Inside the Autism Debate: What We Know, What We Don’t
When Michael and Sandra’s son turned three, they began to notice that the quirks they once found endearing — his love of spinning toy trains, his preference for quiet play over noisy groups — were also shaping how he connected with the world. He wasn’t speaking as much as other children his age, didn’t always respond when they called his name, and often found comfort in familiar routines more than in new experiences.
A developmental pediatrician soon confirmed what they had begun to wonder: their toddler was on the autism spectrum. Their experience reflects that of millions of families across the United States. According to the Centers for Disease Control and Prevention, roughly 1 in 36 children are now diagnosed with autism spectrum disorder — also referred to as ASD — a significant increase over the past two decades.
The search for explanations has fueled waves of theories. Vaccines, parental age, environmental toxins, and more recently, prenatal use of acetaminophen (Tylenol) have all been scrutinized. The Tylenol question stems from several observational studies suggesting that prolonged, heavy use of acetaminophen during pregnancy may correlate with a higher risk of developmental differences in children.
Yet, most medical professionals remain unconvinced. Here is what we actually know.
