Close X
Get more out of
by joining the site for free
Free 17-point plan to great health
Twice weekly e-news bulletins
Access to our News, Forums and Blogs
Sign up for free and claim your
17-point plan to great health
Free 17-point plan to great health

Twice weekly e-news bulletins

Access to our News, Forums and Blogs

If you want to read our in-depth research articles or
have our amazing magazine delivered to your home
each month, then you have to pay.

Click here if you're interested
Helping you make better health choices

What Doctors Don't Tell You

In shops now or delivered to your home from only £3.50 an issue!

July 2020 (Vol. 5 Issue 5)

Osteoporosis: a load of old bones

About the author: 

Osteoporosis: a load of old bones image

Currently, most screening systems measure bone mineral density (BMD)

Currently, most screening systems measure bone mineral density (BMD). Susan Ott, associate professor at the University of Washington in Seattle, has warned of high levels of imprecision in screening systems and multiple measurement techniques, which is particularly worrying when women are using the results to decide whether or not to take HRT. In addition, Ott argues that since bone density and bone strength aren't necessarily related, there may be no point in measuring BMD (BMJ, April 9, 1994).

However, even if BMD were an indicator of bone strength, changes are not usually reversible, and very low density might be detected too late for most effective interventions (BMJ, Jul 22 1995).

An earlier study concluded that BMD measurements are a poor screening test for future hip fracture. It found that among all women screened, thr group at highest risk had less than half the fractures over a nine-year peril (Ann Intern Med, 1986; 104:817-23).

A large review of published work on BMD screening has concluded that BMD screening has never been shown to be effective in preventing osteoporotic fracture. Measurements vary at different times and with different equipment, and BMD varies very little between the groups who will and won't go on to suffer fracture (Bristol: Health Care Evaluation Unit, University of Bristol, 1992.)

The majority opinion from North America and the UK is against random screening. Nevertheless, measuring bone mass may be an important tool in the diagnosis of osteoporosis in high-risk groups and for monitoring some patients (BMJ, June 10, 199S). If you get a low reading, it might be a good idea to get a second opinion and also to check the age of the equipment and the experience of the operator.

Safety-wise, DEXA, the most widely used system, uses lower doses of radiation than single-photon absorptiometry (SPA), dual-photon absorptiometry (DPA) and quantitative computed tomography (QCT). The average skin exposure for DEXA is I to 3 mrad per scan (compared to 8-10 mrads for chest x-rays, for example). QCT uses the highest radiation dose.

Acidophilus absent in test image

Acidophilus absent in test

You may also be interested in...

Support WDDTY

Help support us to hold the drugs companies, governments and the medical establishment accountable for what they do.


Latest Tweet


Since 1989, WDDTY has provided thousands of resources on how to beat asthma, arthritis, depression and many other chronic conditions..

Start by looking in our fully searchable database, active and friendly community forums and the latest health news.

Positive SSL Wildcard

Facebook Twitter

© 2010 - 2020 WDDTY Publishing Ltd.
All Rights Reserved