India, Nov. 20 -- Marvel star Chris Hemsworth has opened up about a heartbreaking chapter in his life in the trailer for the documentary 'A Road Trip to Remember'. For the first time since talking about his own risk of Alzheimer's, Chris has revealed that his father has been diagnosed with this brain disorder, which messes up with memory. The National Geographic film documents a poignant journey that the actor takes with his father, Craig Hemsworth. It is not just an attempt to highlight the bond between a father and son, but also raise awareness about the challenges that come with Alzheimer's - both for the patient and for the caregivers. It also offers hope through ideas like reminiscence therapy.

Alzheimer's is a severe form of dement...