Intragastric royal jelly (100 mg/kg body weight/d/8 weeks)  10-months old male Sprague-Dawley on HFD as a rat model of sarcopenic obesity  EG1: aged rats on royal jelly and HFDEG2: aged rats on royal jellyCG1: untreated young ratsCG2: untreated aged ratsCG3: untreated old rats on HFD  Serum levels of T-CHO, TG, HDL-c, LDL-c, insulin, HOMA-IR. Skeletal muscle TG levels. Serum and adipose tissue levels of TNFR1. Percentage of weight gain of the body, abdominal fat, and tibialis anterior and hind limb muscles.  Royal jelly significantly decreased insulin levels, HOMA-IR, TNFR1 in serum and adipose tissue, serum lipids, muscle TG levels, body weight gain and abdominal fat weight and significantly increased the weight of hind limb muscle in aged rats on HFD compared with aged mice on HFD only.  [100]