High-Protein, Low-Glycemic Diet for Metabolic Syndrome

(MAPS Trial)

Age: 18+
Sex: Any
Trial Phase: Academic
Sponsor: University of Arkansas, Fayetteville

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial explores how a high-protein, low-glycemic diet, including regular potato consumption, might benefit people with Metabolic Syndrome. Metabolic Syndrome consists of conditions like high blood pressure, high blood sugar, and excess body fat around the waist, which increase the risk of heart disease, stroke, and diabetes. Participants will follow different meal plans for 16 weeks to determine if regular potato consumption can improve their health. Individuals with Metabolic Syndrome who frequently consume high-sugar foods may be well-suited for this study. As an unphased trial, this study provides a unique opportunity to enhance understanding of dietary impacts on Metabolic Syndrome.

Will I have to stop taking my current medications?

The trial excludes participants who are on prescription medications related to heart disease or type 2 diabetes, so you may need to stop these medications to participate.

Is there any evidence suggesting that this trial's treatments are likely to be safe?

Research has shown that including potatoes in a high-protein diet does not harm health markers in people with Metabolic Syndrome. One study found that white potatoes do not negatively affect blood sugar, cholesterol, or blood pressure compared to white rice and even slightly aid in weight management.

Another study examined processed potatoes and found similar results, suggesting that eating potatoes may be safe for those with Metabolic Syndrome. However, some research indicates that replacing potatoes with whole grains might slightly reduce the risk of diabetes.

The effects of high-protein diets can vary. Some people experience benefits, while others notice no change or even negative effects. Overall, eating potatoes as part of a high-protein, low-sugar diet appears to be generally well-tolerated.

In summary, current research suggests that adding potatoes, whether fresh or processed, to a diet like the one being tested should be safe for most people.12345

Why are researchers excited about this trial?

Unlike traditional treatments for metabolic syndrome that often focus on medication and lifestyle changes such as increased exercise and reduced caloric intake, this approach uses a dietary intervention with a higher protein, low-glycemic load diet that includes different forms of potatoes. Researchers are excited because this method may provide an alternative way to manage blood sugar levels and weight through specific dietary choices rather than medication alone. The inclusion of white potatoes and processed potato products in the diet presents a new way to maintain low glycemic impact while potentially improving nutritional satisfaction and adherence to dietary changes. By focusing on the types of carbohydrates consumed, this approach could offer a more sustainable and enjoyable way to manage metabolic syndrome.

What evidence suggests that this trial's treatments could be effective for Metabolic Syndrome?

This trial will compare different versions of a high-protein, low-glycemic diet for individuals with Metabolic Syndrome (MetS). Studies have shown that a diet high in protein and low in foods that quickly raise blood sugar benefits MetS. For example, eating white potatoes instead of white rice did not raise blood sugar levels and even aided in slight weight loss. Other research indicates that diets with slowly digested potatoes can help reduce signs of inflammation. However, some studies suggest that replacing potatoes with whole grains might lower the risk of developing type 2 diabetes by about 8%. Overall, potatoes can be part of a healthy diet for MetS when included in a balanced meal plan that doesn't spike blood sugar. Participants in this trial will follow one of the specific diet plans being tested, which include variations with control carbohydrates, white potatoes, or processed potatoes.34678

Are You a Good Fit for This Trial?

Adults over 18 with Metabolic Syndrome, characterized by a combination of high triglycerides, low HDL cholesterol, high blood pressure, elevated fasting glucose levels or abdominal obesity. Participants should be from Northwest Arkansas and currently eating a diet high in glycemic load. Those on heart disease or diabetes medications, with needle phobia, food allergies or dietary restrictions like vegetarianism are excluded.

Inclusion Criteria

Metabolic Syndrome (characterized by participant having three or more of the following measurements: abdominal obesity, triglyceride level over 150 mg/dl, HDL cholesterol < 40 mg/dl in men and 50 mg/dl in women, systolic blood pressure of 130 mm Hg or diastolic blood pressure of 85 mm Hg, and/or fasting glucose > 100 mg/dL)
People of all races and ethnicities are eligible.
You are currently eating a lot of foods that raise your blood sugar quickly.
See 2 more

Exclusion Criteria

You have specific dietary preferences or restrictions, such as being a vegetarian or vegan.
You have been actively trying to lose weight in the past 3 months.
You are afraid of needles.
See 2 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants consume low- to moderate-glycemic load meals for 16 weeks, with specific dietary interventions based on trial arm

16 weeks

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • Higher protein, low glycemic load diet
Trial Overview The trial is testing the effects of a higher protein, low glycemic load diet that includes potatoes more than four times per week on individuals with Metabolic Syndrome to see if it improves their cardiometabolic health.
How Is the Trial Designed?
3Treatment groups
Experimental Treatment
Active Control
Placebo Group
Group I: Higher Protein, Low Glycemic Load with PotatoesExperimental Treatment1 Intervention
Group II: Higher Protein, Low Glycemic Load with Processed PotatoesActive Control1 Intervention
Group III: Higher Protein, Low Glycemic Load - ControlPlacebo Group1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

University of Arkansas, Fayetteville

Lead Sponsor

Trials
24
Recruited
2,100+

Published Research Related to This Trial

A study of 179 older adults found that those following a lower-glycemic-load diet had significantly lower glycemic loads compared to those on a higher-glycemic-load diet, suggesting dietary patterns can influence metabolic health.
Participants in the lower-glycemic-load group consumed more nutrient-dense carbohydrates like whole grains, fruits, and vegetables, indicating that promoting these foods could help reduce the risk of obesity and chronic diseases.
More favorable dietary patterns are associated with lower glycemic load in older adults.Davis, MS., Miller, CK., Mitchell, DC.[2016]

Citations

The Glycemic Index and Human Health with an Emphasis on ...Consuming lower-GI potato varieties or potato foods with low GL values could have a markedly positive effect on the health outcomes of Americans ...
The Comparative Effects of White Potato and White Rice ...White potatoes did not negatively affect glycemic indices, vascular health, lipids, or blood pressure compared to white rice and modestly improved body ...
Total and specific potato intake and risk of type 2 diabetesIn substitution analyses, replacing three servings weekly of potatoes with whole grains was estimated to lower T2D rates by 8% (95% CI 5% to 11 ...
Potato consumption and risk of cardio-metabolic diseasesFavorable associations with potato intake were also found for the following outcomes: decreased risk of diabetes (1 study); a reduction in 2-h ...
Low-Energy Dense Potato- and Bean-Based Diets Reduce ...This was an 8-week randomized, parallel design, controlled feeding study comparing Potato and Bean diets (50–55% carbohydrate, 30–35% fat, 15–20% protein).
Potatoes Incorporated into a Higher Protein Diet for 16 ...Potatoes Incorporated into a Higher Protein Diet for 16-Weeks Do Not Influence Cardiometabolic Health in Adults with Metabolic Syndrome: A Pilot ...
Potato consumption is associated with total and cause-specific ...Our results revealed no significant effects of potato intake on long-term mortality rates, whereas higher potato consumption was adversely related to ...
Effects of high protein diets on metabolic syndrome ...High protein diets are commonly promoted to manage metabolic syndrome. Results are complex with positive, detrimental and no effects being demonstrated.
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