Read the article and complete the sentences using the correct expression
As the disease advances, symptoms can include problems with language, disorientation, mood swings, loss of motivation, not managing self care, and behavioural issues. Gradually, bodily functions are lost, ultimately leading to death.
The cause of Alzheimer's disease is poorly understood. About 70% of the risk is believed to be genetic. The disease process is associated with plaques and tangles in the brain. In 2015, there were approximately 48 million people worldwide with Alzheimer's. In developed countries, Alzheimer's is one of the most financially costly diseases.