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Science News for July 9, 1999


Heat damage to "photosynthesis engine" in symbiotic algae may be among major causes of coral bleaching

Coral reefs are experiencing extensive bleaching due to gradual warming of ocean temperatures. A new study found that heat damage to symbiotic algae is degrading their ability to convert light into utilizable energy. The damaged algae, including the D1 protein, impair photosynthesis and lead to coral expulsion.

SourceUniversity of Georgia·JournalProceedings of the National Academy of Sciences·DateJul 9, 1999

Well-adjusted moms have healthy births

A new study by researchers at UCLA found that pregnant women with positive psychological resources tend to have healthy-weight infants. The study, which analyzed data from 230 pregnant women, suggests that a woman's ability to adapt to the challenges of pregnancy is crucial to the outcome.

SourceCenter for Advancing Health·JournalHealth Psychology·DateJul 9, 1999

Hope protects bereaved, HIV-positive men

A new study suggests that hope plays a vital role in maintaining the health of HIV-positive men who have lost a loved one to AIDS. The researchers found that optimistic expectations and feelings of control over the disease are associated with a slower rate of progression of HIV-related illness.

SourceCenter for Advancing Health·JournalHealth Psychology·DateJul 9, 1999

Gym class: Ripe for a makeover

A study of 1,504 pairs of parents and children found that enjoyment of physical education classes and family support were key factors in influencing levels of physical activity. The research highlights the need for schools to develop programs that maintain high participation and enjoyment throughout the school career.

SourceCenter for Advancing Health·JournalHealth Psychology·DateJul 9, 1999

Women don't understand own health risks

A new study found that women have limited knowledge of their mortality risks, particularly regarding heart disease and lung cancer. Women aged 55-74 were unaware of the deadliest cancer in this age group, while older women knew less about what kills them than other age groups.

SourceCenter for Advancing Health·JournalHealth Psychology·DateJul 9, 1999