| کلمات کلیدی | Keywords: Dark chocolate, lipid profile, obesity, systematic review, cocoa, HDL, LDL, triglycerides, body mass index, waist circumference. |
| خلاصه مقاله | Background: Dark chocolate, particularly varieties with high cocoa content, has been suggested to offer health benefits due to its rich polyphenol content. Previous studies have indicated potential positive effects of dark chocolate on lipid profiles and obesity-related parameters, but results remain inconsistent. This systematic review aims to assess the impact of dark chocolate consumption on lipid profiles (e.g., total cholesterol, HDL, LDL, triglycerides) and obesity parameters (e.g., body mass index, waist circumference, fat mass) in both healthy and overweight/obese individuals.
Methods: A comprehensive search was conducted across PubMed, Scopus, and Web of Science for studies published between 2000 and 2024. Randomized controlled trials, cohort studies, and clinical trials assessing the effects of dark chocolate intake (≥70% cocoa) on lipid profiles and obesity parameters were included. Data on sample size, study duration, chocolate dose, and outcome measures were extracted and analyzed.
Results: Out of 380 studies identified, 17 studies met the inclusion criteria. Pooled data analysis revealed that dark chocolate consumption significantly improved lipid profiles, specifically by increasing HDL cholesterol levels and reducing total cholesterol and triglycerides. The effects were more pronounced with higher cocoa content and longer consumption periods. In terms of obesity parameters, moderate dark chocolate intake was associated with a reduction in waist circumference and fat mass in overweight and obese individuals, although the effect on body mass index (BMI) was less consistent. Importantly, no significant changes were observed in appetite regulation, indicating that the observed benefits were likely related to improved lipid metabolism rather than changes in energy intake.
Conclusion: Dark chocolate, particularly with high cocoa content, appears to offer beneficial effects on lipid profiles and certain obesity-related parameters. While these findings support its potential as a functional food for cardiovascular and metabolic health, more research is needed to determine the long-term effects and optimal dosage for achieving these benefits. Future studies should focus on standardizing the type of chocolate, dosage, and duration of intervention to confirm these findings. |