Researchers wanted to know which diets work best for people with metabolic syndrome, a cluster of conditions that increase heart disease and diabetes risk. They analyzed data from 20 previous studies involving 1,244 patients, comparing 23 different dietary patterns against standard dietary advice. The analysis looked at how these diets affected body weight, blood sugar, waist size, and cholesterol levels.
The analysis found that diets focused on reducing calories ranked highest for lowering body mass index and improving fasting blood sugar. For reducing waist circumference, eating fewer but larger meals throughout the day (meal frequency modulation) ranked highest. A 'recommended dietary approach' also showed benefits for both blood sugar and waist size compared to control diets.
This type of study, called a network meta-analysis, compares different treatments indirectly rather than testing them head-to-head. The rankings show which approaches might be relatively more effective, but don't tell us exactly how much benefit someone might expect. The original studies didn't report on safety or side effects, and we don't know how well people stuck to these diets over the long term.
For now, this research suggests that both watching calories and adjusting meal timing might be helpful strategies for managing metabolic syndrome. However, the best approach will vary from person to person, and these findings should be discussed with a healthcare provider who knows your individual health needs.
