Health

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3-D technology enriches human nerve cells for transplant to brain

Improves potential to help Parkinson’s, other degenerative diseases.

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Human neurons (red) extend neural outgrowths across the 3D scaffold.

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Researchers identify molecule needed for sperm activation

NIH-funded study could inform development of male contraceptives, infertility treatments.

Researchers funded by the National Institutes of Health have discovered the cellular switch that boosts the activity of sperm cells so that they can travel to the egg. The finding may lead to new options for male contraception as well as treatments for infertility resulting from problems with sperm mobility.

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New Dengue Virus Vaccine Shows Promise

Research may also aid in development of Zika virus vaccine, expert suggests.

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Experimental dengue vaccine protects all recipients in virus challenge study

Vaccine developed by NIH and FDA scientists.

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A female Aedes mosquito, which spreads dengue virus

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Obesity Linked to Higher Asthma Risk in Women

Experts don't know why, or if losing weight would improve the airway disease.

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Many With Irregular Heartbeat Missing Out on Stroke-Preventing Treatments

Less than half at highest risk take recommended blood-thinning medication, study finds.

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Repeat C-Section May Have No Long-Term Health Risk for Baby

Scottish study finds no significant differences in learning disabilities, risk for various conditions.

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Want to Keep an Aging Brain Sharp? Try the Stairs

Fitness is key, researchers say, and education can also help.

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Mom's Weight, Blood Sugar Levels May Affect Newborn's Size

Study found women who had more genes for obesity, high blood sugar levels tended to have heavier babies

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UN estimates 12.6 million deaths each year attributable to unhealthy environments

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An estimated 12.6 million deaths each year are attributable to unhealthy environments.