First-person post: poster with a stated BMI of 18.3 says ChatGPT called their body curvy with natural fullness, which sent them spiralling and planning to fast
In a post to r/offmychest on 12 October 2026, an anonymous poster says they have a BMI of 18.3 but carry weight in their thighs and are self-conscious about them. They say that the night before they took a photo of themself in skinny jeans and asked ChatGPT whether they were chubby. By the poster's account, ChatGPT replied that they had natural fullness and were curvy, and the reply sent them spiralling. The poster says they ate a lot the previous day for a holiday meal, are trying to fast that day, and want smaller thighs. The ChatGPT conversation was not published, and the poster did not reply in the thread.
- AI system
- ChatGPT (reported)
- Occurred
- Oct 2026
- Reported
- 12 October 2026
- Event location
- Unknown
- What the AI did
- Communicated with the person
- Reported harm
- Psychological Distress
- Whose AI use
- Their own AI use
- Setting
- Health
- Evidence
- AI involvement reported · Causal attribution alleged · 1 source
- 3 claims: 3 reported. 4 open questions
- People reported harmed
- 1 person
AI system as recorded: ChatGPT, which by the poster's account was asked, after the poster took a photo in skinny jeans, whether they were chubby, and replied that they had natural fullness and were curvy
What Happened
The question. The poster writes that they have 'a bmi of 18.3 but carry weight in my thighs' and feel that their thighs are all people see. They say they took a photo 'last night' in an outfit with skinny jeans, were self-conscious about their thighs, and 'asked chat if i was chubby'. The title names ChatGPT.
The reply, as the poster reports it. 'chat said i have natural fullness and that i was curvy and it sent me spiralling.' No screenshot or transcript of the conversation was posted.
The effect. The poster says they ate a lot the previous day for a holiday meal but are 'trying to fast' on the day of the post, that they 'need smaller thighs', and that they have to lose weight overall because fat loss cannot be targeted.
Replies. Commenters told the poster that a BMI of 18.3 is low, that thigh shape is often genetic, that fasting would not help, and that the chatbot was not a reliable judge; one said 'curvy' does not mean fat. The poster did not reply. Several comments were removed by moderators and could not be read.
Limits. Single anonymous account without the conversation itself. The poster's age, location and any history of disordered eating are not stated, and nothing after the day of the post is known.
Reported harm
A poster with a stated BMI of 18.3 says ChatGPT described their body as curvy with natural fullness when asked whether they were chubby, and that the reply sent them spiralling and that they were trying to fast the next day (first-person account, uncorroborated).
How Harm Occurred
By the poster's account, ChatGPT answered a self-conscious question about whether the poster was chubby by describing their body as curvy with natural fullness. The poster says that reply sent them spiralling and that they were trying to fast the next day.
Outcome
UnknownNo outcome is reported beyond the poster's statement that they were trying to fast on the day of the post. Commenters urged the poster not to fast and not to rely on the chatbot for body assessments. The poster did not reply.
What remains unknown
- The exact wording of ChatGPT's reply and whether it said anything else, such as advice against weight loss.
- The poster's age, location and any prior history of disordered eating.
- Whether the poster fasted and how they fared after the day of the post.
- The exact date of the conversation: the post of 12 October 2026 places it on the previous night, and the poster's time zone is unknown.
What the evidence supports
AI involvement: reported. The poster reports taking a photo of themself and asking ChatGPT whether they were chubby (the post does not say whether the photo was shared with ChatGPT), and quotes its reply that they had natural fullness and were curvy. The poster connects that reply to the harm: they say it sent them spiralling and that they were trying to fast the next day. The relation recorded is the chatbot's reply to the poster. The conversation itself was not published.
3 claims: 3 reported. What the statuses mean
Reported The poster says they have a BMI of 18.3, are self-conscious about their thighs, and asked ChatGPT, after taking a photo of themself in skinny jeans, whether they were chubby.
Causal attribution. Poster's account; the photo and the conversation were not published.
- reddit.com(opens in new tab) supports · English
'i have a bmi of 18.3 but carry weight in my thighs'; 'i took a photo last night in my outfit'; 'asked chat if i was chubby'
Reported The poster says ChatGPT replied that they had natural fullness and were curvy.
Causal attribution. Poster's paraphrase of the chatbot's reply; no transcript.
- reddit.com(opens in new tab) supports · English
'chat said i have natural fullness and that i was curvy'
Reported The poster says the reply sent them spiralling and that they were trying to fast the day after asking.
Causal attribution. Poster attributes the spiralling to the reply; whether the plan to fast was carried out is not reported.
- reddit.com(opens in new tab) supports · English
'it sent me spiralling'; 'today i am trying to fast'
Sources
1 source inspected. Sources that repeat one account do not corroborate each other.
- Reddit r/offmychest, 12 Oct 2026: i asked chatgpt if i was fat and i regret it(opens in new tab)
s1 · reddit.com · Forum post · English · Inspected · 12 October 2026 · Primary
How the sources were read, and where the events happened
Read in English by the research agent (an AI) on 2026-10-13: full self-text and the thread's 25 comments retrieved through the arctic_shift archive API by post ID (HTTP 200); no translation and no human reviewer. The poster handle is not recorded. Applies to s1.
Event countries: Unknown. Affected-person countries: Unknown. Court countries: Unknown.
The post names no place. It mentions an outfit for a holiday meal, which is not used to locate the poster, and the subreddit implies no country. Unknown after review.
Reviewed for publication 2026-10-13: Published under the public-forum rule as a concrete first-person account of a chatbot's description of the poster's body and the distress and plan to fast that the poster attributes to it, described with attribution and without corroboration. No handle, age or place is recorded.
People described
An anonymous poster (age, gender and location not stated) who reports a BMI of 18.3 and self-consciousness about their thighs
People reported harmed in this case
1 person
1 AI participant · 0 other people harmed
One person: the poster, who used ChatGPT and reports the distress and the plan to fast.
Counted once within this case. The same person may appear in other cases. This count does not establish AI causation.
Cite this case
Compiled per our published methodology: verification statuses, sourcing standards, and corrections process.
APA
NOPE. (2026). First-person post: poster with a stated BMI of 18.3 says ChatGPT called their body curvy with natural fullness, which sent them spiralling and planning to fast. AI incidents. https://nope.net/incidents/2026-chatgpt-called-posters-body-curvy-poster-reports-spiralling-and-plan-to-fast-first-person
BibTeX
@misc{2026_chatgpt_called_posters_body_curvy_poster_reports_spiralling_and_plan_to_fast_first_person,
title = {First-person post: poster with a stated BMI of 18.3 says ChatGPT called their body curvy with natural fullness, which sent them spiralling and planning to fast},
author = {NOPE},
year = {2026},
howpublished = {AI incidents},
url = {https://nope.net/incidents/2026-chatgpt-called-posters-body-curvy-poster-reports-spiralling-and-plan-to-fast-first-person}
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