In infants whose mothers smoked during pregnancy, the risk of death was 4 times higher compared to non-smoking mothers. SIDS risk was also increased if mothers continued to smoke after birth. The more mother smoked, the higher was the SIDS prevalence. Father's smoking also increased the risk of SIDS. More: [1]
In infants of alcoholic mothers, the prevalence of SIDS was increased by 7-8-fold, and the risk of death from other causes was 2.3 times higher. More: [1]