Meaning of ‘other people with Alzheimer’s’ and ‘experience something similar’

Meaning of ‘other people with Alzheimer’s’ and ‘experience something similar’

The passage below is from Jellyfish age backwards by Nicklas Brendborg.

Are we perhaps wrong about the involvement of amyloid beta clumps in Alzheimer’s? That’s very unlikely. You see, we know that people with Down’s syndrome have a much higher risk of getting Alzheimer’s disease. They also tend to get it very early. Down’s syndrome is caused by having an extra copy of chromosome 21, and on that chromosome sits the amyloid beta gene. This suggests that an increased amount of amyloid beta coincides with Alzheimer’s. Scientists believe other people with Alzheimer’s experience something similar. Either they produce more amyloid beta than normal, or perhaps they are worse at clearing it up. In both cases, amyloid beta is seen as a sort of waste product. ##148 We don’t really know what its intended function is – we only know it from Alzheimer’s disease. So essentially, the story goes: we have a protein with no purpose, and in old age, it makes clumps in the brain and kills us.

In this passage I want to ask the contextual meaning of ‘other people with Alzheimer’s’ and ‘experience something similar’.

Does ‘other people with Alzheimer’s’ mean ‘people with Alzheimer’s but without own’s syndrome’? (Am I right?)

Does ‘experience something similar’ mean ‘also have increased amount of amyloid beta’? (Am I right?)

Thanks in advance.