is it nicotine that speeds up your metablism and curbs your appetite or ciggerrettes??

Answer 1

Those effects are primarily attributed to nicotine, which acts mainly as an adrenergic stimulant in the human body, increasing metabolism and suppressing appetite, as you mentioned.

Answer 2

It's the nicotine. But if you're thinking about starting using patches or gum for weight loss, please reconsider. You still get the bad effects of nicotine (possible addiction, cancer-causing effects) and it's not a good solution. Get prescription diet pills instead if you need them, and use them only under the supervision of your doctor (they'll usually prescribe them for a couple weeks to get you "jump started" toward your goals). The best thing of all for weight loss is an attitude change toward food, which is a topic too broad to sum up in a few sentences.

Answer 3

well, nicotine is one of the stuff that you breathe in when you smoke a cigarette.

therefore, smoking a cigarette causes nicotine to be inhaled, which speeds up your metabolism and makes your appetite decline because it is a stimulant.

cigarette -> inhale nicotine -> the effects you mentioned