Hawthorn berries (Crataegus spp.) have been a part of traditional healing for centuries, with a long-standing reputation for having a positive impact on heart and circulation function.
In recent times, scientific studies are proving long-standing claims, with studies finding that Hawthorn extract can actually lower blood pressure and enhance cardiovascular function. Let’s review the scientific studies that detail the use of Hawthorn berries in treating high blood pressure and see why it has such a long-standing heritage in traditional medicine.
The Physiology Behind Hawthorn and Blood Pressure
The berries in Hawthorn have vasodilatory compounds such as flavonoids and oligomeric procyanidins, whose function is to widen blood vessels, lower arterial tension, and stimulate the production of nitric oxide, all of which contribute towards lowering blood pressure. Hawthorn possesses a mild diuretic property, and its use helps in controlling blood pressure levels even more effectively.
Clinical studies have examined Hawthorn’s efficacy in mild to moderately hypertensive subjects with some nice results. As a complementary therapy and not a complete substitution for conventional antihypertensives, Hawthorn can serve as a beneficial alternative for anyone interested in a natural remedy.
Clinical Efficacy Evidence for Hawthorn
A 2012 randomized double-blind placebo-controlled study by AIA Al-Gareeb explored Hawthorn extract’s effects on stage I hypertensive patients. It was observed that there was a significant reduction in systolic and diastolic blood pressure compared to the placebo group. Moreover, the patients also had improved lipid profiles, including lowered LDL cholesterol levels, pointing towards Hawthorn’s cardiovascular-supportive role. [Read the study.]
Another clinical trial conducted in 2021 by M. Abbasi and colleagues tested the effects of Hawthorn extract on blood pressure and sleep in hypertensives. Results revealed a noteworthy reduction in blood pressure and enhancement of sleep, depicting further beneficial effect on general well-being. [Read the study.]
Animal Studies Provide Additional Information (A Nice Rat Study)
The study, “Effect of Crataegus oxyacantha Extract on Digoxin-Induced Arrhythmias in Anesthetized Wistar Rats,” aims to investigate the antiarrhythmic potential of Hawthorn (Crataegus oxyacantha) extract in mitigating cardiac toxicity caused by digoxin. Digoxin is a widely used cardiac glycoside for treating heart failure and arrhythmias, but in excessive doses, it can lead to life-threatening cardiac arrhythmias.
The precise mechanism by which the extract exerts its antiarrhythmic effects remains unclear, but researchers hypothesize that it may involve calcium regulation, antioxidant activity, and modulation of ion channels in cardiac cells.
This study provides valuable insights into the cardioprotective properties of Hawthorn extract. Previous research has shown that Crataegus species exhibit anti-inflammatory, vasodilatory, and antioxidant effects, all of which contribute to cardiovascular health.
These findings support the potential of Hawthorn extract as an alternative or complementary treatment for digoxin-induced arrhythmias. However, further clinical trials in human subjects are essential to confirm its efficacy, determine optimal dosing, and assess long-term safety.
The authors emphasize that despite its beneficial effects, the extract’s potential to lower blood pressure could pose risks, particularly for hypotensive patients, underscoring the need for careful patient selection and medical supervision when considering Hawthorn-based therapies for arrhythmia management. [Read The Study.]
Hawthorn and Vascular Health: Unlocking Secrets of Flow-Mediated Dilation
Flow-mediated dilation (FMD) is a significant marker of cardiovascular wellness, and it assesses blood vessel expansion and contraction capabilities. In 2012, a study conducted by GN Asher, AJ Viera, and MA Weaver evaluated the effectiveness of Hawthorn extract in enhancing FMD in pre-hypertensives and mild hypertensives.
In their study, the researchers uncovered significant improvements in FMD, and these improvements reveal that Hawthorn can enhance vascular function and elasticity, reducing cardiovascular complications. [Read the study.]
A Systematic Review Affirms the Evidence
While individual trials produce useful information, meta-analyses and systematic reviews paint a larger picture. In 2020, a systematic review of a number of trials comparing Hawthorn’s efficacy in blood pressure control was performed by A. Cloud, D. Vilcins, and B. McEwen.
In agreement with most studies, the review revealed a mild blood pressure drop in a range of studies and concluded that Hawthorn extract is safe and effective in mild hypertension, but dosing and long-term safety must be determined through additional studies. [Read the study.]
Hawthorn and Diabetes-Associated Hypertension
Another fascinating study examined Hawthorn’s effectiveness in individuals with hypertension and diabetes. A randomized controlled trial revealed that Hawthorn significantly lowered diastolic blood pressure in diabetic patients without interfering with prescribed medications.
This finding is particularly important as many natural remedies can interact with pharmaceuticals, yet Hawthorn appears to be a safe complementary therapy. [Read the study.]
Unlike antihypertensive drugs, which have a direct and rapid effect, Hawthorn’s activity is mild and gradual.
Hawthorn as a Complementary Therapy
Although Hawthorn possesses blood pressure-lowering potential, its character must first be appreciated. Unlike antihypertensive drugs, which have a direct and rapid effect, Hawthorn’s activity is mild and gradual. Thus, it is most appropriately utilized as a long-term supportive therapy rather than a standalone treatment for severe hypertension, offering comfort for persons who prefer a natural remedy.
Beyond blood pressure control, Hawthorn has been linked with increased lipid metabolism, reduced oxidative stress, and augmented cardiac function, earning it a role as a general cardiovascular tonic.
Safety Factors and Side Effects
Hawthorn extract is not dangerous, but it is powerful and does interact with certain medications. Due to its blood pressure-reducing action, it increases the effect of antihypertensive medications and leads to very low blood pressure. Therefore, individuals on prescription medication need to consult with their healthcare professional before they can add Hawthorn supplements to their regimen.
Dosage is important too. Clinical trials use standardized extracts of Hawthorn and not whole fruits. Supplements with standardized extracts containing at least 2-3% flavonoids are recommended to ensure full effectiveness.
Conclusion: Should You Use Hawthorn for Blood Pressure?
Research suggests that Hawthorn fruit possesses actual cardiovascular benefits, with increased blood vessel function, reduced arterial resistance, and enhanced circulation contributing to mild systolic and diastolic blood pressure reductions. While Hawthorn should not replace prescription medications, it can serve as a valuable complementary therapy for those with mild to moderate hypertension.
If you’re contemplating including Hawthorn in your wellness routine, particularly if you are taking medication, consulting a healthcare professional is a necessary step. With proper supervision, Hawthorn berries can become a safe and effective tool for supporting heart wellness and healthy blood pressure levels.
Ask your doctor if Hawthorn berries or Hawthorn extract is right for you.
