Weight Gain Fetish

Weight gain fetish names arousal at the idea of a body growing larger through gaining, most often lived out as fantasy: fiction, art, and imagined self-transformation rather than a real, ongoing feeding relationship. It shares vocabulary, history, and communities with feederism, which is defined by an active feeder/feedee pairing (one partner feeds, the other eats and gains), but this entry covers the broader and frequently self-directed interest: the gainer identity, in which a person wants to gain weight for their own arousal or satisfaction with or without a feeding partner, and the weight-gain (WG) fiction and art genre, in which characters undergo gradual or fantastical fattening as a story device. This article traces that fantasy-and-identity strand, its documented history, and how it differs from, and overlaps with, feederism proper.

Definition & scope

The distinction is one of emphasis, not a hard boundary. Wikipedia's overview of fat fetishism separates "feedism," a fixation on food, eating, and overfullness built around a feeder's active role, from the gainer, who "enjoy[s] the fantasy or reality of being fed and/or gaining weight themselves": a self-facing want that needs no partner to exist. The same source notes many gainers and feedists describe their interest as a lifestyle or identity rather than a discrete kink. Sitting alongside this is a long-running amateur fiction and art tradition, often just called "WG," in which a character's body swells and softens over a story, read and written mostly for the transformation itself. That tradition sits near body inflation, which imagines cartoonish, often instant swelling, whereas WG fiction typically depicts weight gain as a slower, more plausible bodily change.

Examples

The interest is defined by an imagined change rather than by a fixed body type, which is what separates it from its neighbours.

What the term covers. Reading, writing and commissioning WG stories and transformation art, in which a character softens and expands across a narrative arc; the gainer identity, in which the wanted body is one's own; text role-play of gradual gain; solo gaining pursued without a partner; and "stuffing" fantasy, where the appeal is fullness rather than pounds. In every version the arousal attaches to the direction of travel rather than to a size already arrived at.

What the term does not cover. Feederism is the partnered version, organised around a feeder and a feedee; this entry covers the self-directed and fantasy-only majority that needs no such pairing. Body inflation imagines cartoonish, often instantaneous swelling rather than plausible fattening, and muscle growth runs the same growth theme along a different axis. A belly fetish and a burp fetish attach to a body part or event as it already is, with nothing required to change, and size difference kink turns on the contrast between two partners, neither of whom changes. Attraction to fat partners generally is different again: nothing has to change for it to be satisfied. It is also not an eating disorder, which is a diagnosed condition with its own criteria.

How the word is used. The vocabulary is entirely community-made: WG for the fiction genre, gainer for the person gaining, encourager for the partner who supports it, feedism for the partnered form. None of it is clinical, and neither the interest nor its terms appear in DSM-5-TR or ICD-11; sexology reaches the territory only through the broader heading of fat fetishism. "He writes WG fiction but has never wanted to gain himself" is an unremarkable sentence in these communities, because fantasy and practice come apart so often.

History & origins

Gainer culture

The self-identified gainer scene traces to the gay Girth & Mirth social movement of the 1970s, per Wikipedia. Gainer-specific newsletters circulated by 1988, giving the dispersed interest shared vocabulary. EncourageCon, an early in-person gathering, was held in New Hope, Pennsylvania in 1992, and GainRWeb, the first website dedicated to gay men interested in weight gain, launched in 1996.

The WG fiction tradition

A parallel, more text-and-art-driven thread grew directly online. Long-running contributor accounts, such as "Lessons Learned: 25 Years of Weight-Gain Fiction", place the genre's start in the mid-1990s, when feeder.com hosted an FTP archive of over a hundred weight-gain stories. The scene moved through Dimensions Magazine, then to DeviantArt after its 2000 launch, and now includes Patreon-supported serial writers. Participants in this account are explicit that the appeal is the fiction of transformation (magical fattening, slow-burn indulgence, narrative arcs of change) rather than a documented record of real feeder/feedee relationships.

Mapping fantasy against practice

Alyshia Bestard's 2008 University of Waterloo thesis, Feederism: An Exploratory Study into the Stigma of Erotic Weight Gain, proposed a continuum running from fantasy (reading and viewing WG material, with no real gaining involved) through encouraging and feeding to, rarely, gaining toward immobility. Bestard placed most participants at the fantasy end, which is exactly the territory this entry describes. A 2011 case report by Lesley Terry and Paul Vasey, "Feederism in a Woman" in Archives of Sexual Behavior (40(3):639–645), left open whether this kind of weight-gain arousal is a distinct paraphilia or a thematic variant of morphophilia (attraction to a class of body forms) or masochism. Weight-gain fetish does not appear as its own entry in the DSM-5-TR or ICD-11, nor on Wikipedia's list of paraphilias, consistent with its status as an undiagnosed, consensual interest rather than a recognized disorder.

In practice

Most engagement is fantasy: reading and writing WG stories, commissioning or drawing transformation art, imagining one's own body changing, or role-playing gradual gain in text. A smaller subset pursues real gaining, alone or with a partner, sometimes under the same "gainer" label used for the fantasy-only majority. The self-directed framing distinguishes it from feederism's core feeder/feedee ritual, though the two overlap heavily in practice and community spaces, and many participants move between fantasy-only and lived versions of the interest over time.

Psychology

The themes echo feederism's: indulgence, abundance, softness, and the eroticization of size and change, but centered on one's own body and identity rather than a partner's care. This self-facing quality places weight-gain fantasy near the broader family of body-transformation interests gathered in this catalog's Identity & Transformation category, alongside identities like therianthropy that also turn on imagining one's own body or self differently, though weight-gain fantasy has not itself been formally studied as an erotic target identity inversion. The evidence base is thin: case reports, community accounts, and a single graduate thesis, not controlled research, so causal claims should be treated cautiously.

Prevalence & culture

No population survey isolates weight-gain fantasy from feederism generally, so figures rely on community-size proxies. FetLife hosts active gainer and WG-themed groups, and the fiction and art side has sustained itself across FTP archives, Dimensions, DeviantArt, and Patreon for three decades, evidence of a durable if niche audience. Mainstream visibility is low and largely limited to occasional, often sensational media coverage of the wider fat-fetish world.

Safety, consent & law

The fantasy-only form carries no physical risk. Where gaining is pursued for real, the same health considerations documented for feederism apply: substantial weight gain can carry cardiovascular, metabolic, and mobility risks, so responsible practice rests on informed, revocable consent and honesty about health, whether or not a partner is involved. Because the identity can feel deeply personal, some participants also describe psychological strain from stigma or from pressure to gain beyond what they freely want; ethical community norms treat autonomy over one's own body as central. The interest, fantasy or acted upon, is legal between consenting adults.