Below you can find the Found in cigarettes it affects the efficiency of the placenta & may lead to low birth weight Jeopardy Words Answer. The answer to Found in cigarettes it affects the efficiency of the placenta & may lead to low birth weight has 8 letters. This clue belongs to the Pregnancy & childbirth category and is part of Jeopardy Word Level 1383. If you scroll near the bottom you will find other clues and answers part of level 1383