Supplementation Effects of Hibiscus sabdariffa L. Flower Aqueous Extract on Body Composition and Metabolism in Eutrophic and Obese Rats

Obesity is a chronic, multifactorial disease characterized by excess body fat and is a major risk factor for various metabolic disorders. Bioactive compounds from the diet have been recognized for their role in preventing chronic non-communicable diseases and as adjuvants in managing endocrine–metabolic dysfunctions. Hibiscus sabdariffa L. (HSL) is rich in bioactive compounds with antioxidant, antihypertensive, and antihyperlipidemic properties. This study evaluated the effects of HSL flower extract supplementation on body composition, lipid profile, and biochemical parameters in both eutrophic and high-fat diet-induced obese rats. Thirty-two Wistar rats were assigned to four groups: control, control plus HSL extract, high-fat diet, and high-fat diet plus HSL extract. The extract was administered orally at 150 mg kg−1 for thirty days. Dual-energy X-ray absorptiometry revealed that HSL supplementation significantly attenuated fat mass gain (from 98 g to 75 g) and adiposity indices (10.23 to 8.86) in obese rats without altering total body mass. Moreover, the HSL extract improved lipid profiles by reducing LDL cholesterol from 23 to 13 mg dL−1 and exhibited potential hepatoprotective effects linked with decreased ALT (40 to 26.7 U L−1) and total bilirubin (0.12 to 0.07 mg dL−1) levels. Although glucose metabolism parameters had no significant differences, a trend toward improved insulin sensitivity was observed. These results suggest that the aqueous HSL extract may exert cardioprotective, hepatoprotective, and anti-obesity effects, supporting its potential as a complementary therapeutic agent in obesity and related metabolic disorders.