Does every single human have some degree of thinner hairs (miniaturized)? If so, do these hairs shed?

Every person is different, but variances can be normal. I suggest seeing a hair loss expert now to evaluate and go over your condition and provide you information about your best treatment options and supplements. There are great non-invasive options like prp/progesterone which work well with Minoxidil/Steroids. Hair transplantation is an alternative. See an expert. Best, Dr. Emer

Yes it is normal to have some degree of miniaturization, and it is typical to shed 80-100 hairs a day.

Yes every person has some degree of miniaturized, thin hair on the scalp .İt is normal . But shedding of them is adifferent concept. If you affected with  AGA  you may lose them persistent , but 100 hair (some of them thin ) loss daily is normal and its just related hair life cycle..

In general, seeing some of those hairs isn't unusual. 7 out of 100 isn't a cause for concern- if you are worried though I'd recommend watching your hair closely. When/if this number begins increasing, that is when you should seek a professional examination by a specialist.

Shedding of 80-100 hairs may be normal, but for many individuals does suggest abnormal shedding. A telogen effluvium needs to be ruled out. Other conditions can also cause shedding, including androgenetic alopecia. But yes, shedding of a proportion of small hairs is normal - usually less than 10%-15%

When you look at the scalp microscopically, there are a few miniaturized hairs seen in many follicular units. I have published this and reported that less than 20% is normally present in the non-balding patient, see below