August 17, 2026  ·  Weekly Newsletter

Good morning, Reader.

The link between early PFAS exposure and childhood gut inflammation presents a stark contradiction for clinicians: environmental factors, often beyond immediate clinical control, are increasingly driving pediatric disease. We are seeing more evidence of invisible exposures shaping patient futures.

1. **PFAS and IBD Risk**, Early life exposure to per- and polyfluoroalkyl substances, PFAS, correlates with increased risk of childhood intestinal inflammation, including IBD. This means environmental toxicology demands greater attention from paediatricians. 2. **Undiagnosed TB Deaths**, Hundreds of individuals in England died before receiving a tuberculosis diagnosis. The diagnostic gap is real. 3. **Submaximal Strength Gains**, Submaximal resistance training can achieve significant strength gains, challenging the necessity of training to absolute muscle failure. This redefines exercise prescription, particularly for older adults.

This week's evidence cluster shows a pattern of hidden burdens. Whether it is environmental toxins, undiagnosed infectious disease, or the overlooked benefits of moderate exercise, factors not immediately visible in the clinic are shaping patient outcomes. Clinicians must look beyond the obvious.

Consider what you are *not* seeing in your daily practice, and how that might be impacting your patients. I read every reply.

Pediatric Obesity

Childhood intestinal inflammation, encompassing conditions like inflammatory bowel disease (IBD), presents a significant diagnostic and management challenge for paediatricians and gastroenterologists. The aetiology is complex, involving genetic predispositions, immune dysregulation, and environmental factors. Understanding these environmental triggers is critical for prevention and early intervention.