Weekly Health Update:
Aspirin & Breast Cancer Survival
"A critical weekly review of important new research findings for health-conscious readers..."
By, Robert A. Wascher, MD, FACS
The information in this column is intended for informational purposes only, and does not constitute medical advice or recommendations by the author. Please consult with your physician before making any lifestyle or medication changes, or if you have any other concerns regarding your health.
Welcome to Weekly Health Update
“A critical weekly review of important new research findings for health-conscious readers”
ASPIRIN & BREAST CANCER SURVIVAL
Breast cancer tumors, like many other types of cancer, produce increased amounts of chemicals called prostaglandins. As with many other types of cancer, prostaglandins are thought to play an important role in the growth and spread of breast cancer.
Aspirin belongs to a class of drugs known as NSAIDs (non-steroidal anti-inflammatory drugs). Like other NSAIDs, aspirin is able to block the activity of the prostaglandin-producing enzyme cyclooxygenase (COX). Moreover, previous research has indicated that, in addition to decreasing prostaglandin production in the body, aspirin also reduces the levels of estrogen in the body (approximately 90 percent of breast cancers are stimulated to grow in the presence of estrogen).
Previous research on aspirin as a breast cancer prevention drug has resulted in contradictory findings (although aspirin and other NSAIDs have clearly been shown to reduce the incidence of colorectal polyps and colorectal cancer, and other cancers as well). However, a newly published study, in the Journal of Clinical Oncology, adds weight to prior evidence that the regular intake of aspirin may significantly decrease the risk of breast cancer recurrence, and the risk of death due to recurrent breast cancer.
The enormous Nurses’ Health Study is a prospective public health research study that began in 1976 with more than 120,000 female nurses in the United States. Every 2 years, this huge cohort of women completes detailed personal questionnaires regarding diet and lifestyle factors related to cardiovascular disease and cancer. Between 1976 and 2002, more than 4,000 nurses participating in this study were newly diagnosed with breast cancer. The researchers conducting this landmark study then analyzed the incidence of breast cancer recurrence, and the risk of death, among these 4,164 breast cancer patients as a function of their aspirin intake. (Other cancer-associated diet and lifestyle risk factors were also analyzed, as well.)
In this huge prospective public health trial, regular aspirin intake was found to significantly reduce the risk of death due to breast cancer. Taking aspirin 2 to 5 times per week was associated with a 71 percent reduction in the relative risk of death due to breast cancer, while 6 to 7 days of aspirin use per week was associated with a 64 percent reduction in the relative risk of cancer-associated death. Importantly, this apparent aspirin-associated reduction in the risk of death due to breast cancer recurrence was observed in women with both early-stage and more advanced breast cancers, in both premenopausal and postmenopausal women, in both obese and non-obese women, and in women with estrogen-sensitive and estrogen-resistant tumors.
While this study’s primary weakness is that (like most epidemiological studies) the collected data was primarily based upon patient questionnaires, the Nurses’ Health Study continues to be a carefully conducted prospective study with very stringent data quality controls in place.
To summarize the important findings of this study: Among women previously diagnosed with breast cancer, taking aspirin for 2 or more days per week was associated with a significant reduction in the risk of both breast cancer recurrence and death due to breast cancer. (As always, I recommend that you discuss the potential risks and benefits of regularly taking aspirin, or any other new medication, with your doctor before making such changes.)
To learn more about the potential role of NSAIDs in cancer risk reduction, look for the publication of my new landmark book, “ A Cancer Prevention Guide for the Human Race,” in the spring/summer of this year.
I and the staff of Weekly Health Update would again like to take this opportunity to thank the nearly 120,000 new and returning readers who visited our premier global health information website last month. As always, we enjoy receiving your stimulating feedback and questions, and I will continue to try and personally answer as many of your inquiries as I possibly can.
Disclaimer: As always, my advice to readers is to seek the advice of your physicianbeforemaking any significant changes in medications, diet, or level of physical activity
Dr. Wascher is an oncologic surgeon, professor of surgery, cancer researcher, oncology consultant, and a widely published author
For a different perspective on Dr. Wascher, please click on the following YouTube link:
(Anticipated Publication Date: Summer of 2010)
Send your feedback to Dr. Wascher at:
Copyright 2007 - 2010
Robert A. Wascher, MD, FACS
All rights reserved
Dr. Wascher's Archives:
3-21-2010: Obesity, Alcohol & Liver Disease
3-14-2010: Nuts, Diet & Obesity
2-28-2010: Soy Isoflavones & Recurrent Prostate Cancer
2-14-2010: Pancreatic Cancer Risk, Sodas & Juice
1-31-2010: Concord Grape Juice Improves Memory
1-24-2010: Mozart, Music, Babies & Health
1-17-2010: Breast Cancer, Physical Therapy & Lymphedema
1-3-2010: Ginkgo Biloba, Memory & Cognitive Health
12-20-2009: CT Scans & Cancer Risk
11-29-2009: Exercise & Prostate Cancer Risk
11-22-2009: Genistein (Soy Isoflavone) & Prostate Cancer
11-15-2009: Breast Cancer Treatment & Chronic Pain
1-8-2009: Vitamin D & Breast Cancer Risk
11-1-2009: Exercise & Prostate Cancer Risk
10-25-2009: HPV Virus & Risk of Breast Cancer
10-11-2009: Vitamin D & Falls in the Elderly
10-4-2009: Surgery, NSQIP, Complications & Death
9-27-2009 Stress, Heart Disease, Exercise & Death
9-20-2009: Vitamin D & Colorectal Cancer Survival
9-13-2009: H1N1 Swine Flu Update
9-7-2009: Green Tea, Aging & Lifespan
8-30-2009: Irritable Bowel Syndrome (IBS), Diet & Fiber
8-23-2009: Update on Prostate Cancer and Cryotherapy
8-2-2009: Honesty, Dishonesty & Brain Function
7-26-2009: Coronary Artery CT Scans & Cancer Risk
7-12-2009: Breast Cancer & Metformin (Glucophage)
7-5-2009: Prostate Cancer & Green Tea
6-21-2009: Red Yeast Rice, Statins & Cholesterol
6-7-2009: Diet, Soy & Breast Cancer Risk
5-31-2009: Diet and Prostate Cancer Risk
5-24-2009: Diabetes, Glucose Control & Death
5-10-2009: Hemorrhoids & Surgery
4-26-2009: Are We Really Losing the War on Cancer?
4-19-2009: Exercise in Middle Age & Risk of Death
4-12-2009: Can Chronic Stress Harm Your Heart?
3-15-2009: Depression, Stress, Anger & Heart Disease
10-26-2008: Smoking & Quality of Life
10-19-2008: Agent Orange & Prostate Cancer
10-12-2008: Pomegranate Juice & Prostate Cancer
9-21-2008: Does Tylenol® (Acetaminophen) Cause Asthma?
4-27-2008: Stents vs. Bypass Surgery for Coronary Artery Disease; The “DASH” Hypertension Diet & Cardiovascular Disease Prevention; Testosterone Therapy for Women with Decreased Sexual Desire & Function
4-6-2008: Human Papilloma Virus (HPV), Pap Smear Results & Cervical Cancer; Human Papilloma Virus (HPV) Infection & Oral Cancer; Hormone Replacement Therapy (HRT) & the Risk of Gastroesophageal Reflux Disorder (GERD)
12-16-2007: Honey vs. Dextromethorphan vs. No Treatment for Kids with Night-Time Cough, Acupuncture & Hot Flashes in Women with Breast Cancer, Physical Activity & the Risk of Death, Mediterranean Diet & Mortality