More than 6 million Americans are living with Alzheimer's disease, according to the Alzheimer's Association, and the number is projected to rise to nearly 13 million by 2050. What's more, while Alzheimer's disease is the most prevalent type of dementia, there are others as well. As such, you may wonder if some of the forgetfulness your loved one has been experiencing is cause for concern. To help, here are the early warning signs of dementia...