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

Thursday, 4 August 2011

Vegetarians have a higher risk of heart disease compared to omnivores

This post includes a synopsis of a study published in the Journal of the American College of Cardiology 2005; 46:1957-1958

Study title and authors:
Vascular Dysfunction in Chinese Vegetarians: An Apparent Paradox?
Timothy Kwok, MD, Ping Chook, MD, Lucia Tam, MPh, Mu Qiao, PhD, Jean L.F. Woo, MD, David S. Celermajer, PhD and Kam S. Woo, MD, FACC*
* Department of Medicine and Therapeutics, Prince of Wales Hospital, Shatin, Hong Kong SAR (Email:

This study can be accessed at:

The study investigated the following heart disease risk factors in 49 vegetarians and 49 omnivores:
(i) Carotid intima-media thickness (a measurment of the combined thicknesses of the intimal and medial layers of the carotid artery walls - so the greater the carotid intima-media thickness, the greater the risk of heart disease).
(ii) Flow-mediated dilation of brachial artery (a measurement of blood flow in the brachial artery - the less the flow the greater the risk of heart disease).
(iii) Vitamin B12 levels.
(iv) Homocysteine levels.
(v) Blood pressure.

The study found:
(a) Vegetarians had significantly greater carotid intima-media thickness than omnivores.
(b) Vegetarians had less flow-mediated dilation of the brachial artery than omnivores.
(c) Vegetarians had lower vitamin B12 levels than omnivores.
(d) Vegetarians had higher homocysteine levels than omnivores.
(e) Vegetarians had higher blood pressure than omnivores.
(f) Vegetarians ate less protein, less saturated fat and less cholesterol than omnivores.

To conclude: Vegetarians have a higher risk of heart disease compared to omnivores.