Anxiety, Shyness May Be Long-Lasting Traits

FRIDAY, July 4 (HealthDay News) -- The brains of people who suffer from anxiety and severe shyness may respond more strongly to stress and show signs of being anxious even in situations considered safe by others, say researchers at the University of Wisconsin School of Medicine and Public Health.

 Mom's Vitamin D Levels Affect Baby's Dental Health

FRIDAY, July 4 (HealthDay News) -- Babies born to women with low levels of vitamin D during pregnancy may be at increased risk for tooth enamel defects and early childhood tooth decay, a Canadian study finds.

 Gender Plays Role in Kidney Transplant Outcomes

FRIDAY, July 4 (HealthDay News) -- Women who receive kidneys from males have a higher rate of graft failure than other donor-recipient combinations, and gender should be considered when choosing donor matches, a new Swiss study says.

 Health Highlights: July 4, 2008

Here are some of the latest health and medical news developments, compiled by editors of HealthDay:

 Health Tip: Have a Safe Fourth of July

(HealthDay News) -- Food, fun and fireworks are all part of the Fourth of July holiday.

 Health Tip: Trying Pregnancy Again

(HealthDay News) -- Trying to get pregnant again after a miscarriage can be fraught with a host of emotional and physical concerns.

 On Independence Day, Think Fireworks Safety First

FRIDAY, July 4 (HealthDay News) -- Fireworks can be breathtaking spectacles, creating glittering showers of sparks and earth-rumbling booms that thrill people for miles around.