Here in North America, clean water is something we most certainly take for granted. We flush it down the toilet and the sink, we throw it out if it is not perfectly fresh. We're afraid of out perfectly clean tap water so we invest in expensive filters or buy our water from the store. And yet so many people out there would do anything for that tap water.

Here's a story from Dr. Gupta, CNN's medical correspondent, about a village in China that gets its water supply from the Hengshui River, which happens to be the river that receives heavy metal and mining deposits. On a scale of 1 to 5, 5 being the most toxic--too toxic to safely touch, let alone ingest--the Hengshui rates a staggering 5. Full of known carcinogens like arsenic, lead, zinc and cadmium, the water is slowly killing the people who rely on it, and they have no choice but depend on this water source -- there are no others.

I can't imagine living in a world where the price you pay for water is your life, where you can't rely on anyone to step in and make sure you have a clean water supply. It's truly heartbreaking.

I've always heard the use of herbs and supplements and alternative therapies can be a potentially dangerous pursuit when combined with cancer treatment. But this may not be entirely true.

Think about this:

Using Chinese herbs alone or in conjunction with chemotherapy may help protect a breast cancer patient's bone marrow and immune system. It may also improve the overall quality of life for women, say researchers at the Chinese Cochrane Centre in Chengdu, China.

It is well known that women receiving chemotherapy for breast cancer experience significant short term side effects such as nausea, vomiting, fatigue, inflammation of the gut lining, decreased numbers of red and white blood cells, and decreased numbers of blood platelets. Those is search of some relief may wish to give Chinese medicinal herbs a try.

Researchers say there is conventional evidence indicating that these medicines are safe and effective. Still, "further trials are needed before the effects of traditional Chinese medicines for people with breast cancer can be evaluated with any real confidence," says one professor involved in this area of study.

The first documented whole-ovary transplants are now on the map -- the United States map.

On February 5, a renowned infertility expert in St. Louis transplanted a whole ovary from one woman into her sister in order to enable the sibling to have children after a battle with ovarian cancer that resulted in early and permanent menopause.

Dr. Sherman Silber, who performed the same type of transplant on twins last month and has previously restored fertility via ovary tissue transplants, believes his success is unmatched. Apparently, surgeons in China have reported similar success but offer few details to support their claim. And due to a lack of published material about the case, it is believed Dr. Silber's ovary transplants may be the world's first scientifically documented cases.

Silber says whole-ovary transplants, that could potentially allow women with cancer to freeze an ovary, undergo treatment, and then have the ovary returned to restore fertility, could also one day help women who don't have cancer but experience natural premature ovarian failure, which leads to early menopause.

While both of Silber's ovary transplant patients are awaiting news about their status of their fertility, Silber awaits the long-term results of his work. Ovarian tissue transplants last a few years, but whole ovary transplants should last for decades, he says.

Secondhand smoke rears its ugly head once again -- this time in the form of study results revealing high levels of secondhand smoke in the workplace can double the risk of lung cancer for non-smokers.

Researchers at the University of Illinois at Chicago looked at results from 22 studies conducted in the United States, Canada, Europe, India, Japan, and China. What they found -- and published in the American Journal of Public Health -- is a lung cancer risk 50 percent higher than normal for non-smokers exposed to smoke on the job for more than 30 years. They also found risk increases with level of exposure.

"We believe that our study provides the strongest evidence to date that smoking in the workplace does present a substantial risk to workers -- and particularly to workers who are working in highly exposed areas such as bar workers or restaurant workers," lead researcher Leslie Stayner said.

Previous evidence for increased lung cancer risk caused by secondhand smoke comes from studies of non-smokers married to smokers.

Secondhand smoke -- also known as passive smoke and environmental tobacco smoke -- is smoke from a cigarette, pipe, or cigar as well as smoke exhaled from the lungs of smokers and inhaled by non-smokers. It can cause cancer, respiratory problems, and asthma in non-smokers and is leading to increased efforts by communities to ban or limit smoking in the workplace.

This week in France, bans begin in offices, stores, schools, and hospitals. Come January 2008, cafes and restaurants must also comply with bans. For now, smoking in these areas is permitted in hermetically sealed rooms without any services.

The kids at St. Jude Children's Research Hospital keep busy getting better. They keep busy making holiday gifts too -- like ornaments and ceramic plates and holiday cards and gift wrap. All of their hand-crafted creations fill the 2006 St. Jude Holiday Hope Gift Book, available now and jam-packed with powerful gifts of hope.

Proceeds from gift purchases -- 84 percent of each sale -- benefit sick children in every community in every country who come to St. Jude for life-saving treatment. Like Caleb, a seven-year-old boy diagnosed in 2004 with leukemia.

Caleb was referred to St. Jude -- where no family is ever turned away because of an inability to pay -- and received treatment for three years. Caleb is now in remission and expresses his feelings through his artwork.

Anna Grace, a five-year-old who was abandoned on a roadside in China when she was one day old, was adopted by an American couple and soon after was diagnosed with a cancerous tumor on her brain stem. After surgery to remove the tumor, Anna Grace was referred to St. Jude for chemotherapy and radiation. Today, Anna Grace is healthy and only returns for check-ups every six months.

St. Jude stories of hope are plentiful. And so are the kid-created holiday gifts offered this season.

Last week I noted that Wal-Mart was pulling nine brands of children's clothing off store shelves in China when it was found the clothes to be contaminated with a cancer-causing dye. I posted it primarily because the Wal-Mart spokesperson in China declined comment when asked if the children's clothing had been exported to the U.S. I felt it a good idea for parents here to be on alert.

Within hours of that post, I was contacted via email by Marshall Manson of Edelman, who handles the online public affairs for Wal-Mart, sharing a statement being made by the Wal-Mart spokesperson here in the U.S. saying Wal-Mart was reasonably sure that the cancer-causing children's clothing could not have been exported from China. Because Wal-Mart was not 100 percent sure that the clothing in question had not made its way to store shelves here in the U.S., I asked Manson to contact me when Wal-Mart had finished its internal assessment of the situation. This morning, Manson emailed again. "I wanted to follow up with you and let you know definitively that none of the children's clothes in question in the story that you originally blogged about were exported to the United States. None." Wal-Mart in China has concluded its investigation into the matter and no clothing contaminated with the cancer-causing dye was shipped to the U.S. There you go, now we know for certain.

And while you might be thinking that I am receiving my information from someone who works on behalf of presenting Wal-Mart in the best possible light -- well yes I am -- but here's my thought about that. Truth never stays hidden forever, and would you want to knowingly mislead a blogger? No, I don't think so. All my gut instinct tells me Manson is being straight-forward and forth-coming with the information he has provided in this matter.

Here's why you should never believe everything you read -- and why you should always ask who is behind the research study. In 1997, an article was published in the Journal of Occupational and Environmental Medicine that claimed chromium-contaminated water was not causing high rates of cancer in China. The study reversed an earlier finding by the same Chinese researchers that linked hexavalent chromium to cancer. Nine years later, the medical journal is planning a retraction of the article. Nine years is a long time for erroneous information to be sitting there as research-based fact. It's not a case of OOPS! this is what we knew then but here is what we know now, and what we know now is different than what we knew then -- no no NO -- it's more potentially sinister than that. You be the judge. I quote from The Wall Street Journal, "The article in the Journal of Occupational and Environmental Medicine was conceived, drafted and edited by consultants for PG&E Corporation. The PG&E consultants submitted the article for publication without letting on they or PG&E were involved."

Why, isn't this the same chromium that contaminated the groundwater of Hinkley, that led to the fearless and determined investigator Erin Brockovich to uncovering a cover-up by PG&E that led to the widely-publicized lawsuit against PG&E during the same period in time, the 1990s, that the above scientific article was published. And just so we are all on the same page of thank goodness for the good guys, it was the Environmental Working Group and The Wall Street Journal who lodged an objection to the published research in the medical journal. 

Hours ago, I told you about Wal-Mart's announcement that it will no longer sell children's clothes found to be contaminated with a cancer-causing chemical. The nine brands of children's clothing were sold in stores in China. I then went on to tell you that the public relation spokesperson for Wal-Mart in China declined to state whether or not the same brands of children's clothing had found their way onto U.S. Wal-Mart store shelves. I pondered aloud in the prediction that the public would be hearing from Wal-Mart here in the U.S. regarding this matter -- sooner rather than later.

Wal-Mart has announced it will no longer sell children's clothing found to be contaminated with a cancer-causing chemical. According to the Beijing News, the stores, located in China, were selling nine different brands of children's clothing that contained a dye that has been identified as a carcinogen and linked to cancer. The public relation spokesperson for Wal-Mart in China declined to state whether or not the same brands of children's clothing had found their way onto U.S. Wal-Mart store shelves. Although I am certain we will soon hear from a Wal-Mart public relation spokesperson here in the U.S. regarding this matter.