Many Americans have begun taking folic acid supplements thinking that it can protect against colon cancer and also cut a person's risk of stroke and heart disease.

In the past, animal studies led researchers to believe that folic acid had these beneficial effects. The National Institutes of Heath funded a clinical trial that enrolled more than 1,000 men and women who previously had polyps removed from their colons.

Those in the study were randomly assigned to take daily pills containing either 1 milligram of folic acid or a placebo. The study showed that those who took the folic acid got just as many new colon polyps as those who took the placebo pills.

Robert Sandler, M.D., chief of the division of gastroenterology and hematology, told WebMD, "We are disappointed and surprised that it didn't work. In fact, there was some evidence that folic acid increased cancer risk."

It's May. Summer is upon us. So is the hot sun. What a perfect time for an awareness month.

May is Skin Cancer Awareness Month. So now is the time to learn a thing or two about a disease that is largely preventable, extremely deadly, and almost 100 percent curable when caught early.

Think about this:

Someone dies of melanoma -- the deadliest form of skin cancer -- every 65 minutes. Women ages 20-29 are most at risk, with melanoma ranking as the second most common cancer in this age group. But anyone, regardless of skin color or age, can develop skin cancer.

More than one million Americans will be diagnosed with skin cancer this year -- shocking considering the cause of the disease is no secret: skin cancer is caused mostly by too much sun exposure.

OK, how about some good news?

Former contestant Elliott Yamin was the third runner-up on the most recent season of American Idol. But he comes in first place for 19-year-old fan Amanda Jones whose dream after her diagnosis with leukemia was was to meet Yamin. Her dream came true this weekend when she got the chance to meet Yamin backstage at the "American Idols Live" tour in Richmond, Virgina -- Yamin's hometown.

Jones, from Jonesboro, Arkansas, is such a fan of Yamin's that in May she camped out at Graceland in Memphis just to catch a glimpse of him when the top Idol contestants were visiting the former home of Elvis. Now that she knows Yamin a bit better, Jones feels a real connection with him. "He's my hero. He went through so much in his childhood, struggled through so much, and in the end, he came out on top. That's what I pray and hope I can do," she said.

Yamin, 28, is no stranger to health concerns. He suffers from Type 1 diabetes and is also deaf in one ear -- as a result of repeated childhood ear infections and an ear-drum replacement surgery at the age of 13 that just didn't work out right. Still, he overcame his obstacles and has made a name for himself as a talented singer. Jones wants to overcome her obstacles too. For now, though, she is just happy Yamin helped her forget for a moment that she is a kid with leukemia.

Lori Raimondo set off on a cross country journey in May with the goal of raising $9,490 -- one dollar for every day that her mother battled breast cancer. And just yesterday, she reported that her trek is over, that she is back home in New York City after her amazing adventure in search of hope. I think she found the hope she was looking for because she not only met her goal -- she exceeded it. She raised a grand total of $12,610.90 while traveling 10,334 miles -- and every cent was donated to the Breast Cancer Research Foundation where hope for a cure just got a bit sweeter.

Lori coined her trip the Road for a Cure and what a road it was. She crossed many state borders, met charming and kind and outrageous locals, visited with friends along the way, ate at tucked-away restaurants and slept in quaint places, toured roadside stops, and while accompishing her fundraising chronicled it all through words and photographs that appear on her own personal blog. It's inspiring -- that Lori would give of her time and effort and spirit to help others. All in honor of her mother, who lost her battle with breast cancer, and in support of those currently fighting their own battles. I am truly thankful -- as a breast cancer survivor -- that the research that might one day save my life may be a result of Lori's courage and bravery and hard work and generosity.

Welcome home, Lori. And congratulations on a road well traveled.

Australian singer Kylie Minogue said in a recent interview that she and her family fell to pieces upon hearing her diagnosis of breast cancer this past May. Since that time, she has had surgery and chemotherapy and she currently receives treatment to prevent a recurrence of the disease. And she is now picking up the pieces of her life and is rebounding from the once disbelief that her life would take a detour. Last week, she attended her first public appearance since her illness -- at Elton John's White Tie and Tiara ball -- and she is renaming her Showgirl tour, which was canceled after her cancer battle began. Now the Showgirl Homecoming Tour, Minogue is set to return to performing. Her concert promoter says she will take it slow -- to accommodate her off and on again fatigue -- but she will return with the vigor she is known for. Minogue says she feels like she has a new chance at life now. And she will talk all about it on July 16 when her interview is aired on Britain's Sky News.

In the majority of skin cancer cases, skin cancer develops on a part of the body most exposed to the sun. However, that is not always the case, and dermatologists suggest a regular self examination of your entire body skin surface.

To begin a self examination you will need a full-length mirror; a handheld mirror; and a private well-lit room. The full-length mirror allows you to exam the skin areas easily viewed and the handheld mirror gives you the chance to see skin areas not as easily seen, such as the back, scalp, underarms, genitalia, palms, soles, and areas between the toes and fingers. When you visit the Skin Care Physicians skin cancer self examination webpage, you will find an illustrated step-by-step guide, complete with body positions, to carry out a successful self examination.

The obvious danger signs of skin cancer are changes in the size, color, shape, or texture of birthmarks, blemishes, or moles. More specific, signs that should catch your attention are a sore that never fully heals; a translucent growth with rolled edges; brown or black streak underneath a nail; cluster of slow-growing, shiny pink or red lesions; a waxy-feeling scar; flat or slightly depressed lesion that feels hard to the touch or moles that bleed or itch. Photographs of suspicious looking skin growths and moles are also published on the skin cancer self examination webpage. To me, cancerous moles and lesions look nasty and seem easy to identify.

A final note from the experts, and another reason to perform regular self examinations -- if detected early, skin cancer is highly curable -- and the earlier skin cancer is diagnosed, the less scarring from surgical procedures when removing a cancerous growth.