Listen as Dr. Berger explains the association between soda and acne.

NEW YORK - Customers at big fast-food chains in New York City are finally facing the facts about their meal choices. And for some, the truth may be hard to swallow — like 1,130 calories for a Big Mac, medium fries and a medium soda.

After months of resistance, the city's chain restaurants have begun obeying a first-of-its-kind rule requiring them to post calorie counts right on the menu.

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WEDNESDAY, March 12 (HealthDay News) -- Dental erosion -- the loss of the teeth's protective enamel -- is on the increase in the United States, researchers say.

"This study is important, because it confirms our suspicions of the high prevalence of dental erosion in this country and, more importantly, brings awareness to dental practitioners and patients of its prevalence, causes, prevention and treatment," study co-author Bennett T. Amaechi, an associate professor of community dentistry at the University of Texas Health Science Center at San Antonio, said in a prepared statement.

WEDNESDAY, Feb. 20 (HealthDay News) -- Reducing children's salt intake may lower their consumption of sugar-sweetened soft drinks and reduce their risk of obesity, high blood pressure and other health problems later in life, British researchers say.

Scientists at St. George's University of London analyzed data on more than 1,600 boys and girls, aged 4 to 18, in Great Britain, and found that those who ate a lower-salt diet drank less fluid. The researchers estimated that cutting 1 gram of salt from a child's daily diet would reduce the child's overall fluid intake by 100 grams per day.