WILMINGTON, Delaware, April 6 (TNSres) -- Nemours Children's Health System issued the following news release on April 5, 2023: More than one in three children ages 9 to 13 (37%) worry at least once a week, primarily about school (64%) and friendships (41%), with their tendency to worry progressing with age. Older children (age 13) are more likely than their younger counterparts to report feeling as though they will never stop worrying (48% vs. 22% for 9-year-olds). This is according to the resu  more