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Science News for October 30, 2001


Early iron deficiency

Researchers are using innovative noninvasive techniques to study the developing central nervous system in early iron deficiency, which affects brain development and behavior. The study aims to understand the ties between the brain and behavior, with potential implications for creating more effective interventions.

Sharp drop in stress hormones may set stage for arthritis, multiple sclerosis after pregnancy

Researchers found that levels of IL-12 and TNF alpha decreased during pregnancy, while cortisol, norepinephrine, and 1,25 hydroxyvitamin D3 increased. After birth, these stress hormones surged, possibly contributing to the resurgence of immune disorders like rheumatoid arthritis and multiple sclerosis.

SourceNIH/Eunice Kennedy Shriver National Institute of Child Health and Human Development·JournalThe Journal of Clinical Endocrinology & Metabolism·DateOct 30, 2001

UCLA scientists discover stress accelerates AIDS progression, undermines anti-HIV drugs' effect

A study of 13 HIV-positive men found that those with high levels of autonomic nervous system activity responded less well to antiretroviral treatment, with some experiencing no immune recovery. Stress accelerates AIDS progression by increasing viral replication and making it harder for the body to fight off the infection.

SourceUniversity of California - Los Angeles·JournalProceedings of the National Academy of Sciences·DateOct 30, 2001