More than many illnesses, Alzheimer’s and other forms of dementia upend the lives of the people struggling with them — and the lives of the loved ones around them. Daily lives, jobs, care of a home, personal health — all can end up suffering for both those with the disease and their caregivers, the loved ones who give up their time, money and homes to help. But there are a host of organizations that will, either for free or for a price, help lighten the load.