Category: Epidemiology

Do Helmets Prevent Head Injuries?

A cycling enthusiast asked me about helmets. It seems compellingly obvious to me that a head impacting the pavement without a helmet is likely to sustain more damage than a head protected by a helmet. He challenged that, citing a...

/ May 19, 2015

Screening for disease in people without symptoms: The reality

One of the most contentious questions that come up in science-based medicine that we discuss on this blog is the issue of screening asymptomatic individuals for disease. The most common conditions screened for that we, at least, have discussed on...

/ February 2, 2015

Hot-Zone Schools and Children at Risk: Shedding light on outbreak-prone schools

The subject of parental vaccine refusal and the impact that has on disease outbreaks has been covered many times on SBM and elsewhere. I apologize to our readers who are growing tired of the subject, but there is perhaps no...

/ January 30, 2015

Is cancer due mostly to “bad luck”?

One of the more difficult conversations to have with a patient as a cancer doctor occurs when a patient, recently informed of her diagnosis of, for example, breast cancer, asks me, “Why did I get this? What caused it?” What...

/ January 5, 2015

Breast cancer myths: No, antiperspirants do not cause breast cancer

Four weeks ago, I wrote a post in which I explained why wearing a bra does not cause breast cancer. After I had finished the post, it occurred to me that I should have saved that post for now, given...

/ October 6, 2014

Autism Prevalence Unchanged in 20 Years

That there is an “autism epidemic” is taken as a given by those who feel autism has a dominant environmental cause. The Age of Autism blog, for example, bills itself as a, “Daily Web Newspaper of the Autism Epidemic.” The...

/ September 10, 2014

One more time: No, wearing a bra does not cause breast cancer

EDITOR NOTE: THERE IS AN ADDENDUM, ADDED SEPTEMBER 10. Besides being a researcher and prolific blogger, I still maintain a practice in breast cancer surgery. It’s one of the more satisfying specialties in oncology because, in the vast majority of...

/ September 8, 2014

Ebola outbreaks: Science versus fear mongering and quackery

“Ebola virus particles” by Thomas W. Geisbert, Boston University School of Medicine – PLoS Pathogens, November 2008 doi:10.1371/journal.ppat.1000225. Licensed under CC BY 2.5 via Wikimedia Commons. Without a doubt the big medical story of the last week or so has...

/ August 4, 2014

PETA Embraces Autism Pseudoscience

PETA (People for the Ethical Treatment of Animals) has a history of (as the old saying goes) using science as a drunk uses a lamppost – for support rather than illumination. In that way they are typical of ideological groups....

/ May 28, 2014

The 2014 Ohio Mumps Outbreak

As I write this post, a large outbreak of mumps is ongoing in Columbus, Ohio. The city, which on average sees a single case each year, has seen over 250 since February. To put things in further perspective, only about...

/ April 25, 2014