People worry about cancer. It remains one of the scariest diagnoses because treatment can be harrowing and the outcome uncertain.
Millions of Americans try to avoid unnecessary exposure to carcinogens (cancer-causing chemicals). That’s why they spend more to buy organic food.
Many people don’t realize, however, that some of the pills they take every day might be carcinogens. The FDA requires drugs to be screened for cancer-causing potential before approval. It may come as a surprise that many medications on the market can cause cancer in some animal tests.
Even more disquieting, studies of certain drugs have raised red flags about cancer in humans. One of the most recent involves a popular diabetes drug called Actos. More than 11 million prescriptions for it were dispensed last year.
The FDA has just notified the public that taking Actos for more than a year may be associated with an increased risk of bladder cancer. French authorities have taken Actos off the market due to concerns raised by epidemiological studies. German regulators told doctors not to start any more patients on the drug.
In the U.S., doctors have been given limited advice about how to use this scary information. The FDA advises them not to prescribe Actos to patients with bladder cancer and to encourage patients to report symptoms such as painful urination, blood in the urine or urinary urgency.
This is not the first time physicians and patients have been left in a quandary about drugs that might cause cancer. Powerful immune-modulating drugs such as Enbrel, Humira and Remicade are also under scrutiny. These medications are very helpful for patients with rheumatoid arthritis, Crohn’s disease and hard-to-treat psoriasis.
The trouble is that these drugs have been associated with certain cancers such as lymphomas, leukemias, melanoma, leiomyosarcoma, kidney and liver cancer. Weighing the benefits and risks of such drugs becomes very challenging. Many people with rheumatoid arthritis couldn’t function without the relief these drugs provide.
The decision may be even more difficult in certain other conditions. Eczema (atopic dermatitis) can make life miserable. It is characterized by red, itchy, flaky skin that overreacts to irritants.
Topical immune-suppressing treatments, such as Elidel and Protopic, control eczema symptoms quite nicely. But the black box warning in the prescribing information can be distressing to parents: “Although a causal relationship has not been established, rare cases of malignancy (e.g., skin and lymphoma) have been reported in patients treated with topical calcineurin inhibitors…[Elidel and Protopic].”
Because cancer often takes many years to develop, there are few good studies that can provide definitive answers on this issue. It took decades and an enormous clinical trial (the Women’s Health Initiative) to reveal a clear connection between postmenopausal hormone use and the risk of breast cancer.
When the FDA issues a warning such as the one about Actos, millions of people with diabetes are left wondering if their drug might pose a cancer risk. The agency should require drug companies to follow up on such studies and clarify the risk so that doctors and patients can make better informed decisions.

It's almost Black Friday at The People's Pharmacy!

Black Friday at People's Pharmacy 2017
View Specials Now

Get The Graedons' Favorite Home Remedies Health Guide for FREE

Join our daily email newsletter with breaking health news, prescription drug information, home remedies AND you'll get a copy of our brand new full-length health guide — for FREE!

  1. MCS

    It is my understanding that the Women’s Health study linking an increased risk of breast cancer to breast cancer risk has just published new data adjusting the risk. You may want to check this information.

What Do You Think?

We invite you to share your thoughts with others, but remember that our comment section is a public forum. Please do not use your full first and last name if you want to keep details of your medical history anonymous. A first name and last initial or a pseudonym is acceptable. Advice from other commenters on this website is not a substitute for medical attention. Do not stop any medicine without checking with the prescriber. Stopping medication suddenly could result in serious harm. We expect comments to be civil in tone and language. By commenting, you agree to abide by our commenting policy and website terms & conditions. Comments that do not follow these policies will not be posted.

Your cart

Shipping and discount codes are added at checkout.