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Decline in low-density lipoprotein cholesterol concentration: lipid-lowering drugs, diet, or physical activity? Evidence from the Whitehall II study.: Predictors of declines in LDL-cholesterol

Abstract : OBJECTIVE: To examine the association of lipid-lowering drugs, change in diet and physical activity with a decline in low-density lipoprotein (LDL) cholesterol in middle age. DESIGN: A prospective cohort study. SETTING: The Whitehall II study. PARTICIPANTS: 4469 British civil servants (72% men) aged 39-62 years at baseline. MAIN OUTCOME MEASURE: Change in LDL-cholesterol concentrations between the baseline (1991-3) and follow-up (2003-4). RESULTS: Mean LDL-cholesterol decreased from 4.38 to 3.52 mmol/l over a mean follow-up of 11.3 years. In a mutually adjusted model, a decline in LDL-cholesterol was greater among those who were taking lipid-lowering treatment at baseline (-1.14 mmol/l, n=34), or started treatment during the follow-up (-1.77 mmol/l, n=481) compared with untreated individuals (n=3954; p<0.001); among those who improved their diet--especially the ratio of white to red meat consumption and the ratio of polyunsaturated to saturated fatty acids intake--(-0.07 mmol/l, n=717) compared with those with no change in diet (n=3071; p=0.03) and among those who increased physical activity (-0.10 mmol/l, n=601) compared with those with no change in physical activity (n=3312; p=0.005). Based on these estimates, successful implementation of lipid-lowering drug treatment for high-risk participants (n=858) and favourable changes in diet (n=3457) and physical activity (n=2190) among those with non-optimal lifestyles would reduce LDL-cholesterol by 0.90 to 1.07 mmol/l in the total cohort. CONCLUSIONS: Both lipid-lowering pharmacotherapy and favourable changes in lifestyle independently reduced LDL-cholesterol levels in a cohort of middle-aged men and women, supporting the use of multifaceted intervention strategies for prevention.
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Kim Bouillon, Archana Singh-Manoux, Markus Jokela, Martin Shipley, David Batty, et al.. Decline in low-density lipoprotein cholesterol concentration: lipid-lowering drugs, diet, or physical activity? Evidence from the Whitehall II study.: Predictors of declines in LDL-cholesterol. British heart journal, BMJ Publishing Group, 2011, 97 (11), pp.923-30. ⟨10.1136/hrt.2010.216309⟩. ⟨inserm-00588857⟩

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