FRIDAY, Feb. 12 (HealthDay News) -- Black women are 30 percent to 90 percent more likely to be diagnosed with advanced breast cancer than white women, researchers report.

FRIDAY, Feb. 12 (HealthDay News) -- Mexican-Americans are tops in meeting national health goals for physical activity, says a new study that challenges previous research that found whites are the most likely to be physically active.

FRIDAY, Feb. 12 (HealthDay News) -- Jealousy can dampen romance and damage sexual intimacy, especially if it occurs within a marriage, says new research that serves as a caution for couples as Valentine's Day approaches.

FRIDAY, Feb. 12 (HealthDay News) -- Homosexual men appear to have an important role to play in perpetuating the family genes, a new study suggests.

FRIDAY, Feb. 12 (HealthDay News) -- With the H1N1 swine flu pandemic apparently winding down, federal health officials said Friday that about 57 million Americans have suffered through the illness since last April, and the total could range as high as 84 million.

FRIDAY, Feb. 12 (HealthDay News) -- U.S. scientists have discovered another way that improper antibiotic use can lead to the development of dangerous multidrug-resistant bacteria.

FRIDAY, Feb. 12 (HealthDay News) -- While shoulder injuries among boys playing high school baseball are common among pitchers, the same injuries among girl softball players are becoming common in several positions, a new study finds.

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

FRIDAY, Feb. 12 (HealthDay News) -- Looking for someone to celebrate next Valentine's Day with? New research suggests you'll gain extra points with prospective mates if you give of yourself to others in activities like volunteering.

FRIDAY, Feb. 12 (HealthDay News) -- One more study finds that the measles vaccine -- given alone or as part of the measles, mumps and rubella (MMR) vaccine -- does not increase the risk of autism in children.

FRIDAY, Feb. 12 (HealthDay News) -- The Web is filled with products and practices that promise to "detoxify" the body through various means, from extreme diets to spa treatments to sweating.

FRIDAY, Feb. 12 (HealthDay News) -- It takes far less energy to walk heel-first than to walk on the balls of your feet or on your toes, a new study has found.

FRIDAY, Feb. 12 (HealthDay News)-- If competitors at the winter Olympic Games opening in Canada Friday seem more on the ball than their sedentary peers, they probably are. Heightened brain activity enables elite athletes to see and react to their opponents' moves faster than less skilled players, a new study finds.

FRIDAY, Feb. 12 (HealthDay News) -- A report last week that more than half of samples of brand-name canned tuna contained more mercury than deemed safe by the U.S. Environmental Protection Agency (EPA) raised concern among tuna lovers everywhere.

(HealthDay News) -- If your voice gets hoarse when you overuse it or when you have a cold, the Center for Voice at Northwestern University suggests how you can treat a croaky voice or prevent its recurrence:

(HealthDay News) -- Postpartum depression is a mental illness that affects women after pregnancy.