Parkinson's and Alzheimer's.

Hugging a doll can soothe an upset toddler, and some say it can do the same for people with dementia. But critics say this form of therapy infantilizes adults.

Most potential Alzheimer's drugs are tested on mice. But rats may be a better choice because they seem to have a type of memory that's more like ours, and also are highly vulnerable to Alzheimer's.

People who have positive images of aging and have a purpose in life live years longer than those who are negative, studies find. They also have less risk of stroke and Alzheimer's disease.

A survey of more than 3,500 people caring for family members with dementia finds that many are spending down personal savings and cutting into their own basic needs to meet their loved one's expenses.