David L. Katz, MD, responds to a reader in the September 2007 issue of The Oprah Magazine about the merits of eating soy in relation to preventing cancer. His response causes me to pause even more about jumping on any diet bandwagon.

Katz says we should eat soy foods -- just not too much because the evidence linking soy to breast cancer, for example, is mixed.

In comparing soy-eating Japanese women with American women who eat very little soy, researchers find lower rates of breast cancer in the Japanese women. But in a test tube, soy's plant estrogens can speed cancer cell growth. Maybe soy behaves differently in the body than it does in a tube. Or maybe soy has both negative and positive effects on breast cancer. Perhaps it's not soy at all. It could be that the populations eating soy are benefiting from not eating something else, like meat -- the saturated fat found in red meat has been linked to higher cancer rates. Replacing steak with something else may be the protective key.

David Foster was diagnosed with Advanced Renal Cell Carcinoma in April 2005. Translation: stage four kidney cancer and the sixth deadliest form of cancer. Not a great disease to acquire. Also not the end of the world. Just ask David who is busy working as a National Strategic Advisor in Augusta, Georgia, headlining within the independent magazine community, hanging out with dog Gracie, and documenting his journey in a blog he calls David Foster's Kicking Kidney Cancer's Arse.

He's no wimp, this guy. Just read his June 23 post, titled May kill me, but it ain't gonna beat me. He didn't let that hard-nosed kid Jerry whip him when he was eight -- he smacked him so hard in the lunchroom, Jerry was left stumbling and bleeding -- and he won't let cancer bully him either. Still, David admits: he is sick. He explains it all in a post he calls Mr. Foster, are you really sick?

David got an e-mail one day. It read, Mr. Foster, are you really sick? I read your blog and you don't sound sick.

I found David's website while researching about Glioblastoma Multiforme (GBM), the most aggressive type of brain tumor. I found his website to be very inspiring. My uncle died of GBM twenty years ago this coming holiday season. David is an 11 year survivor this year! You can visit David's website at www.davidmbailey.com.

How did you find out you had cancer?

I started getting these really bad headaches. One morning, I fell over and felt nauseous. My wife called 911 and I remember getting in the ambulance thinking it was silly. I had a small seizure in the ambulance and when we got to the ER, I had a major grand-mal seizure. They did a quick cat-scan and saw a large mass in my head so they put me on a helicopter and flew me to a bigger hospital where they operated the next morning to remove the baseball size tumor in my brain. The pathology came back with the bad news -- grade 4 glioblasoma multiform (GBM) Prognosis, 6 months to live.

What types of cancer treatments were recommended?

I originally saw a general oncologist who had one clinical trial to offer but it was a randomized study, meaning a computer would pick if I got the treatment. I thought that was stupid. Then he gave me the best advice possible -- he told me to see a NEURO oncologist -- someone who specialized in heads.

Don Herbert, also known as television's science teacher Mr.Wizard, died at his home Tuesday of bone cancer. He was 89.

Mr. Wizard's target audience was kids (baby boomers: you may already know this) and his lessons taught youngsters to use the thinking skills of scientists through workshop experiments using simple household items. His 1950s series Watch Mr. Wizard was so good it won a Peabody Award in 1954, and Herbert was one of David Letterman' first guests when the show Late Night With David Letterman debuted in 1982. Herbert's show made it to Nickelodeon too and ran from 1983 to 1991. Reruns were shown until 2000. Nickelodeon's Mr. Wizard episodes are available here.

A native of Waconia, Minnesota, Herbert graduated from LaCrosse State Teachers College in 1940; served as a U.S. Army Air Corps pilot during World War II; and worked as an actor, model, and radio writer before reaching fame on Mr. Wizard in Chicago -- and then New York -- on NBC.

He is survived by six children and stepchildren and by his second wife, Norma.

Glioblastoma Multiforme (GBM), also known as a grade IV astrocytoma, is the most common and most aggressive type of primary brain tumor. Although GBM can occur at any age, the disease is most commonly diagnosed after the age of 50.

I wanted to discuss this type of cancer and add it to the Cancer by the Numbers feature because it has directly affected my family. My 39-year-old uncle died of the disease in 1987. He only survived a year after diagnosis. It is disheartening that this disease has not seen any strides in improved survival rates over all these years.

The Numbers

GBM accounts for 52 percent of all primary brain tumor cases. Brain tumors account for one in every 100 cancers diagnosed annually in the United States. Most malignant brain tumors and brain cancers have spread from other tumors in the body to the skull, including cancers of the breast and lung, malignant melanoma and blood cell cancers.

Environmental groups claim some children's bath products contain a suspected cancer-causing chemical in amounts that reach or exceed safe limits. The chemical in question -- 1,4-dioxane -- is found in products made by companies such as Johnson and Johnson, Disney, Kimberly-Clark, and Gerber, says David Steinman, head of the environmental publishing company Freedom Press.

The Environmental Protection Agency (EPA) calls this chemical, already known to cause cancer in animals, a probable human carcinogen. But there is no real regulation on the petroleum-derived chemical and the Food and Drug Administration (FDA) only recommends cosmetic companies limit the concentration of 1,4-dioxane to 10 parts per million (ppm).

Studies show Johnson's Kids Shampoo Watermelon Explosion contains the maximum recommended level of 10 ppm. They also reveal that Kid Care's Hello Kitty Bubble Bath contains 12.3 ppm of the chemical. And two adult shampoos have been found to have twice the recommended level of this chemical that is typically a manufacturing by-product.

It's been reported that nearly 57 percent of all baby soaps contain 1,4-dioxane. But Iris Grossman, director of communications at Johnson and Johnson, stresses that all of her products are within FDA limits.

Cancer is not the only risky link to children's bath products. It seems these items are also linked to early puberty development. And this is concerning because a fast-paced growth rate combined with children's porous skin increases susceptibility to toxins that can enter the bloodstream. One breast cancer expert says an increase in breast cancer risk is linked to toxic exposures during the formative years of life.

Bruins rookie Phil Kessel is surviving testicular cancer. And the 19-year-old former University of Minnesota player, drafted in the first round this year, is talking about his shocking diagnosis and the surgery from which he is currently recovering.

Kessel, who is expected to rest for two weeks before returning to the ice, found a lump in his testicle and went immediately to his team internist, Dr. David Judge. Judge examined him, referred him for an ultrasound, and learned with Kessel that the lump was in fact cancer -- embryonal testicular cancer.

Both Judge and Kessel are happy to report that the cancer was localized to the right testicle -- which was removed during surgery -- and had not spread. Kessel, therefore, has a very low liklihood of recurrence.

Kessel, who has five goals and four assists in 27 games this season, says about his diagnosis, "I couldn't believe it. It was tough. I had a hard time with it."

Kessel thinks cancer will help him gain perspective on life. And he plans to speak out about his experience so others may benefit.

"If you're not feeling well go get checked out and make sure you're all right," he says. Getting checked out is what saved him -- and he hopes others will follow suit.

Kessel is the second Boston athlete to be diagnosed with cancer this year. Red Sox left-hander Jon Lester was diagnosed with lymphoma in August. With chemotherapy behind him, he is currently cancer-free. And so is Kessel.

Aerosmith bassist Tom Hamilton announced on Thursday -- via his publicist -- that he will miss the beginning of the band's upcoming tour and will rejoin the band in mid-October once he has fully recovered from radiation treatment for throat cancer.

Hamilton, 55, just completed seven weeks of radiation and plans to rest and heal in the company of family. In his absence, David Hull -- a longtime friend and former member of the Joe Perry Project -- will fill in as bassist. The Aerosmith tour -- Route of All Evil -- will begin on September 5 in Columbus, Ohio.

In 1995, Sam Donaldson was diagnosed with melanoma when a tumor was discovered in a lymph node in his groin. Donaldson blogged during last year's Blog for Hope event, where celebrities and public figures shared insights and personal stories of how cancer has affected their lives. Donaldson, a veteran investigative journalist, currently appears on the Sunday morning television talk show, This Week with David Brinkley. Donaldson blogged about joining the cancer club. As he pointed out, no one volunteers to join the cancer club but you are automatically enrolled if you are diagnosed with cancer. Once a member, there is important work to be done by the members.

"We work to obtain more money for research into the causes, prevention and cures for cancer and for the alleviation of suffering from cancer. But there is something else that those of us in the club can do." It is perhaps the most important task of being a member of the cancer club. Donaldson explains it by sharing his personal experience. Donaldson, who reports news, became news with his cancer diagnosis. Shortly after, a senator he did not know very well, called and said to Donaldson, "I read that you have melanoma. Let me tell you, six years ago I had a number of melanoma lesions removed and I'm just fine today. You will be too."

Donaldson said that was one of the most important telephone calls he ever received -- one he has never forgotten. When I was in the hospital recovering from cancer surgery, a nurse came into my room and shared her seven-year cancer survivorship story. She was there to let me know there was hope -- that I would be fine. It was the turning point in my recovery, and it is the moment I will never forget. As cancer survivors, we have important work to do. Reaching out to the newly-diagnosed is one of the most important tasks because it brings hope. Hope can be the most powerful healing tool of all.

The writer's name is David, he is battling liver cancer and taking experimental drugs to do so. His blog is straight forward and very informative. I applaud his ability to see things so clearly. He talks about being proud of his ct scans proving his tumors have shrunk considerably. I hope you enjoy his no bologna attitude as much as I have. Keep up the great work David, and keep posting. I love it.