This Week in Pediatrics
Contemporary Pediatrics – Clinical News & Pediatrician Practice Tips
With a multistate cyclosporiasis outbreak underway this summer, pediatric providers should maintain a low threshold to consider Cyclospora cayetanensis in children with protracted or relapsing watery diarrhea. ByTrisha Torga, MD · July 15th 2026 · An adolescent medicine specialis...
Cyclosporiasis in 2026: A clinical update for pediatricians | Contemporary Pediatrics
An active, multistate cyclosporiasis ... data, the agency received reports of 1,645 domestically acquired cyclosporiasis cases among people with illness onset from May 1 through July 13, 2026....
Healthwatch: Pediatricians say now is the time for back-to-school vaccines
Rachel Lucas, Anchor and Health Reporter · Published: July 17, 2026 at 4:00 PMUpdated: July 17, 2026 at 5:28 PM · ROANOKE, Va. – With the back-to-school season approaching, many families have already started preparing their children for the start of a new school year. One importa...
Research of the Day
Iron Deficiency in Infancy and Long-Term Cognitive Outcomes: 10-Year Follow-Up
This prospective cohort followed children with iron deficiency anemia in infancy through age 10, comparing cognitive outcomes to iron-sufficient peers. Despite iron repletion in infancy, children with early anemia showed persistent differences in executive function and spatial memory.
Key findings: (1) Early iron deficiency associated with lower scores on math and reading assessments; (2) Differences in brain structure observed on MRI at age 10; (3) Duration of deficiency correlated with magnitude of effect.
Emphasize prevention through dietary counseling and appropriate screening. Iron-rich complementary foods should be introduced at 6 months. Consider iron supplementation in high-risk populations.
Popular Beliefs
Vaccines cause autism
What the evidence shows: This thoroughly debunked claim originated from a fraudulent 1998 study. Multiple large-scale studies involving millions of children have found no association between vaccines and autism. The original study was retracted and its author lost his medical license. Vaccines are safe and essential.
Shaving makes hair grow back thicker and darker
What the evidence shows: Shaving removes hair at the skin surface, leaving a blunt tip that may feel coarser as it grows out. However, it does not affect hair thickness, color, or growth rate. This is an optical illusion from the blunt vs. tapered hair shaft.
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.
Behaviors
Physical Activity and Academic Achievement: School-Based Intervention Study
This cluster RCT examined whether increasing physical activity during the school day improved academic outcomes in 3,500 elementary students. Schools were randomized to add 30 minutes of daily activity or continue standard curriculum.
Key findings: (1) Intervention students showed 15% improvement in reading scores; (2) Math scores improved 8%; (3) On-task behavior increased and disruptive behavior decreased. Benefits were greatest for students with ADHD symptoms.
Advocate for physical activity in schools—it enhances rather than detracts from learning. Counsel families on the importance of daily active play for cognitive development, not just physical health.
Genetics
Polygenic Risk Scores and ADHD: Clinical Utility Analysis
Large GWAS analysis demonstrates polygenic risk scores for ADHD have limited current clinical utility for diagnosis but may help identify children at risk for severe or persistent symptoms. Environmental factors remain critically important.
Key findings: (1) Polygenic scores explain ~10% of ADHD variance; (2) Higher scores associated with earlier onset and persistence; (3) Not useful as diagnostic test—clinical evaluation remains gold standard.
Genetics is one piece of the ADHD puzzle but doesn't replace clinical assessment. Avoid overinterpreting direct-to-consumer genetic tests. Family history remains the most useful genetic 'test' for ADHD risk.