How many of them did you read? Here's one: https://s3.amazonaws.com/academia.edu.documents/51684338/j.etap.2009.06.00120170207-29239-1q7mwki.pdf?AWSAccessKeyId=AKIAIWOWYYGZ2Y53UL3A&Expires=1540229062&Signature=Alf%2FXWbjf5Rf%2Bt%2FtHWBBfOubDMg%3D&response-content-disposition=inline%3B%20filename%3DOxidative_stress_responses_of_rats_expos.pdf
It says glyphosate is generally not problematic except for raising cholesterol levels. The surficant in Roundup caused some problems as one might expect. Drinking detergent is generally going to cause problems. Glyphosate? Not so much.
The 28 are the tip of the iceberg.
But since you brought this up, Ill add that my cholesterol is already high enough.
If you want a higher level for yourself, I support your right to ingest as much round up as it takes to get to your preferred level.