Answer:
Family members that have FH are the most at risk high cholesterol. If there cholesterol is at a super high, the consequences would be a heart attack or a stroke.
For its treatment there are not quite much options for the treatment. Statins is a drug class that is primarily focused on lowering cholesterol and is one option of treating FH. It is also good to lower 50% of LDL but it may have its cons.
You should put comma next to a word that will separate the meaning of the sentence, so your sentence will make sense after all.
