== Reliable sources == 

 You idea of conducting a scientific experiment for the sake of a Wikipedia article is laudable in intself. However, this is not a good way to go. 

 As an encyclopedia, Wikipedia should only contain information that is verifiable. Regulation of body mass of mammals (such as humans) is the subject of scientific research, in this instance, physiology. Therefore, you will have to understand how scientific knowledge is achieved. 

 The individual researcher cannot investigate a complex phenomenon such as body mass regulation without taking into account the experimental results and the ideas of other researchers. If you type "body mass" into the search engine of Pubmed, you will get about 65,000 entries. This means, there have been 65,000 studies in this area, but, alas, the topic is still controversial. If you publish your proposed study, there will be 65,001 studies. This will not change anything in the whole picture, unless your contribution is really revolutionary (and you will be eligible for the Nobel prize). Moreover, no other scientist will take your contribution for serious if you publish it in the Washington Post or syndicate it. If your findings revolutionize the field, your fellow researchers will be very suspicious if you did not publish them in a reputable scientific journal. 

 You might say that there are plenty of scientific theories that were rejected by the scientific community for a long time before they became finally accepted. See continental drift (discovered by Alfred Wegener) or transposons (discovered by Barbara McClintock). These theories took decades to be generally accepted, nevertheless, they were first published in peer-reviewed scholarly journals, and not in the Washington Post.  

 So, instead of trying to abuse a daily paper, try to go through the 65,000 studies summarized in PubMed, and find those who corroborate your ideas. 

 With kind regards,