80 Participants Needed

Dietary Capsaicin for High Blood Pressure

SI
Overseen ByStephen Ives, PhD

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial explores whether dietary capsaicin, the spicy component in chili peppers, can improve heart health by affecting blood pressure and blood vessel function. Researchers are particularly interested in whether these effects differ between men and women. Participants will take either a capsaicin supplement or a placebo that looks similar but lacks capsaicin. The trial seeks generally healthy men and women with high blood pressure who are not affected by severe illness, pregnancy, or a strong sensitivity to spicy foods.

As an unphased trial, this study offers participants the chance to contribute to groundbreaking research on natural ways to enhance heart health.

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 uncontrolled hypertension or are taking immune suppressants, you may be excluded from participating.

Is there any evidence suggesting that dietary capsaicin is likely to be safe for humans?

Research shows that eating spicy foods and chili peppers, which contain capsaicin, is usually safe for most people. Some studies suggest that capsaicin can lower blood pressure in animals and might benefit heart health. However, excessive capsaicin consumption can sometimes cause side effects like sweating, dizziness, or changes in blood pressure. Overall, regular capsaicin use is linked to some health benefits, but maintaining a normal intake level is important to avoid potential risks.12345

Why are researchers excited about this trial?

Most treatments for high blood pressure, like ACE inhibitors or beta-blockers, work by relaxing blood vessels or slowing the heart rate. But dietary capsaicin, derived from Capsicum peppers, offers a unique approach. It's thought to naturally lower blood pressure by enhancing blood flow and supporting heart health through its spicy compound capsaicin. Researchers are excited because this natural ingredient could provide a simple, over-the-counter alternative with potentially fewer side effects than standard medications.

What evidence suggests that dietary capsaicin might be an effective treatment for high blood pressure?

Research suggests that capsaicin, the ingredient that makes chili peppers hot, might help manage high blood pressure. One study found that capsaicin significantly lowered blood pressure in just 16 days. Another study showed that people who eat spicy foods, like chili peppers, had a lower risk of dying from heart problems. However, a review that combined results from several studies found no clear effect of capsaicin on blood pressure. This trial will test the effects of dietary capsaicin on blood pressure, comparing it to a placebo. While previous findings are hopeful, they are mixed, and more research is needed to confirm if capsaicin truly benefits blood pressure.12367

Are You a Good Fit for This Trial?

This trial is for non-smoking men and women over 18 with high blood pressure, but otherwise healthy. It's not for those with heartburn, stomach issues, food allergies, trouble swallowing pills, or a severe sensitivity to spicy foods. People with serious illnesses or uncontrolled hypertension can't join. Women who are pregnant, trying to conceive, breastfeeding or without a period (not due to birth control) are also excluded.

Exclusion Criteria

I have heartburn, hiatal hernia, gastritis, or peptic ulcer disease.
Participants with food allergies
I have trouble swallowing or taking pills.
See 4 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive a 6-week dietary capsaicin intervention to assess its effects on cardiovascular health

6 weeks
Baseline, 24 hours, and 6-week visits

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • Dietary Capsaicin
Trial Overview The study tests if dietary capsaicin affects cardiovascular health differently in men and women by looking at nitric oxide levels and markers like blood pressure and arterial stiffness. Participants will take dietary capsules containing capsaicin.
How Is the Trial Designed?
2Treatment groups
Experimental Treatment
Placebo Group
Group I: Dietary CapsaicinExperimental Treatment1 Intervention
Group II: PlaceboPlacebo Group1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

Skidmore College

Lead Sponsor

Trials
20
Recruited
1,100+

American Heart Association

Collaborator

Trials
352
Recruited
6,196,000+

Published Research Related to This Trial

The Japanese cuisine-based DASH (J-DASH) diet significantly lowered home blood pressure (BP) and reduced BP variability in participants with untreated high-normal BP or stage 1 hypertension over a 6-month study involving 40 participants.
The J-DASH diet was found to be feasible and more effective than usual diets in managing blood pressure, indicating its potential as a dietary intervention for hypertension.
Effects of a Japanese Cuisine-Based Antihypertensive Diet and Fish Oil on Blood Pressure and Its Variability in Participants with Untreated Normal High Blood Pressure or Stage I Hypertension: A Feasibility Randomized Controlled Study.Umemoto, S., Onaka, U., Kawano, R., et al.[2022]
Regular consumption of chili peppers, which contain capsaicin, is associated with a lower risk of cardiovascular disease and potentially longer life, suggesting a beneficial impact on metabolic health.
Despite the association with reduced mortality, dietary capsaicin does not appear to significantly affect blood glucose or lipid levels, indicating that its health benefits may be linked to changes in gut microbiota rather than direct metabolic improvements.
Dietary Capsaicin: A Spicy Way to Improve Cardio-Metabolic Health?Szallasi, A.[2023]
Elevated blood pressure is a significant risk factor for stroke and coronary heart disease, particularly when systolic/diastolic levels exceed 140/90 mmHg, highlighting the importance of managing hypertension.
Recent studies suggest that nutraceuticals and functional foods, such as the DASH diet, garlic, and fish oil, may serve as effective alternative therapies for prehypertensive patients, offering a natural approach to lowering blood pressure.
Anti-hypertensive nutraceuticals and functional foods.Chen, ZY., Peng, C., Jiao, R., et al.[2009]

Citations

Spicy Food and Chili Peppers and Multiple Health OutcomesSpicy food and pepper intake are associated with significant decreases in cardiovascular mortality and cerebrovascular accident deaths in Table 2. ... Furthermore ...
Capsaicin improves hypertension and cardiac hypertrophy ...The results showed that capsaicin significantly reduced blood pressure from the 16th day of infusion onward. At the end of the experimental period, we measured ...
The effect of red pepper/capsaicin on blood pressure and ...Meta-analysis showed no significant effect of red pepper/capsaicin on SBP (0.43 mmHg, 95% CI: −1.15 to 2.01), DBP (−0.45 mmHg, 95% CI: −2.14 to ...
ps 08-15 oral dose of capsaicin increases blood pressure ...Relative to placebo, 30 min after first capsaicin dose systolic BP significantly increased (after 2 hours: +2.8 ± 1.1 mmHg; p=0.02), but not diastolic BP (Fig ...
5.pubmed.ncbi.nlm.nih.govpubmed.ncbi.nlm.nih.gov/34676607/
The effect of red pepper/capsaicin on blood pressure and ...Meta-analysis showed no significant effect of red pepper/capsaicin on SBP (0.43 mmHg, 95% CI: -1.15 to 2.01), DBP (-0.45 mmHg, 95% CI: -2.14 to 1.24), and HR (- ...
High capsaicin levels can harbour health risksHigh intake levels can also cause circulatory problems such as cold sweats, changes in blood pressure and dizziness. However, the available data ...
Capsaicin: The kick from your chilli can have side effectsStudies have linked regular capsaicin consumption to contributing to lowering the risk, or slowing the progression, of conditions including high ...
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