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These studies suggest the DASH diet aids weight loss, improves blood pressure, and enhances cholesterol levels, especially when combined with exercise and caloric restriction.
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The Dietary Approaches to Stop Hypertension (DASH) diet was originally designed to help control blood pressure. However, recent studies have shown that it can also be effective for weight loss and improving various metabolic risk factors .
Multiple studies have demonstrated that the DASH diet can lead to significant weight loss. A systematic review and meta-analysis of randomized controlled trials found that individuals following the DASH diet experienced a significant reduction in body weight (-1.59 kg) and body mass index (BMI) (-0.64 kg/m²) compared to control groups. Another study focusing on overweight and obese women with polycystic ovary syndrome (PCOS) reported a more substantial weight loss of -4.4 kg and a BMI reduction of -1.7 kg/m² over an 8-week period.
In older adults, a calorie-restricted DASH diet not only reduced total body weight by 6.3% but also decreased body fat percentage by 2.5% and absolute fat mass by 4.4 kg over 12 weeks. Importantly, muscle strength was maintained, suggesting that the diet helps preserve muscle mass while reducing fat.
The DASH diet has been shown to improve lipid profiles significantly. Studies have reported reductions in serum triglycerides and very-low-density lipoprotein (VLDL) cholesterol levels. Another study found that combining the DASH diet with exercise and caloric restriction led to lower total cholesterol and triglycerides, as well as improved insulin sensitivity.
While the DASH diet alone has minimal effects on fasting blood glucose and insulin levels, combining it with exercise and caloric restriction can significantly improve insulin sensitivity and lower fasting glucose levels . This combination approach is particularly effective in managing risk factors for type 2 diabetes.
Long-term adherence to the DASH diet can be challenging, but digital interventions have shown promise. A web-based nutrition education program called DASH for Health demonstrated significant weight loss and blood pressure reduction after 12 months. Participants also reported improved dietary habits, such as increased fruit and vegetable intake and reduced consumption of carbonated beverages.
The DASH diet is not only effective but also cost-effective. A study analyzing the cost-effectiveness of diet and exercise interventions found that the DASH diet had an incremental cost-effectiveness ratio (ICER) of AUS$12,000 per disability-adjusted life year (DALY) averted, making it a viable option for reducing the disease burden related to excess body weight.
The DASH diet is a well-rounded approach to weight loss and metabolic health improvement. It has been shown to reduce body weight, improve lipid profiles, and enhance insulin sensitivity, especially when combined with exercise and caloric restriction. Digital interventions can help improve long-term adherence, making the DASH diet a practical and cost-effective option for weight management and overall health improvement.
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