Onions have also been shown to decrease cholesterol levels.
A study in 54 women with polycystic ovarian syndrome (PCOS) found that consuming large amounts of raw red onions (40–50 grams/day if overweight and 50–60 grams/day if obese) for eight weeks reduced total and “bad” LDL cholesterol compared to a control group.
What is LDL cholesterol?
Cholesterol comes in two types: LDL and HDL. The former is often branded “bad” because high levels of it raises your risk of heart disease.
In contrast, HDL cholesterol absorbs cholesterol and carries it back to the liver, where it is flushed out of the body. High levels of HDL cholesterol can lower your risk for heart disease and stroke.
Additionally, evidence from animal studies supports that onion consumption may reduce risk factors for heart disease, including inflammation, high triglyceride levels and blood clot formation.