Final answer:
A decrease in high density lipoprotein cholesterol levels is NOT a potential unintended outcome of supplementation with cholesterol-based androgenic compounds.
Step-by-step explanation:
The correct answer is a. A decrease in high density lipoprotein cholesterol levels.
Supplementation of cholesterol-based androgenic compounds like dehydroepiandrosterone or androstenedione can lead to various unintended outcomes. These potential outcomes may include an enhancement in muscle testosterone levels (c), an increase in blood levels of estrogen (d), but they do NOT typically cause a decrease in high-density lipoprotein cholesterol levels.
It's important to note that the use of anabolic steroids and androgenic compounds can have numerous harmful effects on the body, including cardiovascular problems, liver damage, hormonal imbalances, and psychological effects.