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Science News for January 12, 2004


Even moderate amounts of exercise can prevent weight gain

A recent study found that even moderate amounts of exercise can help prevent weight gain in overweight individuals. The research, published in the Archives of Internal Medicine, suggests that more intense physical activity is necessary for weight maintenance and that a modest amount of exercise can reverse positive caloric imbalances.

SourceJAMA Network·JournalArchives of Internal Medicine·DateJan 12, 2004

PET scans superior in revealing response to treatment for gastrointestinal stromal tumors

A study published in The Journal of Nuclear Medicine found that PET scans are more effective than CT scans in early assessment of patients' responses to imatinib mesylate therapy. The researchers concluded that 18F-FDG PET is an excellent prognostic tool for predicting treatment response in gastrointestinal stromal tumors.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateJan 12, 2004

Farm-raised salmon presents greater health risks

A study by Cornell University found that farm-raised salmon in Europe contained higher levels of organic contaminants than those from North America and South America. The analysis revealed 13 out of 14 organochlorine contaminants were present in farmed salmon, highlighting the need for safer farming practices.

SourceCornell University·JournalScience·DateJan 12, 2004

Modest exercise can prevent weight gain

A randomized controlled trial suggests that modest exercise, such as 30 minutes of daily walking, can not only prevent weight gain but also lead to additional loss of weight and fat. The study found a dose-response effect between the amount of exercise and decreases in measurements of central obesity and total body fat mass.

SourceDuke University Medical Center·JournalArchives of Internal Medicine·DateJan 12, 2004