Email updates

Keep up to date with the latest news and content from BMC Public Health and BioMed Central.

Open Access Highly Accessed Research article

Effects of Greek orthodox christian church fasting on serum lipids and obesity

Katerina O Sarri*, Nikolaos E Tzanakis, Manolis K Linardakis, George D Mamalakis and Anthony G Kafatos

BMC Public Health 2003, 3:16  doi:10.1186/1471-2458-3-16

PubMed Commons is an experimental system of commenting on PubMed abstracts, introduced in October 2013. Comments are displayed on the abstract page, but during the initial closed pilot, only registered users can read or post comments. Any researcher who is listed as an author of an article indexed by PubMed is entitled to participate in the pilot. If you would like to participate and need an invitation, please email info@biomedcentral.com, giving the PubMed ID of an article on which you are an author. For more information, see the PubMed Commons FAQ.

Flaws in group selection

Andreas Zourdos   (2014-07-21 09:22)  University of Westminster email

As we can see in the sociodemographic characteristics of the groups of the study, the fasting group is also an almost non smoking group (with only 7% of the group smoking), while the non fasting group is clearly smoking a lot more, with 55% of the group being smokers. Sarri and colleagues are giving the fasting group an unfair advantage on the health markers that they want to study. Smoking can and will affect serum total cholesterol, serum triglycerides, LDL-C level and will lower HDL-C when compared to non smokers (Batic-Mujanovic et al, 2008).  In order to have a fair comparison of two diets, and/or to see if fasting per se does any good, we must create an "all things being equal / ceteris paribus" experiment. The group design is so unequally created that it's impossible to rule out whether it was fasting that affected the blood markers, or the lack of smoking.

Competing interests

Author declares that he has no competing interests.

top

Post a comment