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Science News for May 1, 2004


When plants need ants' help, bigger is better

Research shows that larger ants are better at carrying seeds far from their mother plants, but invasive species like Argentine and fire ants pose a threat to native plant populations. The study found that smaller ants cannot disperse seeds as efficiently, leading to reduced seedling survival.

SourceUniversity of Arizona·JournalEcology·DateMay 1, 2004

Hidden cost of depression in seniors: $9 billion in care from spouses, children

A recent study published in the American Journal of Psychiatry found that moderately depressed seniors require significantly more hours of care than those without symptoms. If caregivers were paid for their work, the annual cost would be approximately $9 billion, highlighting the impact of depression on seniors and their loved ones.

SourceMichigan Medicine - University of Michigan·JournalAmerican Journal of Psychiatry·DateMay 1, 2004

Enhanced counseling eases depression among people caring for a loved one with Alzheimer's disease

A study published in the American Journal of Psychiatry found that enhanced counseling, including individual and family therapy, reduced symptoms of depression among caregivers of loved ones with Alzheimer's disease. After one year, 29.8% of caregivers in the enhanced group showed significant improvement.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalAmerican Journal of Psychiatry·DateMay 1, 2004

May 2004 Ophthalmology journal

This May 2004 Ophthalmology journal issue covers a range of topics including refractive surgery, protective eyewear in the military, and ultraviolet absorption of intraocular lenses. Key findings also include higher risk of multiple falls among elderly women with visual acuity loss and patterns of macular edema in patients with uveitis.

SourceAmerican Academy of Ophthalmology·JournalOphthalmology·DateMay 1, 2004