- Heart-health supplements ineffective at reducing bad cholesterol. Six widely used dietary supplements promoted for improving heart health – including brands of fish oil, cinnamon, garlic and turmeric – were not effective at lowering “bad” cholesterol more than placebo after 28 days of use. https://newatlas.com/health-wellbeing/heart-health-supplements-ineffective-reducing-bad-cholesterol/ 19 comments science