In 2009, the 'bad' cholesterol levels in white American adults were about 7% lower than they were in 2000, which could mean less risk for heart disease — but other factors might have contributed too.
Scientific Claim
Low-density lipoprotein cholesterol (LDL-C) levels were 7% lower in non-Hispanic white U.S. adults in 2009 compared to 2000, decreasing from 128.2 mg/dL to 119.2 mg/dL, suggesting a concurrent improvement in a key cardiovascular risk biomarker.
Original Statement
“Levels of LDL-C were lower in the samples from 2009 (119.2 mg/dL [3.09 mmol/L]) compared with the samples from 2000 (128.2 mg/dL [3.32 mmol/L]; Table 1).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The claim reports an observed difference in LDL-C levels between two time points using direct measurements. No causal language is used, and the data support this descriptive finding without overreach.
Evidence from Studies
Supporting (1)
Levels of plasma trans-fatty acids in non-Hispanic white adults in the United States in 2000 and 2009.
The study found that bad cholesterol (LDL-C) went down by 7% in white U.S. adults between 2000 and 2009, which is exactly what the claim says — and it also links this drop to less unhealthy fats in food.