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According to Very Well Health , smoking cigarettes does, in fact, have a negative effect on the digestive tract, especially with regard to Crohns disease

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Finnicum CT, Rahal Z, Hassane M, Treekitkarnmongkol W, Sinjab A, Morris R, et al

In addition, we only adjusted for maternal race/ethnicity without considering that of the infant

Smoking delivers toxic chemicals into the body and may disrupt the endocrine system, which controls hormone synthesis and regulation
