I've seen study that claims shrimp good for the cholesterol level, however I don't know if the study was "sponsored".
As I can remember, the study proves people eating 10 oz shrimp every day for a week(or a month?) have a higher LDL value, meanwhile the HDL value goes up, the triglyceride value goes down.
LDL is the bad cholesterol, however HDL is the good cholesterol. Triglyceride breaks down into VLDL.
Anyway, the study says eating shrimps raise your level of good cholesterol and bad cholesterol together.