Part two of three-part series

WEDNESDAY, Sept. 8 (HealthDay News) -- Elderly men are more likely to suffer memory problems than women, new research shows.

(HealthDay News) -- Teaching children to take precautions while waiting for, entering and exiting a school bus can help keep them safe.

(HealthDay News) -- Baby formula is designed for infants a year old or younger who aren't breast-fed.

WEDNESDAY, Sept. 8 (HealthDay News) -- Many parents experience depression during the first 12 years of their children's lives and the risk is highest during the first year after birth, a new study has found.

WEDNESDAY, Sept. 8 (HealthDay News) -- Repeat impaired-driving offenders have subtle deficits in their decision-making abilities that may not be detected through conventional tests, says a new study.

WEDNESDAY, Sept. 8 (HealthDay News) -- HIV-infected children who undergo highly active antiretroviral therapy (HAART) may need to be revaccinated to maintain their immunity against preventable childhood diseases, researchers from Johns Hopkins have found.

WEDNESDAY, Sept. 8 (HealthDay News) -- Three factors linked to cognitive deficits in older adults with type 2 diabetes have been identified in a new study.

WEDNESDAY, Sept. 8 (HealthDay News) -- Minimally invasive arthroscopic surgery to repair torn shoulder muscles in elderly people can reduce pain and improve function, a new study finds.

WEDNESDAY, Sept. 8 (HealthDay News) -- Many heart patients harbor the misguided notion that angioplasty, a common procedure to open clogged arteries, will also cut their risk of heart attacks and death, a new study shows.

WEDNESDAY, Sept. 8 (HealthDay News) -- More Americans are visiting hospital emergency departments because of abdominal pain, but the percentage of emergency visits that involve chest pain are decreasing, a new government report shows.

WEDNESDAY, Sept. 8 (HealthDay News) -- Statins, lauded for their ability to lower cholesterol and prevent heart attacks and strokes, may also reduce the risk of developing rheumatoid arthritis, Israeli researchers report.

WEDNESDAY, Sept. 8 (HealthDay News) -- The exact cause of type 1 diabetes is still unknown, but international researchers have found a link between the blood sugar disorder and a network of immune system genes.

WEDNESDAY, Sept. 8 (HealthDay News) -- Out-of-shape men who work long hours more than double their risk of dying from heart disease compared to non-fit men working fewer hours, researchers report.

WEDNESDAY, Sept. 8 (HealthDay News) -- Mutations in two genes may be associated with one of the most deadly types of ovarian cancer, U.S. researchers have found.

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

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

WEDNESDAY, Sept. 8 (HealthDay News) -- A group representing America's pediatricians is urging that flu shots be mandatory for all U.S. health-care workers in order to protect patients.

WEDNESDAY, Sept. 8 (HealthDay News) -- A 15-year-old Swiss boy attempted to create his own laser show using a laser pointer he bought on the Internet and a mirror. Instead, he inadvertently beamed the laser into his eyes, creating permanent damage to his vision.