20 Participants Needed

High Saturated Fat Diet for Peripheral Vascular Disease

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Overseen ByShona Hang, MSPH
Age: 18 - 65
Sex: Any
Trial Phase: Academic
Sponsor: Medical College of Wisconsin
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

Trial Summary

What is the purpose of this trial?

The goal of this clinical trial is to determine the effect of elevated plasma ceramides on peripheral vascular function. Subjects will consume a high fat meal consisting of long chain fatty acids (to increase plasma ceramides) or medium chain fatty acids (control). Subjects' vascular function will be assessed with laser Doppler flowmetry to measure their artery function and with the CytoCam device to assess their peripheral microvascular endothelial function.

Will I have to stop taking my current medications?

The trial information does not specify whether you need to stop taking your current medications. However, if you have conditions like high blood pressure, high cholesterol, or heart disease, you may not be eligible to participate.

Is a high saturated fat diet safe for humans?

Research suggests that high intake of saturated fats is linked to an increased risk of heart disease and other health issues. Studies recommend replacing saturated fats with healthier unsaturated fats to lower the risk of cardiovascular disease.12345

How does a high saturated fat diet treatment differ from other treatments for peripheral vascular disease?

A high saturated fat diet treatment is unique because it focuses on dietary intake rather than medication or lifestyle changes, which are common in managing peripheral vascular disease. This approach contrasts with other treatments that often emphasize reducing saturated fat and cholesterol intake to lower disease risk.678910

Eligibility Criteria

This trial is for healthy, English-speaking adults aged 18-40 who are not pregnant. It's not suitable for those with blood pressure or heart rate outside of normal ranges, current tobacco users, lactose intolerant individuals, anyone with open mouth sores or wounds, diabetes patients, people with coronary artery disease or high cholesterol, recent chemotherapy patients, and non-English speakers.

Inclusion Criteria

Not pregnant
I am a healthy adult between 18 and 40 years old.
I speak English.

Exclusion Criteria

I am under 18 or over 40 years old and healthy.
Pregnant individuals
I have heart failure.
See 11 more

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants consume a high fat meal consisting of long chain or medium chain fatty acids to assess vascular function

1 day
1 visit (in-person)

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

Treatment Details

Interventions

  • High Saturated Fat
Trial OverviewThe study aims to see how a high fat meal affects the peripheral vascular function in participants. They will eat meals rich in long chain fatty acids (which may increase plasma ceramides) versus medium chain fatty acids (control). Their artery function and microvascular endothelial function will be measured using laser Doppler flowmetry and the CytoCam device.
Participant Groups
2Treatment groups
Experimental Treatment
Active Control
Group I: Long Chain Fatty Acid High Fat MealExperimental Treatment1 Intervention
This arm will assess the effect of increased plasma ceramide on peripheral microvascular function after consuming a long chain fatty acid high fat meal.
Group II: Medium Chain Fatty Acid High Fat MealActive Control1 Intervention
This arm will assess the effect of increased plasma ceramide on peripheral microvascular function after consuming a medium chain fatty acid high fat meal.

Find a Clinic Near You

Who Is Running the Clinical Trial?

Medical College of Wisconsin

Lead Sponsor

Trials
645
Recruited
1,180,000+

Findings from Research

In a study of 3,259 patients undergoing coronary angiography, higher levels of palmitic acid (a type of saturated fatty acid) in red blood cells were linked to an increased risk of total and cardiovascular mortality over a median follow-up of 9.9 years.
Other saturated fatty acids did not show any significant association with mortality, highlighting the importance of evaluating individual fatty acids rather than treating them as a group when assessing health risks.
Saturated fatty acids and mortality in patients referred for coronary angiography-The Ludwigshafen Risk and Cardiovascular Health study.Kleber, ME., Delgado, GE., Dawczynski, C., et al.[2019]
Reducing dietary saturated fat and replacing it with polyunsaturated fats can lower the risk of cardiovascular disease (CVD) by approximately 30%, similar to the effects of statin medications, based on randomized controlled trials.
Replacing saturated fats with refined carbohydrates does not reduce CVD risk, highlighting the importance of choosing healthier fat sources, such as unsaturated fats, as part of a balanced diet like the DASH or Mediterranean diet.
Dietary Fats and Cardiovascular Disease: A Presidential Advisory From the American Heart Association.Sacks, FM., Lichtenstein, AH., Wu, JHY., et al.[2022]
Saturated fat intake does not show a significant association with all-cause mortality, cardiovascular disease (CVD), coronary heart disease (CHD), ischemic stroke, or type 2 diabetes, based on a systematic review of studies involving up to 339,090 participants.
In contrast, trans fat intake is linked to increased risks of all-cause mortality, CHD mortality, and total CHD, particularly due to higher levels of industrial trans fats, indicating a need for careful dietary guidelines regarding these fats.
Intake of saturated and trans unsaturated fatty acids and risk of all cause mortality, cardiovascular disease, and type 2 diabetes: systematic review and meta-analysis of observational studies.de Souza, RJ., Mente, A., Maroleanu, A., et al.[2022]

References

Saturated fatty acids and mortality in patients referred for coronary angiography-The Ludwigshafen Risk and Cardiovascular Health study. [2019]
Dietary Fats and Cardiovascular Disease: A Presidential Advisory From the American Heart Association. [2022]
Intake of saturated and trans unsaturated fatty acids and risk of all cause mortality, cardiovascular disease, and type 2 diabetes: systematic review and meta-analysis of observational studies. [2022]
Dietary prevention of coronary heart disease. Effect of dietary fats on arterial thrombosis. [2019]
Saturated Fats and Cardiovascular Disease: Interpretations Not as Simple as They Once Were. [2019]
Diet and peripheral arterial occlusive disease: the role of poly-, mono-, and saturated fatty acids. [2019]
Dietary patterns, plasma vitamins and Trans fatty acids are associated with peripheral artery disease. [2022]
Intake of marine n-3 polyunsaturated fatty acids and the risk of incident peripheral artery disease. [2023]
Dietary intake of participants with peripheral artery disease and claudication. [2021]
Effects of lifestyle modification and lipid intake variations on patients with peripheral vascular disease. [2019]