igh ▁less ▁than ▁n ons m ok ers , ▁and ▁gain ▁less ▁weight ▁over ▁time . ▁Con vers ely , ▁certain ▁longitud inal ▁studies ▁have ▁not ▁shown ▁correlation ▁between ▁weight ▁loss ▁and ▁sm oking ▁at ▁least ▁among ▁young ▁persons . ▁According ly , ▁while ▁the ▁connection ▁between ▁nic ot ine ▁and ▁app et ite ▁supp ression , ▁as ▁well ▁as ▁other ▁phys i ological ▁responses ▁to ▁nic ot ine ▁consumption , ▁has ▁been ▁established , ▁whether ▁these ▁chemical ▁and ▁bi ological ▁re actions ▁translate ▁to ▁sm ok ers ▁being ▁th inner ▁than ▁n ons m ok ers ▁( at ▁least ▁concerning ▁certain ▁age ▁groups ), ▁is ▁still ▁deb ated . ▁Age ▁may ▁act ▁as ▁a ▁comp ounding ▁factor ▁in ▁some ▁of ▁these ▁studies . ▁Ess entially , ▁a ▁caus al ▁relationship ▁has ▁not ▁been ▁explicitly ▁established ▁between ▁phys i ological ▁effects ▁of ▁nic ot ine ▁and ▁ep ide mi ological ▁find ings ▁about ▁weight ▁among ▁sm ok ers ▁and ▁n ons m ok ers . ▁ ▁Per ception s ▁of ▁weight ▁control ▁among ▁ad oles c ents ▁While ▁most ▁adult s ▁do ▁not ▁smoke ▁for ▁weight ▁control , ▁studies ▁have ▁shown ▁that ▁associations ▁between ▁to b acco ▁use , ▁being ▁thin ▁and ▁desire ▁for ▁weight ▁control ▁do ▁influence ▁ad oles c ents ▁in ▁terms ▁of ▁sm oking ▁behavior . ▁Research ▁demonstr ates ▁that ▁ad oles cent ▁girls ▁that ▁strongly ▁value ▁being ▁thin ▁are ▁more ▁likely ▁to ▁initi ate ▁sm oking . ▁Additionally , ▁girls ▁already ▁engaged ▁in ▁ris ky ▁behavior ▁for ▁weight ▁control