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By Mike Stobbe The Associated Press

Obesity rising in nations rich and poor, especially in kids

NEW YORK — The global obesity problem now affects 1 in 10 people in the world, it is rising in countries rich and poor, and in many countries it is increasing faster in children than adults, according to a new study.

The researchers estimated more than 107 million children and 603 million adults are obese.

Nearly half of US adults infected with genital HPV

NEW YORK — Health officials say nearly half of U.S. adults have caught HPV, a sexually-transmitted bug that can cause cervical cancer and genital warts.

About 45 per cent of Americans ages 18 to 59 had some form of genital human papillomavirus, according to a report released Thursday that’s the most complete look at how common HPV is among adults.

Birth defects seen in 6 per cent of US pregnancies with Zika

NEW YORK — A U.S. study of Zika-infected pregnancies found that 6 per cent of them ended in birth defects. The rate was nearly twice as high for women infected early in pregnancy.

It’s the first published research on outcomes in the United States, and the authors say the findings echo what’s been reported in Brazil and other countries with Zika outbreaks.

US life expectancy falls, as many kinds of death increase

NEW YORK — A decades-long trend of rising life expectancy in the U.S. could be ending: It declined last year and it is no better than it was four years ago.

In most of the years since World War II, life expectancy in the U.S. has inched up, thanks to medical advances, public health campaigns and better nutrition and education.

Zika-caused birth defect may become clear only after birth

NEW YORK — Researchers say a severe birth defect caused by Zika infection may not be apparent at birth but develop months afterward, further confirmation that the virus can cause unseen damage to developing babies.

The findings come from a study of 13 Brazilian babies whose heads all appeared normal at birth but then grew much more slowly than normal.