Does weight and body fat matter in dating?

Female attractiveness ratings of male bodies follow an inverted-U over body fatness: in a single cross-cultural study (China, Lithuania, UK; 283 raters, 15 DXA-scanned male bodies), men with low-to-moderate body fat (~13-14%) and BMI in the ~23-27 range were rated most attractive, with ratings dropping toward overweight/obese levels and somewhat at extreme leanness; the optimal band is close to the BMI predicted to maximize evolutionary fitness. BMI is a secondary cue: in a separate image-based study (Fan et al., Proc. R. Soc. B), waist-to-chest ratio (the inverted-triangle torso, narrow waist/broad chest) explains ~50-54% of variance in male attractiveness (53.6% and 49.6% across rater groups) while BMI adds only ~4.3% additional variance. Net effect: being clearly overweight/obese is a substantial penalty, while being lean-to-athletic in the normal-to-slightly-overweight BMI band (muscle-driven, V-taper torso) is optimal. Note: the body-fat finding rests on one study; the two body-fat citations are the same research, not independent confirmation.

Evidence & sources

• Personality and Individual Differences (2025), Xia et al. — body fatness & male attractiveness, via ZME Science summary

  Confirmed: cross-cultural study (China, Lithuania, UK; 283 participants, 15 DXA-scanned bodies) found inverted-U; men with ~13-14% body fat and BMI 23-27 rated most attractive. NOTE: this is a press summary of the same study as the ScienceDirect citation below, not an independent source.

• Visual perception of male body attractiveness, Proc. R. Soc. B (PMC1634963)

  Confirmed verbatim: WCR accounted for 53.6% and 49.6% of variance in attractiveness ratings; BMI was the second factor for female raters, adding only 4.3% additional variance.

• The relationship between body fatness and physical attractiveness in males, ScienceDirect (Personality and Individual Differences, 2025)

  Real, on-topic article (URL returns 403 to bots but verified live via search): peaked relationship between body fat and attractiveness, optimal BMI 23-27, ~13-14% body fat, shoulder-to-waist ratio ~1.57 at peak. This is the PRIMARY study behind the ZME citation — the precise '23.2-24.8 peak' is not stated by the source; the source gives a 23-27 optimal band.