This Week in Pediatrics
Fluoride in drinking water has no effect on IQ or brain function, long-term study shows
The new research is the first to measure community water fluoridation exposure during childhood and any potential impact on cognition up to age 80.
2026 Pediatric Sepsis Guidelines Update: New Evidence, Stronger Recommendations
“Most children with sepsis and septic shock now survive, which is fabulous, but there’s an increasing recognition that up to 30% to 40% of children who survive after requiring ICU-level treatment will have some long-term health issues,” ...
Reimagining Medicaid to safeguard America’s children | Cornell Chronicle
April 14, 2026 · As states reassess ... end of pandemic-era protections, researchers are advocating for evidence-based health care policy reform and expanded Medicaid coverage for children....
Research of the Day
Bedtime Screen Use and Sleep Quality in School-Age Children: Actigraphy Study
Using wrist actigraphy and sleep diaries, this study objectively measured sleep in 800 children ages 6-12 with varying bedtime screen habits. Screen use within 1 hour of bedtime significantly delayed sleep onset and reduced total sleep time.
Key findings: (1) 30-minute average delay in sleep onset with bedtime screens; (2) 45-minute reduction in total sleep time; (3) Blue light filtering partially but not fully mitigated effects.
Recommend screen-free wind-down periods of 1+ hours before bed. Counsel families on device-free bedrooms. Address screen habits as part of sleep hygiene discussions.
Popular Beliefs
Starve a fever, feed a cold
What the evidence shows: Neither fevers nor colds benefit from restricting food. Both conditions increase metabolic demands, and adequate nutrition supports immune function. Encourage normal eating as tolerated and emphasize hydration with any illness.
Cracking knuckles causes arthritis
What the evidence shows: Studies comparing habitual knuckle-crackers to non-crackers found no increased arthritis risk. The cracking sound is from gas bubble release in synovial fluid. The main consequence may be reduced grip strength and annoyed family members.
The flu shot can give you the flu
What the evidence shows: Flu vaccines contain inactivated virus or viral proteins that cannot cause influenza infection. Some people experience mild side effects (sore arm, low-grade fever) that mimic illness. It takes 2 weeks for protection to develop, so some may get infected before the vaccine works.
Behaviors
Media Multitasking and Attention in Adolescents
This study of 600 high school students examined the relationship between media multitasking (using multiple screens simultaneously) and attention abilities. Heavy media multitaskers showed reduced ability to filter irrelevant information.
Key findings: (1) Heavy multitaskers had 15% more attention lapses in class; (2) Greater difficulty switching between tasks effectively; (3) Sleep quality mediated some of the relationship.
Counsel adolescents (and parents) on single-tasking for homework. Having phone notifications off and single-device focus improves learning efficiency and quality.
Genetics
Familial Hypercholesterolemia Screening in Childhood: Cascade Screening Effectiveness
Cascade screening for familial hypercholesterolemia starting in childhood identifies affected relatives and enables early statin therapy. Children identified through family screening had better outcomes than those diagnosed after cardiac events.
Key findings: (1) Each identified case led to 3 additional diagnoses in relatives; (2) Early statin therapy (age 8+) reduced lifetime cardiovascular risk; (3) Universal lipid screening at ages 9-11 complementary to cascade screening.
Take family history of premature heart disease seriously. Screen children in affected families by age 2. Universal lipid screening should occur at 9-11 years per AAP guidelines.