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Junk food doesn't just go onto your hips - it gets into your hips
September 14, 2012
By Cy Frank
and Ron Zernicke
WINNIPEG, MB, Sep 14, 2012/ Troy Media/ – If you think junk food goes directly onto your hips, you’re right. But it gets worse. It gets into your hips, and into other bones in the body, too.
Junk food, or more precisely, food that is high in fat and sugar, robs the skeleton of the building blocks it needs to grow and remain strong to ward off degenerative conditions like osteoporosis.
There are two mechanisms for this bone robbery.
First, a diet high in saturated fats and sugar blocks ingested calcium from being absorbed, causing it to be excreted in the urine. Thus, the calcium needed for healthy bones washes through the body and is lost.
Second, saturated fats tend to form insoluble ‘soaps,’ which coat the intestines. This coating becomes a barrier to the calcium bones need. Thus, the calcium from the cheese on a burger will pass through the intestines mainly unused.
The picture is not pretty. Junk food layers fat onto a skeleton that it weakens of the ability to support the extra weight.
Approximately two million Canadians suffer from osteoporosis, a disease known as the ‘silent thief’ because, with no symptoms, it robs the bone of tissue leaving it with thousands of tiny pores. Porous bones can break with little stress.
Women are particularly at risk because their rate of osteoporosis is twice that of men. One in four women in Canada over the age of 50 has osteoporosis. And one in three women over 65 will suffer a hip fracture. About 20 per cent of hip fractures related to osteoporosis will result in death.
Treating osteoporosis and related fractures costs Canada’s public health system an estimated $1.9 billion per year.
Your diet can be an enemy or an ally in your battle against osteoporosis.
A growing child, near puberty and rapidly laying down new bone, could optimize his or her bone growth and accumulation by eating healthy foods and being physically active. The more bone developed, the lower the chance of fractures from osteoporosis later in life. This is primary prevention.
This child’s parents and grandparents, however, are past the stage of building bone. Their opportunity is in the secondary stage of prevention – middle and late adulthood. By following a healthy diet, being physically active and, if necessary, taking medication to slow bone loss, they can reduce their likelihood of fractures from osteoporosis.
A healthy diet is balanced and includes a variety of foods – vegetables, fruits and whole grains – and foods low in saturated fats, salt and sugar.
Maintaining a healthy diet, however, is not just about knowing which foods to select. It’s also about managing the environment that influences food choices. In this area, we have options.
For example, we can strictly limit the transfat levels in food products and ban, as California has, transfats in restaurants. Or we can require, as New York City has, that calorie counts be posted on menu boards in the same font size as price. We could also eliminate unhealthy foods at locations that should be promoting healthy lifestyles, such as in vending machines and at cafeterias in schools, recreational centres and hospitals.
Baby boomers were the first generation to grow up on fast food, and they have created a dietary legacy of high fat and sugar. Today, 1,600,000 Canadian children are obese or overweight – more than one of every four children.
Boomers’ themselves – the oldest now 66 – have reached the stage in life when they are most susceptible to bone and joint disorders.
But while concerns have been expressed about early onset of cardiovascular illness and diabetes from a high fat and sugar diet, scant attention has been paid to the exposure of millions of people to significantly increased risk of osteoporosis, premature joint wear and other skeletal conditions that can silently rob them of their health.
We can turn the tide, but we need to put measures in place now to protect our bones – and in the process, improve our overall health.
Cy Frank is an expert advisor with EvidenceNetwork.ca, and the Executive Director of Alberta Bone and Joint Health Institute. He is also an orthopaedic surgeon practicing in Calgary, professor of surgery in the Division of Orthopaedics, University of Calgary, and the McCaig Professor of Joint Injury and Arthritis Research. Ron Zernicke is a member of the Institute’s International Advisory Committee and is professor and dean, School of Kinesiology, University of Michigan.
The changes in our diet are to blame
The amount of saturated fats in Canadians’ diet has increased dramatically since the introduction of fast food in the 1950s. By the 1980s – three decades later – alarms finally began to sound about the dangers of eating too much fat. A high-fat diet was linked to heart disease, cancer, diabetes and obesity.
Food makers responded by flooding the market with new low-fat products and the claim ‘low in saturated fats’ began to occupy as prominent a position as the brand name on packages. Many of these products, however, replaced saturated fats with refined carbohydrates (sugar) in an effort to maintain market share. A dramatic rise in consumption of sugar followed, and this is now linked to major increases in diabetes and obesity in children and adults.
The end result of these changes is that North American society has an excess of convenient and low-cost food products that are high in saturated fats, or low in saturated fats but high in sugar content.
The high fat and sugar diet, known as HFS, now dominates western culture, despite increasing awareness of diet-related chronic diseases.
HFS is also now spreading to less economically developed nations where these chronic diseases may be even more damaging because of inadequate access to health care services.
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