Health & Fitness

While it has been said that the eyes are a window to the soul, a new study shows they could be a means for understanding diseases of the brain. According to new research, retinal scans can detect key changes in blood vessels that may provide an early sign of Alzheimer's, while offering important insights into how one of the most common Alzheimer's risk genes contributes to the disease.

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Researchers have observed a new feature of neural activity in the hippocampus - the brain's memory hub - that may explain how this vital brain region combines a diverse range of inputs into a multi-layered memories that can later be recalled.

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Breast cancer rates dropped by half in tandem with the discontinuation of hormone replacement therapy, according to a study published online in the Journal of the National Cancer Institute. The study was reported in the Telegraph in the United Kingdom.

The Telegraph said:

"Dr Prithwish De, of the Canadian Cancer Society, and colleagues, found that use of HRT dropped from 12.7 per cent in 2002 to 4.9 per cent in 2004.

During the same period breast cancer rates dropped by 9.6 per cent even though the same number of women were having mammography tests.

Between 2004 and 2006 use of HRT remained stable at around five per cent of women aged 50 to 59 but breast cancer rates began to increase again.

Dr De wrote: 'The results support the hypothesised link between the use of hormone replacement therapy and invasive breast cancer incidence and indicate that the sharp decline in breast cancer incidence in 2002 is likely explained by the concurrent decline in the use of hormone replacement therapy among Canadian women.'"

The study's authors said these numbers support existing evidence of the link between HRT and breast cancer.

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In January of this year, Oprah Winfrey invited Suzanne Somers on her show to talk about health tips. The 62-year-old actress uses bio-identical estrogen cream and progesterone on her other arm two weeks a month.

According to Somers, the bio-identical hormones are identical to the ones created by the human body, unlike conventional hormones, which are made from mare’s urine.

The result has been a media firestorm condemning both Somers and Oprah, including the hit piece in Newsweek linked below. The authors of the piece, Weston Kosova and Pat Wingert, argue that bio-identical hormones are just as synthetic as conventional hormones -- although they don’t much discuss the fact that conventional hormones are actually different from the 17-beta-estradiol made by your body, while the bio-identical hormones are 17-beta-estradiol itself.

The real reason for the attacks on bio-identical hormones?

As Somers points out, many doctors, scientists and media figures make a good deal of money off of the pharmaceutical industry.

And one thing you won’t see mentioned in the Newsweek article is the fact that Pat Wingert is the co-author of a pharmaceutically biased book on hormones and menopause, and that  Newsweek is heavily funded by pharmaceutical companies.

This resembles an incident a few years ago when the cattle industry actually sued Oprah Winfrey just for talking about Mad Cow Disease.

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The contraceptive pill may disrupt women's natural ability to choose a partner genetically dissimilar to themselves. This could result in difficulties when trying to conceive, an increased risk of miscarriage and long intervals between pregnancies. Passing on a lack of diverse genes to children could also weaken their immune systems.

Humans tend to be attracted to those with a dissimilar genetic make-up to themselves, maintaining genetic diversity, which is signaled by subtle odors. A research team analyzed how the contraceptive pill affects odor preferences, and found that the preferences of women who began using the contraceptive pill shifted towards men with genetically similar odors.

Not only could genetic similarity in couples lead to fertility problems, but it could ultimately lead to the breakdown of relationships when women stop using the contraceptive pill, as odor perception plays a significant role in maintaining attraction to partners, researchers said.

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Despite widespread publicity, the 2002 landmark study on the potential dangers of hormone therapy for postmenopausal women is completely unknown to most women. 

New research from the Stanford University School of Medicine discovered that only 29 percent of the women surveyed knew anything about the study two years later. Additionally, only 40 percent of the women were able to identify possible risks and benefits linked to hormone therapy. 

Hormone therapy is used to ease your symptoms of menopause, but has also been widely prescribed for preventive purposes, based in part on earlier observational studies that had suggested it could help protect women against heart disease, weak bones, and dementia. 

In July 2002, the Women's Health Initiative (WHI) abruptly ended its combination of estrogen and progestin therapy study, as their data discovered higher rates of breast cancer, heart attacks, strokes, and blood clots in the population taking the hormones, compared to those taking placebos. 

Later, in April 2004, WHI also halted the portion of the study for estrogen-only therapy, after finding the hormone did not offer any protective heart disease prevention, but rather increased your risk of stroke and blood clots. 

The WHI findings triggered enormous changes in the use of hormone therapy, and prescriptions had dropped 38 percent by 2003. 

Senior author Randall Stafford, MD, PhD, said their latest survey indicates there's a huge problem in communicating crucial health information to patients effectively, which in turn is indicative of an even larger problem – ensuring that people can make informed decisions about their medical care. 

Menopause April 10, 2007

Women's Health Initiative June 21, 2007

WHI March 2, 2007 (The Estrogen-Alone Study Links)

Women's Health Initiative (The Estrogen-Plus-Progestin Study Links)

Eurekalert September 18, 2007

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Scientists have identified a new immunotherapy to combat the hepatitis B virus (HBV), the most common cause of liver cancer in the world.

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