Do The Health Benefits Of Berries Make It Past Your Mouth?

Research has suggested that compounds that give colorful fruits their rich hues, especially berries, promote health and might even prevent cancer. But for the first time, scientists have exposed extracts from numerous berries high in those pigments to human saliva to see just what kinds of health-promoting substances are likely to survive and be produced in the mouth.

It's too early to name the best berry for health promotion based on this initial work, but the researchers have discovered that two families of pigments that provide berries with their colors, called anthocyanins, are more susceptible to degradation in the mouth than are the other four classes of these pigments.

The Ohio State University study also showed that bacteria living in the mouth are responsible for most of the breakdown of these compounds that occurs in saliva. Researchers are investigating whether it's the berry pigments themselves, or instead the products of their degradation, that actually promote health.

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Coffee Drinking May Halve Risk Of Mouth And Throat Cancer

A new study from the US finds people who drink more than 4 cups of caffeinated coffee a day have half the risk of dying from oral/pharyngeal (mouth and throat) cancer as people who drink it either occasionally or not at all. However, the researchers say their findings need to be confirmed by more research, and for now should just be received as good news for coffee drinkers and not be used as a reason to recommend everyone should drink 4 cups of coffee a day.

Lead author Janet Hildebrand and colleagues from the American Cancer Society (ACS) in Atlanta, Georgia, write about their findings in a paper published online first on 9 December in the American Journal of Epidemiology.

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Tumor Growth May Be Slowed Or Halted By Common Food Preservative

Nisin, a common food preservative, may slow or stop squamous cell head and neck cancers, a University of Michigan study found.

What makes this particularly good news is that the Food and Drug Administration and the World Health Organization approved nisin as safe for human consumption decades ago, says Yvonne Kapila, the study's principal investigator and professor at the University of Michigan School of Dentistry.

This means that obtaining FDA approval to test nisin's suggested cancer-fighting properties on patients in a clinical setting won't take as long as a new therapy that hasn't been tried yet on people, she says.

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Half A Billion People Exposed To Direct Carcinogens By Chewing Betel Quid

Chewing betel quid - the fourth most popular psychoactive substance in the world after tobacco, alcohol and caffeine - exposes its 600 million users to substances that act as direct carcinogens in the mouth, scientists are reporting in a new study. It appears in ACS' journal Chemical Research in Toxicology.

Mu-Rong Chao and Chiung-Wen Hu explain that betel quid (BQ) consists of nuts from the arcea tree, sometimes combined with spices, such as cardamom or saffron, and other ingredients. Available in commercial forms, BQ is popular among people in China, India and other Asian countries, and people of Asian heritage living in the U.S. and other countries. Scientists have known for decades that chewing BQ can lead to oral cancer, and showed recently that the substances in BQ could be changed into carcinogens in the body. The authors of this study explored whether there were any substances in the arcea nut that can cause cancer directly, without any need for the body to change or "activate" them.

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