Titanium dioxide is a common tattoo ink and a fair amount of research has gone into studying where that ends up if it does not stay in the skin.
The tattoo removal process allegedly does not work with white ink (titanium dioxide) as it does not get zapped by a laser to break down in the way other compounds do.
Generally the body moves these foreign things only if they get to the nanoparticle size out to the liver, so a lot of this article sounds rather similar to what goes on with the tattoo process.
Titanium dioxide is rather harmless compared to other tattoo ink colours, it has nothing compared to the cobalts, cadmiums and other 'salts' that make up other colours, and, despite advances in organic chemistry, you still need these heavy metals to make bright colours. We have moved on from lead but not much.
Getting back to the main article, there is good and bad in nano-particles. For instance, regular salt is now at the nano-particle size in 'beige' foods. This is how 'low salt' was achieved, the receptors on the tongue just need to get satisfied. So, imagine your 'freedom fries' with exceedingly fine salt on them, your tongue does not realise these are small particles rather than table-salt style crystals. If you are going to have salt for taste then you might as well have a small amount of the small particles - that are water soluble - rather than the bigger crystals - that are also water soluble. Your sodium intake is lower but there is no taste hardship involved.
For this reason I would take a lot of the article with a pinch of salt and move away from living beside a main road, nowadays cars emit far more nano-particles than they used to and your lungs can't stop them getting into the bloodstream. Visible smoke can at least be coughed up rather than just absorbed by your lymph nodes.
The tattoo removal process allegedly does not work with white ink (titanium dioxide) as it does not get zapped by a laser to break down in the way other compounds do.
Generally the body moves these foreign things only if they get to the nanoparticle size out to the liver, so a lot of this article sounds rather similar to what goes on with the tattoo process.
A hastily Googled article:
https://www.nhs.uk/news/lifestyle-and-exercise/tattoo-ink-pa...
Titanium dioxide is rather harmless compared to other tattoo ink colours, it has nothing compared to the cobalts, cadmiums and other 'salts' that make up other colours, and, despite advances in organic chemistry, you still need these heavy metals to make bright colours. We have moved on from lead but not much.
Getting back to the main article, there is good and bad in nano-particles. For instance, regular salt is now at the nano-particle size in 'beige' foods. This is how 'low salt' was achieved, the receptors on the tongue just need to get satisfied. So, imagine your 'freedom fries' with exceedingly fine salt on them, your tongue does not realise these are small particles rather than table-salt style crystals. If you are going to have salt for taste then you might as well have a small amount of the small particles - that are water soluble - rather than the bigger crystals - that are also water soluble. Your sodium intake is lower but there is no taste hardship involved.
For this reason I would take a lot of the article with a pinch of salt and move away from living beside a main road, nowadays cars emit far more nano-particles than they used to and your lungs can't stop them getting into the bloodstream. Visible smoke can at least be coughed up rather than just absorbed by your lymph nodes.