The raison d'etre of this website is to provide you with hard scientific information which may help you make informed decisions in your quest for health (so far I have blogged concise summaries of over 1,500 scientific studies and have had three books published).

My research is mainly focused on the effects of cholesterol, saturated fat and statin drugs on health. If you know anyone who is worried about their cholesterol levels and heart disease, or has been told to take statin drugs you could send them a link to this website, and to my statin or cholesterol or heart disease books.

David Evans

Independent Health Researcher

Tuesday, 8 May 2012

Low cholesterol levels are associated with poor memory

This study was published in Arteriosclerosis, Thrombosis, and Vascular Biology 2008 Aug;28(8):1556-62

Study title and authors:
Low HDL cholesterol is a risk factor for deficit and decline in memory in midlife: the Whitehall II study.
Singh-Manoux A, Gimeno D, Kivimaki M, Brunner E, Marmot MG.
INSERM U687-IFR69, Hôpital Paul Brousse, Bât 15/16, 16 Avenue Paul Vaillant Couturier, 94807 Villejuif Cedex, France.

This study can be accessed at:

The study investigated the association of cholesterol levels with memory. 3,673 male and female participants, average age 61, were subjected to a short-term verbal memory test.

The study found:
(a) Poor memory was found in 53% more subjects with the lowest levels of high density lipoprotein (HDL) cholesterol, below 40 mg/dL (1.0 mmol/L), compared to those with the highest levels of high density lipoprotein (HDL) cholesterol, above 60 mg/dL (1.5 mmol/L).
(b) Poor memory was found in 10% more subjects with the lowest levels of cholesterol, below 200 mg/dL (5.1 mmol/L), compared to those with the highest levels of cholesterol 240 mg/dL (6.2 mmol/L).

The results of the study indicate that low cholesterol levels are associated with poor memory.

Links to other studies:
High cholesterol levels boost memory function
High cholesterol levels are associated with higher intelligence