Tag Archive for: prostate

grilled meatGood news for people who love barbecue, hot dogs, burgers, and steak cooked on the grill: It pays to eat your veggies.

The key to this story is something called “PhIP.” A few years ago, noted Johns Hopkins scientist Bill Nelson, M.D., Ph.D., director of the Sidney Kimmel
Comprehensive Cancer Center, began investigating its role in cancer. PhIP is a funny little word. (Pronounced “fipp,” it’s a short name for a long chemical
compound.) It sounds so harmless: “Hey, let’s get PhIP and go over to the club for some tennis,” or “I don’t give a PhIP what you do,” or “Let’s do some
PhIP shots!” But it’s not.

PhIP is found in meats cooked at high temperatures. It is a “pro-carcinogen,” a chemical that turns into something that can attack and mutate DNA, and is
known to cause prostate, breast, and colorectal cancer in rats. Unfortunately, we create carcinogens, or cancer-causing agents, with every steak we grill
or piece of chicken we fry, and PhIP is one of them. In 2007, Nelson and pathologist Angelo De Marzo, M.D., Ph.D., reported in Cancer Research
that when rats are exposed to PhIP, DNA mutations occur in the prostate. Since then, they have learned much more about this little sucker’s role as a
dietary contributor to cancer. I recently wrote about Nelson’s work for Discovery, the research magazine for the Brady Urological Institute at Johns
Hopkins.

The scientists have discovered that veggies help counteract the effects of PhIP. “When we fed rats tomato and broccoli along
with PhIP, the animals lived longer and showed reduced incidence and severity of prostate neoplasms (new, abnormal cell growth; particularly of PIN,
prostatic intraepithelial neoplasia – funny-looking cells that are linked to prostate cancer), intestinal cancers and skin cancers as compared to rats fed
PhIP alone,” says Nelson. “This provides even more evidence that eating vegetables may protect against cancer-causing agents like those in overcooked
meats.”

grilled veggiesThere is a twist to the story: Food safety pays off, too.
Nelson, along with De Marzo and scientist Karen Sfanos, Ph.D., has also explored the idea that prostate cancer may involve a combination of “environmental insults” – bad things in the diet, plus something else that weakens the body, like an infection. They wondered whether chronic inflammation, caused by bacterial infection, would make a difference in rats that had consumed PhIP. Using a specific strain of E.coli isolated from a patient with chronic prostatitis/chronic pelvic pain syndrome, they found to their surprise that the charred food plus the nasty bug seemed to have a systemic effect.

Together, E.coli and PhIP caused an increase in the development and progression of cancer in the skin and digestive tract. (Note: many people have E.coli in their gut and it is harmless, but some strains can get into meat when it’s processed and can survive if the meat is undercooked.) The rats that received the double punch of E.coli plus PhIP fared worse than rats that ate the PhIP alone. In one study, the bacteria- and PhIP-consuming rats developed more precancerous lesions within the prostate and might have developed even more problems – except they also died sooner.

In further experiments, they found that “when we inoculated PhIP-fed rats with E.coli in the prostate, the animals developed acute and chronic
prostate inflammation out of proportion to that seen with PhIP ingestion or E.coli inoculation alone, and had more prostate neoplasms, intestinal
cancers, and skin cancers,” says Nelson. “This hints that prostate infections and dietary carcinogens might interact to promote chronic prostate
inflammation and prostate cancers, and that prostate infections might augment carcinogen effects on other tissues, as well.”

What does this mean for you? One, that if these things cause changes in the prostate, it’s a pretty good bet that they are hurting you elsewhere, as well,
so take precautions: eat a veggie in addition to a potato. Potatoes are delicious, but they don’t help fight cancer the way green, leafy vegetables and
tomatoes do. Two, tomatoes and broccoli probably aren’t the only vegetables that can help diffuse the bad effects of charred meat; these are just the ones
that were studied in this particular investigation. Three, don’t eat undercooked meat. You’re not just risking food poisoning, which comes in like a
freight train and goes away quickly; you may be adding to your risk of developing cancer.

Nelson, along with De Marzo, Sfanos, and Hopkins colleagues recently published two papers on these striking new findings in the journals PLoS ONE
and Cancer Prevention Research.

In addition to the book, I have written about this story and much more about prostate cancer on the Prostate Cancer Foundation’s website, pcf.org. The stories I’ve written are under the categories, “Understanding Prostate Cancer,” and “For Patients.”  As Patrick Walsh and I have said for years in our books, Knowledge is power: Saving your life may start with you going to the doctor, and knowing the right questions to ask. I hope all men will put prostate cancer on their radar. Get a baseline PSA blood test in your early 40s, and if you are of African descent, or if cancer and/or prostate cancer runs in your family, you need to be screened regularly for the disease. Many doctors don’t do this, so it’s up to you to ask for it.

 ©Janet Farrar Worthington

 

self portaitIf you are a man of African American descent – or a woman who loves him — I hope you read this. You are in the group that is hit the hardest by prostate cancer of all men in the world.

When you look at the men at highest risk of getting prostate cancer, one risk factor that stands out is having a family history of the disease – a father,brother, grandfather, or uncle, on either your mother’s or your father’s side of the family.

The other one is being black.

There are a bunch of reasons for this, including genetic differences in the androgen receptor, and lower levels of vitamin D, and diet, and socioeconomic differences in medical care, and some other things in the book I co-wrote with the great Johns Hopkins surgeon/scientist Patrick Walsh, called Dr. Patrick Walsh’s Guide to Surviving Prostate Cancer. But those things – while certainly important, and of potential help for researchers trying to treat or prevent the disease in the future — don’t even really matter to you right now.

[Tweet “When African American men are diagnosed with prostate cancer, it is likely to be a more aggressive form of cancer.”]

What you need to know is that when African American (AA) men are diagnosed with prostate cancer, it is likely to be a more aggressive form of cancer. You are more likely to need to go after that cancer – if I were your relative, I would tell you not even to think about watchful waiting, or active surveillance, or whatever a doctor might call getting a repeat biopsy 6 months to a year later, and continuing to watch that PSA. You can’t do that, because prostate cancer is most likely different in you, and you need to take it very seriously.

I recently interviewed Ted Schaeffer, M.D., Ph.D., Director of the Johns Hopkins Brady Urological Institute’s Prostate Cancer Program, for a publication called Johns Hopkins Urology. (Note: Schaeffer is now chairman of urology at Northwestern.) A few years ago, Schaeffer made some important observations about the differences in cancer between men of African ancestry and other men. He followed up on them with research, he is the leader in this field, still actively researching this, and his findings are saving lives in the AA community.

“African American men often present with more aggressive cancers than other men,” says Schaeffer. For example, if you are an African American man who has been diagnosed with Gleason 6 (a stage of cancer that is often treated successfully and cured) disease, you have “a one-third higher chance of having more aggressive cancer than the biopsy suggests.” Also, “we found that when these men have surgery, they have a higher likelihood of needing additional adjuvant treatment.” These findings, published in the journal, Urology, were based on the outcomes of more than 17,000 men who underwent radical prostatectomy at Johns Hopkins; 1,650 of them were of African ancestry and were not only more likely to have a higher-grade cancer and larger tumors, but to experience recurrence of cancer compared to Caucasian men.

This is particularly worrisome in a time of confusing medical information, when many men and their doctors worry about overtreatment of prostate cancer, about side effects from surgery or radiation that didn’t need to happen, because maybe that disease would never have progressed, and a man could have lived his whole life without the cancer ever causing a problem. Yes, there are lucky men like this, and in a future post we’ll talk about what the criteria are for safely watching cancer, instead of taking it out or blasting the crap out of it with radiation. If you are a black man, you are most likely not one of these lucky men. I’m sorry, but you just aren’t, and I want you to know that so you can do something about it.

Schaeffer initially found that AA men who could be candidates for active surveillance turned out to have a much higher chance of having aggressive disease if they later needed surgery. He and colleagues later proved in the surveillance group that “the chance of failing surveillance or being reclassified
(determining that the cancer is a different stage or grade than initially thought) is 30 percent higher for black men compared to white men. We also found that even after surgery, if you control for the grade and stage of the cancer,men of African ancestry are more likely to have their cancers come back. It
means that biologically, they’re probably different.”

Cancer tends to develop in a harder-to-biopsy, easier-to-miss part of the prostate in black men than in other men. I’m going to write more about this in the next post, but the take-home message here is this:

If you are a black man, and you’re age 40 and you haven’t had your PSA checked and you haven’t had a rectal exam to check for prostate cancer, you need to do it.

You don’t want to get a rectal exam? Please. Don’t tell me, or any woman who’s had kids, where it’s like a train station in the hospital exam and everyone’s looking up inside you, that you don’t want to get that exam. It’s not that bad, and it can save your life.

If you are getting regular PSA exams and your PSA is going up consistently, more than 0.4 ng/ml a year (say you have one test and it’s a 1.4. The next year, it’s 1.9, then 2.5), you should get a biopsy. Don’t look at the overall number. PSA hasn’t been around that long, and at first, doctors thought that a PSA lower than 4.0 was okay; unfortunately, they missed a lot of cancers with just a basic cutoff number, because all men are different, and many factors, such as a man’s age and the size of his prostate, can affect that number. Ted Schaeffer would tell you that you should get an MRI-guided biopsy, because the MRI can pick up cancers that the biopsy misses.

If cancer is found, you need to treat it. Not with herbs, or dietary changes, or exercise, or supplements, or watchful waiting. Seek curative, aggressive treatment.

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In addition to the book, I have written about prostate cancer on the Prostate Cancer Foundation’s website, pcf.org.  The stories I’ve written are under the categories, “Understanding Prostate Cancer,” and “For Patients.”  I firmly believe that knowledge is power.  Saving your life may start with you going to the doctor and knowing the right questions to ask.  I hope all men will put prostate cancer on their radar. Get a baseline PSA blood test in your early 40s, and if you are of African descent, or if cancer and/or prostate cancer runs in your family, you need to be screened regularly for the disease.  Many doctors don’t do this, so it’s up to you to ask for it.

©Janet Farrar Worthington