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Publix GreenWise Market Magazine
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Publix GreenWise Market Magazine - May 2008

True or False?

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True or False?

You don't need sunscreen if you have dark skin. False.
The American Academy of Dermatology recommends that people with dark skin routinely use a broad-spectrum UVA/UVB sunscreen with SPF 15. Having dark skin is no guarantee against getting melanoma, the deadliest form of skin cancer, and excessive sun exposure is the most preventable cause of this type of cancer. Yet many dark-skinned people don't realize that. In one survey of 186 college athletes (Journal of the American Academy of Dermatology, August 2005), the majority didn't use sunscreen regularly, and 11% explained that they thought it wasn't necessary due to their skin type.

Dandruff is usually caused by dry skin. False.
Dandruff has been blamed on dry or oily skin, shampooing too little or too much, eating a poor diet, being under stress or using too many hair products. Some of these factors may make the white flakes worse, but scientists now believe the main culprit is a fungus called malassezia.

The fungus is normally present on most adults' scalps. Sometimes it grows out of control, causing the scalp to become inflamed and resulting in more dead skin cells. These cells can clump together with the oil to create unsightly dandruff flakes. Many over-the-counter dandruff shampoos contain antifungal ingredients, such as zinc pyrithione and ketoconazole, to help get malassezia back under control. According to a study in the Journal of the American Academy of Dermatology (December 2002), daily shampooing with tea tree oil also can be effective against dandruff.

People on weight loss diets usually crave carbs. False.
Food cravings—defined as an intense desire to eat specific foods—are reported by most dieters. But recent research (International Journal of Obesity, June 26, 2007) suggests that the cravings are typically for calories rather than carbohydrates per se. Among the most commonly craved foods are chocolate, chips and french fries. While these foods do contain carbs, they're also high in fat. One thing they all have in common is lots of calories.

The six-month study found that food cravings didn't go away even after several months. People who lost a higher percentage of their body weight still had cravings but just gave in to them less often. Rather than trying to suppress cravings, the researchers suggest it may be better to accept the urges as normal and plan ahead for ways to resist them.

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