Alzheimer's disease (AD) is a neurodegenerative disorder that affects memory, thinking, and behavior. It is the most common cause of dementia, a general term for loss of cognitive function.

AD is characterized by the progressive death of neurons in the brain. This damage leads to a decline in cognitive functions, such as memory, thinking, and judgment.

AD can also lead to changes in behavior, such as apathy, agitation, and wandering.

AD is a serious public health problem. It is the sixth leading cause of death in the United States. The cost of caring for people with AD is estimated to be \$355 billion per year in the United States.

AD is also a major cause of disability. People with AD may need help with everyday activities, such as bathing, dressing, and eating. They may also need to live in a care facility.

The prevalence of AD increases with age. About 5% of people aged 65 and older have AD. The prevalence of AD doubles every five years after the age of 65.

In 2020, an estimated 50 million people worldwide had AD. By 2050, the number of people with AD is expected to reach 152 million.

The trend of AD is concerning. The increase in the number of people with AD is due to a number of factors, including: The aging population, Improved diagnostic methods, Changes in lifestyle, The Causes of Alzheimer's Disease,

The causes of AD are not fully understood. However, research suggests that a combination of genetic and environmental factors contribute to the development of AD. Genetic factors play a role in AD.

People with a family history of AD are more likely to develop the disease. Environmental factors** that may contribute to AD include: Head injury, High blood pressure, High cholesterol, Diabetes, Smoking

There is no cure for AD. However, there are treatments that can help to slow the progression of the disease and improve the quality of life for people with AD. Medications that can help with the symptoms of AD include: Cholinesterase inhibitors, NMDA receptor antagonists, Galantamine.

Other treatments that may help with the symptoms of AD include: Physical therapy, Occupational therapy, Speech therapy,

AD is a serious public health problem that is expected to become more common in the future. Early detection and intervention are important for improving the quality of life for people with AD and their families.