Bone scans are used to check for osteoporosis, a disease in which bones become fragile and more likely to break. Women are typically four times more likely than men to suffer from osteoporosis. Because there is a direct relationship between the lack of estrogen after menopause and the development of osteoporosis, most doctors advise older women to have bone density tests every year along with a mammogram.

The University of Arizona’s eight-year study of 10,000 post-menopausal women found that the results of a routine bone density test not only could reveal osteoporosis, it also may provide important clues in predicting breast cancer risk in older, post-menopausal women. The study, which looked at hip-bone mineral density T-score, found older women with high bone density twice as likely to develop breast cancer.

“High bone density is a marker of increased risk for breast cancer. We can use that piece of information to predict your breast cancer risk in the future,” said Zhao Chen, Ph.D, MPH, University of Arizona epidemiologist.

Bone density often means a higher production of estrogen, which researchers say may explain the correlation between high bone density and breast cancer risk.

Conversely, KABC-TV reports that some osteoporosis medications have been shown to prevent and even curtail breast cancer. For example, raloxifene (Evista) has already been FDA approved to treat both osteoporosis and prevent breast cancer in postmenopausal women at high risk of developing the disease.

SOURCE: Hormone Replacement Therapy › Strong bones in menopause may increase risk of breast cancer

Prempro and Premarin , along with Provera, which is made by Pfizer, have come under attack in recent years as mounting evidence revealed that the drugs can increase the risk of developing breast cancer. Plaintiffs lodging claims against the drug makers argue that the manufacturers failed to voice sufficient warning about the increased risk of developing breast cancer that the drugs present. Approximately 5,000 women have filed lawsuits against Wyeth, contending that the company’s HRTs (hormone replacement therapies) caused them to develop breast cancer.

A study monitoring 3,400 recipients of Aprela indicated no evidence of increased breast cancer rates, compared with women who received Evista or placebo. Aprela recipients also showed the same relatively lower rates of breast tenderness and pain as Evista and placebo recipients – a significant benefit considering that breast discomfort is the main reason why stop using menopause drugs

Other studies revealed that Aprela recipients experienced better sleep and diminished hot flashes compared to women who were treated with placebo. Increased bone density, improved sexual function, and less vaginal dryness were also evident in late-stage tests of Aprela.

Wyeth will submit Aprela to the FDA for approved use in the second half of 2009. If approved, the drug may provide a better line of treatment for postmenopausal women. Its marketing would also help the company offset continual losses resulting from its Prempro suits.

SOURCE: Hormone Replacement Therapy › Wyeth developing another HRT for menopause