That's why I said measurable. The type of sand at the beach generally has a composition that doesn't pose a risk because there isn't enough of the fine particles to be inhaled. There's no measurable amount as it's too low. If it were measurable, that would be a problem as silicosis damage is cumulative (mall doses over a lifetime).
It is perfectly measurable. When you are approaching this with the precision that folks looking for micro-plastics do to get published.
I believe there are orders of magnitude between something like that being measurable and causing any symptoms that would make it worth considering from medical point of view.
"Any glass participles smaller than 20 µm were marked by the examiner as ‘sandy particles’ and not precisely measured."
People don't research that subject a lot because it's known that small 'sandy particles' in the body are not causing problems. But that doesn't mean they are immeasurable.
Again, source? I don't believe silica based dust is common to breath in at any measurable amount on a beach. If it's really common, then you'd have sources. The prior source was dealing with glass contamination of ampules. You can follow these comments back for context.
Repeatedly stating that something is common, does not make it so.
This source mentiones if something is smaller than some arbitraty limit there's no sense counting it because it's probably just sand not something that came from the glass ampule. Therefore small sand is common enough that it would skew their result to be something nonsensical.
You need to read between the lines because apparently nobody researched how much sand average person has in their bodies because it's not interesting.
Why don't you show me research supporing your claim that body doesn't contain sand particles in amounts at least comparable to amounts of microplastics detected?
"Why don't you show me research supporing your claim that body doesn't contain sand particles in amounts at least comparable to amounts of microplastics detected?"
Because that's not what is being discussed. What is being discussed is breathing in sand, that beach sand can cause silicosis, etc.
None. But they might have some because it's a new thing, therefore it's interestiing and fashionable to research that.
Nobody expects any symptoms from the substance humans are in contact with since our species came to be.
It's not a problem to find random garbage in our bodies. It is there because we came to be from dirt, metaphorically speaking. It's just that not all garbage is worth a grant.
The dose makes the poison.