Weight gain as a kink involves erotic or emotional interest in the process, fantasy, or aesthetic of a person gaining body mass. This can take many forms: one partner may enjoy being the person gaining weight (sometimes called a 'gainer'), while another may find pleasure in encouraging or facilitating that gain (sometimes called an 'encourager' or 'feeder'). The appeal can center on body transformation, nurturing dynamics, themes of abundance and indulgence, or a sense of care and control that mirrors elements found in age play or pet play contexts. Within those frameworks, weight gain may represent being pampered, cared for, or kept, reinforcing dependency or caretaking roles between partners. The kink exists on a spectrum from purely fantasy-based (roleplaying scenarios without any real physical change) to lifestyle-oriented (where actual dietary changes are part of the dynamic). Both approaches are valid. Like all kinks, participation is defined by the preferences and boundaries of the individuals involved, not by any single template.
Open negotiation is essential, particularly because this kink can intersect with body image, eating habits, and physical health. Partners should distinguish clearly between fantasy roleplay and any real dietary or lifestyle changes. If real weight gain is part of the dynamic, both parties should check in regularly about physical and emotional wellbeing, as body changes can affect self-esteem and health in ways that shift over time. Watch for signs that encouragement crosses into pressure. Establish clear, revisable limits and use a safeword or check-in system.
Reviewed by Reviewed by the Jar of Kinks editorial team