People who smoke tend to weigh less than non-smokers, and when they quit, they usually gain about 4 kg because their body goes back to how it normally weighs without nicotine.

1

Pro

0

Against

Evidence from Studies

Supporting (1)

1

Community contributions welcome

1

Nicotinic acetylcholine receptor signaling in the hypothalamus: mechanisms related to nicotine's effects on food intake.

Narrative Review

Human

2020 Feb 6

This study says nicotine makes people and animals eat less and weigh less, and when they stop using nicotine, they gain weight—just like the claim says. It explains how nicotine in the brain might be causing this.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Nicotinic acetylcholine receptor signaling in the hypothalamus: mechanisms related to nicotine's effects on food intake.

Score: 1

DOI: 10.1093/ntr/ntz010

Similar Assertions

Even when young rats got nicotine, they didn’t gain more or less weight than rats that got a fake pellet — as long as they all ate the same amount of food.

7

0

75%

Chewing gum with nicotine makes you feel less hungry and more full, so you might not want to eat as much.

53

0

73%

When mice can choose when to get nicotine (like smoking), they don’t eat less or lose weight on normal food — but they do if they’re on junk food, showing nicotine’s effect depends on what and when you eat.

0

71%