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Science News for June 26, 2010


Can too much HDL be harmful to women with type 1 diabetes?

A study found that high HDL levels in women with type 1 diabetes increased the risk of heart disease, while low levels actually decreased risk. The researchers suggest that too much good cholesterol may not always be protective and could even be harmful.

SourceUniversity of Pittsburgh Schools of the Health Sciences·DateJun 26, 2010
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Once-weekly exenatide injection improves blood sugar control more than daily oral sitagliptin or pioglitazone and induces more weight loss (DURATION-2 study)

The DURATION-2 study found that once-weekly exenatide improved HbA1c levels by 1.5% compared to 0.9% for sitagliptin and 1.2% for pioglitazone, with significant weight loss in the exenatide group. The findings suggest that exenatide should be considered as an adjunct to metformin for improving glucose control and weight loss.

SourceThe Lancet_DELETED·JournalThe Lancet·DateJun 26, 2010

Going out on a (redwood tree) limb

Alana Oldham and colleagues found that water stress, due to gravity's effect on the water column, drives leaf anatomy and morphology in redwoods. This reduces photosynthesis in the upper canopy, but increases water-stress tolerance traits below.

SourceBotanical Society of America·JournalAmerican Journal of Botany·DateJun 26, 2010

No heart benefit from omega-3 in women with type 1 diabetes

A study by the University of Pittsburgh Graduate School of Public Health found that consuming higher amounts of omega-3 fatty acids does not lower heart disease risk in women with type 1 diabetes. Men with the same condition had a lower rate of heart disease at higher omega-3 intake levels.

SourceUniversity of Pittsburgh Schools of the Health Sciences·DateJun 26, 2010
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