This article [1] says that SIDS is believed to be some kind of glitch in the body's regulation systems, which only occurs at a specific time in development (1-6

This article [1] says that SIDS is believed to be some kind of glitch in the body's regulation systems, which only occurs at a specific time in development (1-6 months), and is triggered by environmental factors like temperature, sleeping on the stomach, or tobacco smoke. Can we get a clue to SIDS mechanism by considering why evolution would let SIDS happen? Maybe something different in the modern vs. evolutionary environment? Perhaps it's a deleterious side effect of some beneficial mutation? Or maybe since infant mortality was so much higher for most of human's evolutionary history, the "signal" of SIDS was lost in the "noise" of high infant mortality due to non-SIDS causes, so there wasn't strong enough selection pressure to overcome whatever entropy barrier's needed to generate and universalize a mutation that would protect against SIDS? [1] https://www.nichd.nih.gov/health/topics/sids/conditioninfo/pages/causes.aspx https://www.nichd.nih.gov/health/topics/sids/conditioninfo/p...