Research Report: UCSD study gives insights on anorexia nervosa

Researchers at the Eating Disorders Program at UCSD, using new imaging technology, report evidence of dysfunction in certain neural circuits of the brain which may help explain why some people develop the eating disorder anorexia nervosa.

Imaging studies suggest that individuals with anorexia have an imbalance between circuits in the brain that regulate reward and emotion and the circuits associated with consequences and planning ahead.

Researchers anticipate that understanding the underlying neurobiology of how behavior is coded in the brain and contributes to anorexia will lead to more effective treatments. The findings appear online in Nature Reviews Neuroscience.

Invasive wasps display new life cycles
A new study by ecologists from UCSD on invasive yellowjacket wasps on two Hawaiian islands has revealed both how the wasps have altered native insect and spider populations and how the environment itself has altered yellowjacket behavior and life cycle in ways that magnify its ecological harm.

In their native range, Western yellowjackets typically form nests in the spring that become dormant before winter. In Hawaii’s mild climate, however, up to 20 percent of colonies persist for years, grow to enormous sizes, and have become major pests. UCSD researchers conducting the study documented one Maui colony with upwards of 600,000 individuals, compared to the usual size of a few thousand wasps.

Scientists also found that introduced yellowjacket wasps kill or scavenge prey from 14 different taxonomic orders of animals, including reptiles and birds.

On a positive note, nearby populations of caterpillars and spiders rebounded when wasp nests were removed. The study appears in the Proceedings of the National Academy of Sciences.

Related posts:

  1. Research Report: Salk Institute receives grant for aging research
  2. Research Report: HIV protein shell structure revealed
  3. Research Report: Discovery sheds light on mysterious glow of sea
  4. Research Roundup: UCSD to lead PTSD, brain injury study
  5. Research Report: Study: Termite gas lingers in atmosphere

Short URL:

Posted by marylajolla on Jul 30, 2009. Filed under Archives. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

Leave a Reply



Bottom Buttons 1

Bottom Buttons 2

Bottom Buttons 3

Bottom Buttons 4

Bottom Buttons 5

Bottom Buttons 6



  • Look how you’ve grown! La Jolla Secret Garden tour celebrates 16 years
    The upcoming Secret Garden Tour of La Jolla, a fundraiser for the La Jolla Historical Society, has come a long way from its first venture in 1999. Event co-founder Linda Marrone said, over time, the committee came up with ways to change and improve the tour, creating the “successful” event it is today. […]
  • La Jolla Community Calendar April 17-24
    Bird Rock Elementary will hold new student registration for the 2014-2105 school year, 1:30-3:30 p.m. Wednesday, April 23 in the Bird Rock Elementary auditorium, 5371 La Jolla Hermosa Ave. An enrollment packet can be picked up in the office in advance to be completed before the registration date. (858) 488-0537. […]
  • Thanks for the non-memories
    When I considered whether to go to my 40th high school reunion — my first reunion ever — the first thing I thought about was whether I’d have to confront my high school nemesis, Medusa (not her real name). […]