Showing posts with label breast cancer research. Show all posts
Showing posts with label breast cancer research. Show all posts

Monday, October 22, 2007

Mass Cancer Study

News about an American Cancer Society study from breastcancer.org
U.S. cancer group launches mass cancer study

WASHINGTON (Reuters) - The American Cancer Society said it was looking for half a million volunteers willing to let researchers watch them for the next 20 years to see if they get cancer.

The aim is to match similar big studies in Europe and Asia that are looking on a large scale for the environmental and lifestyle factors that cause cancer, the second-leading cause of death in the United States after heart disease.

"This type of study involves hundreds of thousands of people, with diverse backgrounds, followed for many years, with collection of biological specimens and assessments of dietary, lifestyle and environmental exposures," Eugenia Calle, managing director of analytic epidemiology at the American Cancer Society, said in a statement.

"It also requires active follow-up to discover if and when study participants develop cancer."

The group will recruit men and women between the ages of 30 and 65 who have never been diagnosed with cancer. They will give blood to be tested and answer questionnaires at various times over the next 20 years.

Similar big studies have confirmed the link between cigarette smoking and lung cancer, shown that obesity increases the risk of several cancers, and linked aspirin use to a lower death rate from colon cancer.

They have also found evidence that defied conventional wisdom, such as the Women's Health Initiative study that found hormone replacement therapy actually raises the risk of breast cancer, stroke and heart attack.

Tuesday, October 16, 2007

On Becoming A Breast Cancer Survivor


Harvard Women's Health Watch | October 2006

On becoming a breast cancer survivor

Getting through treatment is only the beginning.

The impact of breast cancer is as individual as the women who survive it. It can be an arduous though temporary challenge or an experience so transformative that it divides existence into two parts — before and after.

Perry Colmore has experienced the disease both ways. When she was 45, she was diagnosed with lobular carcinoma in situ, a noninvasive disease that signals an elevated risk for invasive breast cancer. Given the choice of preventive double mastectomy or simply removing the small tumor, she opted for a lumpectomy. “I breezed right along, assuming I’d be among the 80% who don’t have a recurrence,” she says.

And so she was — for seven years. Then a lump in her other breast turned out to be an invasive cancer that had already reached 12 lymph nodes. She underwent a mastectomy followed by radiation and chemotherapy.

Colmore has been cancer-free for more than a decade, but her health has suffered. Radiation treatments damaged one of her lungs, causing wheezing and breathlessness. She’s weathered bouts of pleurisy and pneumonia. And intensive antibiotic therapy for her lung diseases triggered severe diarrhea, resulting in a 40-pound weight loss.

Colmore’s experience isn’t typical, but it does suggest the range of later effects that can follow in the wake of breast cancer. The good news is that most breast cancer survivors are living long past the five-year survival benchmark of yesteryear. But many also find themselves facing the long-term consequences of the treatments that saved their lives.

Growing recognition of survivor needs

As the ranks of cancer survivors have swelled to more than 10 million, their health has attracted increasing attention from scientists and physicians. The Institute of Medicine (IOM) has formed an expert committee to consider the quality of life and care of cancer survivors. The panel’s report, From Cancer Patient to Cancer Survivor: Lost in Transition, published in 2005, acknowledged that cancer care too often ends when patients complete their initial treatments. There may be little communication between the patients’ oncology teams and their primary care doctors. The IOM advises physicians to craft a “survivorship plan” to guide health care in the years following treatment.

Several large cancer hospitals around the country, such as Dana-Farber Cancer Institute in Boston, Fred Hutchinson Cancer Research Center in Seattle, and Memorial Sloan-Kettering Cancer Center in New York, have already instituted special programs or clinics for survivor care. At these centers, clinicians specialize in keeping cancer patients healthy and strong, reducing the risk of subsequent disease and, for breast cancer survivors, recognizing and treating the effects of breast cancer therapy.

Schedule of follow-up exams for breast cancer survivors

Exam

When

Physical exam

  • Every 3–6 months during the first 3 years after treatment

  • Every 6–12 months during the 4th and 5th year after treatment

  • Annually after 5 years

Breast self-exam

Monthly

Mammogram

Annually

Pelvic exam

Annually

Source: Guidelines developed by the American Society of Clinical Oncology

Treatment’s toll on the body

Cancer survivors are at risk for two kinds of side effects from treatment: Long-term effects, which begin during therapy and persist after it is completed, and late effects, which arise months or even years after treatment has ended.

The most common long-term effects include the following:

Fatigue. About 30% of breast cancer survivors are fatigued for five years or more after successful treatment. Any number of physical factors, including anemia and inflammation resulting from radiation or chemotherapy and loss of muscle mass, can account for fatigue during and after treatment. The psychological toll of treatment can also be exhausting. Though there’s little research on the subject, many women continue to shoulder responsibilities for jobs and managing households during and following their cancer treatment. Who wouldn’t be exhausted?

Weight gain. For reasons that science hasn’t fully explained, women undergoing breast cancer chemotherapy gain an average of five to eight pounds. Moreover, the excess poundage is all fat, rather than a combination of fat and lean tissue.

Nerve damage. Surgery can damage nerves in the treated breast and chest, resulting in numbness or pain. Chemotherapy may affect peripheral nerves, particularly those in the hands or feet.

Late effects can include these:

Lymphedema. Up to 25% of breast cancer survivors experience some degree of arm swelling following the removal of underarm lymph nodes, which is essential for evaluating the extent of the disease. Lymph node excision can damage the lymphatic drainage system, causing fluid to build up in the arm on the affected side. Lymphedema can appear weeks or months after surgery and is exacerbated if the arm is injured or infected.

Menopause discomforts. After breast cancer treatment, many women take tamoxifen, a selective estrogen blocker, for five years to prevent a recurrence. On the positive side, tamoxifen increases bone density and improves cholesterol. But it also produces menopausal symptoms, primarily hot flashes and vaginal dryness.

Osteoporosis. Women who undergo menopause following chemotherapy have a higher rate of bone loss than women who have a natural menopause. Aromatase inhibitors, such as anastrozole (Arimidex), letrozole (Femara), and exemestane (Aromasin), which are frequently a part of breast cancer therapy, block the production of estrogen in fat and other tissues. Treatment with these drugs is associated with a higher risk of fractures than tamoxifen therapy and may also be responsible for joint and muscle pain.

Subsequent cancer. Breast cancer survivors have an increased risk of developing cancer in the other breast. Also, some treatments increase the probability of developing certain other forms of cancer, although the risk is very low. For example, tamoxifen is associated with an increase in endometrial cancer risk, and high-dose cyclophosphamide therapy heightens the risk of acute myeloid leukemia.

Lung damage. Lung tissue can be damaged if radiation to the chest cavity reaches the lung. In about 1% of survivors, it leads to radiation pneumonitis, an inflammatory condition that usually occurs two to three months after treatment and can result in susceptibility to respiratory infection.

Congestive heart failure. Cardiac damage is increasingly rare as chemotherapy doses decline, but women who received high doses of doxorubicin (Adriamycin) may sustain damage to the heart muscle. Such damage can result in fluid buildup in the body and lungs, making it more difficult to breathe and exercise.

Breast cancer’s effects on the psyche

The end of treatment is one of the most stressful events in the cancer experience. Often friends and family expect a woman to be fully engaged in life the day she finishes treatment. But while a breast cancer patient may rejoice that radiation and chemotherapy have ended, she typically feels anything but normal. Not only is her body irrevocably changed, she’s also likely to be on uncertain emotional terrain.

“What others usually don’t realize is that the recovery from treatment may take as long as the treatment itself,” says Hester Hill Schnipper, Director of Oncology Social Work at Beth Israel Deaconess Medical Center in Boston. Schnipper and other health professionals who work with cancer survivors have observed that the emotional effects of cancer therapy are far less recognized than the physical effects, yet they are just as profound.

Typically, a woman marshals all her psychological defenses to get through treatment. When therapy is over, she can finally let her guard down but then may be flooded with intense and conflicting emotions. The occurrence and intensity of reactions vary from woman to woman, but most experience the following:

Fear and anxiety. For women who have just completed chemotherapy or radiation — or five years of tamoxifen therapy — the end of active cancer treatment can be disconcerting. After months of regular medical care and attention, they often find themselves abruptly severed from the oncology team that’s sustained them during treatment. Equally common, and more distressing, is the specter of recurrence, which can color every aspect of life.

Grief. Breast cancer brings loss — be it as minor as the claim to perfect health or as monumental as the ability to have children. Grieving is a natural response to loss, and it may take months or years to complete.

Erosion of self-image. The physical effects of treatment — loss of a breast, hair loss, weight gain, radiation burns, and surgical scars — are reminders of one’s vulnerability. Breast cancer survivors may feel that they’re less attractive and that their vitality is diminished. The adjustments can be especially hard for young women who are thrown into menopause by chemotherapy.

Changes in intimate relationships. It goes without saying that a woman’s sex life is affected by breast cancer. Illness is a notorious thief of libido. In addition, a survivor’s partner may feel breast cancer’s toll on body and body image as deeply as the survivor herself.

Effects on the family. Breast cancer is a family affair. Family members are likely to want to get the household back to normal after treatment ends, and they may not be patient with the partner or mother who needs more time to recover.

Resources for survivors

After Breast Cancer: A Common-Sense Guide to Life After Treatment, Hester Hill Schnipper, Bantam Books, 2006

LIVESTRONG SurvivorCare
866-235-7205 (toll free)
www.livestrong.org

Cancer Survivors Network
American Cancer Society
800-227-2345 (toll free)
www.acscsn.org

The Wellness Community
888-793-9355 (toll free)
www.thewellnesscommunity.org

Breast Cancer: Strategies for Living, a Harvard Medical School Special Health Report, Harvard Health Publications, 2006

Living Through Breast Cancer (from Harvard Medical School) by Dr. Carolyn Kaelin, McGraw-Hill, 2005

The Breast Cancer Survivor's Fitness Plan (from Harvard Medical School) by Dr. Carolyn Kaelin, McGraw-Hill, 2006

Being a survivor

Breast cancer is a rough storm, but many women weather it well, buoyed by gratitude for life, hope for the future, and the support of loved ones. Some, like Perry Colmore, use it as the fulcrum for a major life change. When breast cancer returned, Colmore was a newspaper editor. As she experienced the intensity of the disease, she decided that it was a story worth telling. She told it through the experiences of 40 breast cancer survivors in the photo-essay book, Living with Breast Cancer: 39 Women and One Man Speak Candidly about Surviving Breast Cancer (Andover Townsman, 1997).

Perry and her husband also took stock of their life together. Their children were grown, so they traded their suburban home for an apartment in the city and a house on the beach. She quit her job to devote more time to working with breast cancer patients. She now volunteers at a hospital as a companion for women undergoing treatment and leads a cancer support program at her church. “I can’t say that I’m happy I got cancer, but I’m happy with my life,” she says.

Getting the help you need

If you’re a breast cancer survivor, these steps may help:

Work closely with your primary care doctor. According to Jennifer Potter, M.D., director of the Women’s Health Program at Boston’s Beth Israel Hospital, it’s important to make sure your clinician has your complete cancer history — including surgical reports, radiology records, and drug information. At your first post-treatment visit, you may want to discuss your treatment experience and openly air your fears. If your doctor seems ill at ease with your new status, find one who has experience with cancer survivors.

Join a support group. Breast cancer survivorship may not be a sorority you ever intended to join, but its ranks are legion. It can be therapeutic to talk with someone who’s walked in your shoes. If you’re looking for a specific type of survivor group, for example, single women or mothers of teenagers, there’s a good chance you can find it — if not in your community, then possibly online.

Stabilize your relationships. If cancer has put a strain on your relationships or unearthed problems that took root earlier, consider getting help. A mental health professional can help you develop healthier ways of interacting.

Treat yourself. When you were sick, it was probably comforting to have others take care of you. You may not be a patient any more, but there’s no reason for the nurturing to end. Make a list of things that might give you pleasure — from a vase of fresh flowers to a visit to a day spa — and schedule them into your life.

Invest in the future. This can be something as small as planting an amaryllis bulb to bloom in a few months or as large as launching a new career. Planning for the future is one of the best ways to overcome the fear that it won’t be there.

Tuesday, October 09, 2007

Breast Cancer and Alcohol


The following article is from The Society for Women's Health Research. Stop by the site for more information on a broad array of women's health issues, not just cancer.
http://www.womenshealthresearch.org

Wine, women and... spirits, beer and breast cancer risk

Barcelona, Spain: One of the largest individual studies of the effects of alcohol on the risk of breast cancer has concluded that it makes no difference whether a woman drinks wine, beer or spirits (liquor). It is the alcohol itself (ethyl alcohol) and the quantity consumed that is likely to trigger the onset of cancer. The increased breast cancer risk from drinking three or more alcoholic drinks a day is similar to the increased breast cancer risk from smoking a packet of cigarettes or more a day

Speaking at a news briefing today (Thursday) at the European Cancer Conference (ECCO 14) in Barcelona, Dr Arthur Klatsky said: "Population studies have consistently linked drinking alcohol to an increased risk of female breast cancer, but there has been little data, most of it conflicting, about an independent role played by the choice of beverage type."

Dr Klatsky, adjunct investigator in the Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA, and his colleagues studied the drinking habits of 70,033 multi-ethnic women who had supplied information during health examinations between 1978-1985. By 2004, 2,829 of these women had been diagnosed with breast cancer. In one analysis, the researchers compared the choice of drink amongst women who tended to favour one type of drink over another with women who had no clear preference. They also looked for any association between the frequency of drinking one type of alcoholic drink over another. Finally, they examined the role of total alcohol intake, comparing it with women who drank less than one alcoholic drink a day.

They found that there was no difference in the risk of developing breast cancer between wine, beer or spirits. Even when wine was divided into red and white, there was no difference. However, when they looked at the relationship between breast cancer risk and total alcohol intake, the researchers found that women who drank between one and two alcoholic drinks per day increased their risk of breast cancer by 10% compared with light drinkers who drank less than one drink a day; and the risk of breast cancer increased by 30% in women who drank more than three drinks a day.

When they looked at specific groups, stratified according to age or ethnicity, the results were similar.

Dr Klatsky said: "Statistical analyses limited to strata of wine preferrers, beer preferrers, spririts preferrers or non-preferrers each showed that heavier drinking, compared to light drinking, was related to breast cancer risk in each group. This strongly confirms the relation of ethyl alcohol per se to increased risk."

He continued: "A 30% increased risk is not trivial. To put it into context, it is not much different from the increased risk associated with women taking oestrogenic hormones. Incidentally, in this same study we have found that smoking a pack of cigarettes or more per day is related to a similar (30%) increased risk of breast cancer."

Although breast cancer incidence varies between populations and only a small proportion of women are heavy drinkers, Dr Klatsky said that a 30% increase in the relative risk of breast cancer from heavy drinking might translate into approximately an extra 5% of all women developing breast cancer as a result of their habit.

Other studies, including research from the same authors, have shown that red wine can protect against heart attacks, but Dr Klatsky said that different mechanisms were probably at work.

"We think that the heart protection benefit from red wine is real, but is probably derived mostly from alcohol-induced higher HDL ("good") cholesterol, reduced blood clotting and reduced diabetes. None of these mechanisms are known to have anything to do with breast cancer. The coronary benefit from drinking red wine may also be related to favourable drinking patterns common among wine drinkers or to the favourable traits of wine drinkers, as evidenced by US and Danish studies."

Dr Klatsky said that all medical advice needed to be personalised to the individual. "The only general statement that could be made as a result of our findings is that it provides more evidence for why heavy drinkers should quit or cut down."

He concluded: "This has been fascinating research. Our group has been involved in studies of alcohol drinking and health for more than three decades, including in the area of heart disease. We are fortunate to have data available about a large, multi-ethnic population with a variety of drinking habits."