- ALLERGY, RESPIRATORY
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- Climate Change Could Sting Allergy, Asthma Sufferers
- ALTERNATIVE MEDICINE
- Uncover Why Turmeric Helps You Heal
- Acupuncture May Ease Depression During Pregnancy
- Eight Spiritual Universal Principles in the Art of Practice
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- Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
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- Many Americans Fall Short on Their Vitamin D
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- Organ Donation Policies Vary Among Children's Hospitals
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- Salt Boosts Blood Pressure in High-Risk Patients
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- Eating Healthy : You Can Live Longer
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- GENERAL HEALTH
- Stressed and Exhausted: An Introduction to Adrenal Fatigue
- Dr Churchill & Ashley Pelton Interview 1 of 4
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- Many Children Will Outgrow Headaches
- Zen May Thicken Brain, Thwart Pain
- Ski Helmets Encouraged for All
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- Imaging Sheds Light on How Acupuncture Works
- Study Suggests Link Between Cell Phones and Brain Tumors
- 'Comfort Dogs' Come to Emotional Rescue
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- B-Vitamins Help Protect Against Stroke, Heart Disease
- Quitting Smoking Doubles Survival in Early Stage Lung Cancer
- Fatty Fish May Cut Heart Failure Risk in Men
- INFECTIOUS DISEASE
- Bacterial Infections May Succumb to Honey
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- KID'S HEALTH
- 6 Million U.S. Kids Lack Enough Vitamin D
- Frequent Feedings May Be Making Babies Fat
- Babies Cared For In Others Homes Might Become Heavy Toddlers
- MEN'S HEALTH
- Low Vitamin D Levels May Boost Men's Heart Attack Risk
- Drinking Green Tea May Slow Prostate Cancer
- Could Chinese Herb Be a Natural Viagra?
- MENTAL HEALTH
- Music Soothes Anxiety as Well as Massage Does
- Bullying Seems to Affect Kids Years Later
- Drink Away Dementia?
- PREGNANCY
- Placebo Acupuncture Tied to Higher IVF Pregnancies
- Woman in America Are Delaying Motherhood, Study Says
- Obesity May Affect Fertility in Young Womene
- SENIORS
- Laughter Can Stimulate a Dull Appetite
- Exercise Helps Reduce Falls in Young and Old
- High-Impact Activity May Be Good for Old Bones
Bone Loss Stable on Restricted Calorie Diet
By eHolistic.com Published: 09/23/2008
TUESDAY, Sept. 23 (HealthDay News) -- Overweight adults who eat a low-calorie diet that includes proper nutrition can lose weight and fat without experiencing significant bone loss, a new study says.
The study, by the team at Pennington Biomedical Research Center in Baton Rouge, La., included 46 healthy, overweight men and women (average age 37) assigned to one of four groups: The 11 participants in the control group ate a healthy diet; 12 others consumed 25 percent fewer calories than they expended per day; 12 created a 25 percent energy deficit by eating fewer calories and exercising five days a week; and 11 people ate a low-calorie diet (890 calories) a day until they achieved a 15 percent weight loss, at which time they switched to a weight maintenance plan.
All the diets contained the recommended levels of vitamin and minerals, and contained 30 percent fat, 15 percent protein and 55 percent carbohydrates, based on American Heart Association guidelines.
After six months, people in the control group had an average body weight reduction of 1 percent, compared with 10.4 percent in the calorie restriction group, 10 percent in the calorie restriction plus exercise group, and 13.9 percent in the low-calorie diet group.
At the start and end of the study, the researchers measured the participants' bone mineral density and blood markers of bone resorption and formation -- processes by which bone is broken down and regenerated on a regular basis.
"Compared with the control group, none of the groups showed any change in bone mineral density for total body or hip," the study authors wrote.
After six months, markers of bone resorption were increased in all three intervention groups. Markers of bone formation were lower in the calorie restriction group but remained the same in the low-calorie diet or calorie restriction plus exercise group.
"Our data do not support the notion that extreme weight loss (more than 10 percent) over short periods (three months) has a worse prognosis on bone health than gradual weight loss achieved over six months by moderate calorie restriction with or without aerobic exercise," the researchers wrote. "We speculate that in young individuals undergoing calorie restriction, minor adjustments in bone occur as a normal physiological adaptation to the reduced body mass. Further studies of longer duration are warranted and should include an assessment of bone architecture to ensure that bone quality is preserved with weight loss."
The study was published in the Sept. 22 issue of the journal Archives of Internal Medicine.
More information
The U.S. National Institute of Diabetes and Digestive and Kidney Diseases has more about weight loss.
-- Robert Preidt
SOURCE: JAMA/Archives journals, news release, Sept. 22, 2008
Last Updated: Sept. 23, 2008
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