Reuters Health News Summary

Following is a summary of current health news briefs.

Davos strives to make climate talk more than hot air

DAVOS, Switzerland (Reuters) - Climate change is back on the global agenda, with debate in the corridors at Davos given fresh impetus by U.S. President Barack Obama and U.N. Secretary-General Ban Ki-moon both highlighting it as top priority this week. Yet business leaders are still struggling to find the economic incentives to change current practices.

Swine flu infected 1 in 5, death rate low, study shows

LONDON (Reuters) - At least one in five people worldwide were infected with swine flu during the first year of the 2009-2010 H1N1 pandemic, an international research group said on Friday, but the death rate was just 0.02 percent. The results echo other studies that found children were hit harder by the H1N1 strain, which swept around the world, than they are by regular seasonal flu outbreaks and that people over 65 were less vulnerable.

Car commuters gain more weight

NEW YORK (Reuters Health) - People driving to work every day are packing on more pounds than their colleagues on trains, buses and bikes, according to a new study from Australia. "Even if you are efficiently active during leisure time, if you use a car for commuting daily then that has an impact on weight gain," lead author Takemi Sugiyama of the Baker IDI Heart and Diabetes Institute in Melbourne told Reuters Health.

PepsiCo replacing Gatorade ingredient after online petition 2013-01-25T230247Z_1_BRE90O17E_RTROPTC_0_US-PEPSICO-GATORADE.XM L () -

Arguments in first J&J hip implant trial begin in Los Angeles

Los Angeles (Reuters) - Johnson & Johnson <JNJ.N> was aware of defects when it started selling its now-recalled metal hip implants in 2004, lawyers said on Friday during opening arguments in a personal injury trial against the company. More than 10,000 lawsuits have been filed against J&J after its DePuy unit recalled the all-metal ASR hip implants in 2010 following recognition that they were failing at higher-than-expected rates.

FDA approves three type 2 diabetes pills from Takeda 2013-01-25T232130Z_1_BRE90O17Y_RTROPTC_0_US-TAKEDA-DIABETES.XML () -

High doses of folic acid not tied to cancer risk

NEW YORK (Reuters Health) - According to a new analysis, people taking high doses of the B vitamin folic acid are not at an increased risk of cancer - easing some concern about possible side effects of national fortification programs. The U.S. and Canada have required flour to be fortified with folic acid since 1998, after deficiencies in pregnant women were tied to brain and spinal cord birth defects in their babies.

Pfizer Prevnar vaccine wins approval for ages 6-17 2013-01-25T221148Z_1_BRE90O15L_RTROPTC_0_US-PFIZER-PREVNAR.XML () -

Nearby lightning may be linked to migraines

NEW YORK (Reuters Health) - Weather has long been considered one of many potential migraine triggers, but a new study links lightning, specifically, to the onset of the severe headaches that plague more than 28 million Americans. Based on headache logs and weather data for Ohio and Missouri, researchers found that people were 28 percent more likely to experience a migraine on days when lightning struck within 25 miles of their home.

Insurers tally flu's costs as U.S. epidemic continues

NEW YORK (Reuters) - The bills for the flu - at epidemic levels in the United States this winter - are piling up. The nation's three largest insurers, UnitedHealth Group Inc <UNH.N>, WellPoint Inc <WLP.N>, and Aetna Inc <AET.N>, have paid at least $100 million more than usual this year to cover doctor and hospital visits by people with the flu.