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Alzheimer's Disease: Causes, Symptoms, Treatment

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Bella Rubins
Alzheimer's Disease: Causes, Symptoms, Treatment

Feixiong Cheng from the Cleveland Clinic, USA, started to create a new methodology for screening existing drugs for Alzheimer's disease. As a result of his work, he tested more than a thousand drugs, and sildenafil turned out to be a drug that reduces the likelihood of developing Alzheimer's disease according to researches.


Who does Alzheimer’s disease affect?


Dementia ranges in severity. In the mildest stage, you may notice a slight decline in your mental functioning and require some assistance on daily tasks. At the most severe stage, a person depends completely on others for help with simple daily tasks.


Dementia develops when infections or diseases impact the parts of your brain involved with learning, memory, decision-making or language. Alzheimer’s disease is the most common cause of dementia, accounting for at least two-thirds of dementia cases in people 65 and older.


What are the stages of Alzheimer’s disease?


Alzheimer’s disease organizations and healthcare providers use various terms to describe the stages of Alzheimer’s disease based on symptoms.


While the terms vary, the stages all follow the same pattern — AD symptoms progressively worsen over time.


No two people experience AD in the same way, though. Each person with Alzheimer’s disease will progress through the stages at different speeds. Not all changes will occur in each person. It can sometimes be difficult for providers to place a person with AD in a specific stage as stages may overlap.


What is preclinical Alzheimer’s disease?


Providers typically only reference the preclinical stage in research on Alzheimer’s disease. People with AD in the preclinical stage typically have no symptoms (are asymptomatic).

However, changes are taking place in their brain. This stage can last for years or even decades. People in this stage aren’t usually diagnosed with Alzheimer’s yet because they’re functioning at a high level.



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