More on coffee -- a topic of panel discussion at the recent Experimental Biology 2007 meeting in Washington, DC, and subject of nearly 400 studies investigating consumption and cancer risk.

Think about this:

No one claims coffee is the new health food. And non-coffee drinkers are not encouraged to drink the beverage for their health. Yet the beverage is certainly losing some of its negative health image.

But is it enough?

Some say coffee protects against colon, rectal, and liver cancers (diabetes too). These same people recognize it also can increase the risk of leukemia and stomach cancer. Those at risk, like pregnant women and children, should limit their consumption.

Like many connections between cancer and diet, there just isn't enough research to tell a whole story. We can only take what's available and make our own educated decisions about our own individual lives.

What decision will you make about coffee?

Drinking eight ounces of mandarin orange juice a day might have the ability to decrease the risk of developing liver cancer, according to researchers in Japan.

Kyoto Prefectural University of Medicine researchers conducted a small one-year study involving participants with chronic viral hepatitis and found that none of those who drank mandarin orange juice developed liver cancer. In the group that did not drink mandarin orange juice, a small number of participants did go on to develop liver cancer. In the same study, researchers indicated that drinking mandarin orange juice might also have a positive health protective effect for atherosclerosis and insulin resistance.

Interestingly, Japanese researchers followed this inquiry after noticing that residents of a Japanese town noted for its high consumption of mandarin oranges suffered lower rates of liver disease, atherosclerosis and diabetes.

These findings, along with several others showing the health benefits of functional foods, will be presented during a four-day conference Functional Foods and Health, at the 232nd national meeting of the American Chemical Society.

Earlier this month, I shared the results of a study that drinking coffee reduces the risk of a genetic type of breast cancer. Good news for women who enjoy a cup of java -- or two -- or three -- to start the day. I have found more good news about coffee. Did you know that a cup of coffee is the number one source of antioxidants in the U.S. diet? So this could mean that we do not get very much in the way of antioxidants in our diet, or it might be that coffee has antioxidant super powers.

"Americans get more of their antioxidants from coffee than any other dietary source. Nothing else comes close," says study leader Joe Vinson, Ph.D., a chemistry professor at the University of Scranton.

Dr. Vinson explained that, "Although fruits and vegetables are generally promoted as good sources of antioxidants, the new finding is surprising because it represents the first time that coffee has been shown to be the primary source from which most Americans get their antioxidants." Antioxidants protect from the potential damage to cells of free radicals. Past research findings have indicated that coffee provides a certain level of cancer prevention for breast, colon and liver  cancers.

Researchers analyzed the antioxidant content of more than 100 different food items, including vegetables, fruits, nuts, spices, oils and common beverages and the amount of daily consumption. Coffee was number one on the list. According to the National Coffee Association, over 50 percent of Americans drink coffee. With all the constant news concerning what is bad for you, this is better than good news for coffee drinkers.