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Sep 2026

Supplement: Rhodiola

My Plan

La Rhodiola rosea es una raíz de clima frío tomada para la fatiga y el estrés, y para esos dos usos la evidencia moderna está en su punto más fuerte. A lo largo de unas semanas, un extracto de raíz estandarizado reduce las puntuaciones de fatiga y agotamiento relacionados con el estrés, agudiza la concentración, alivia la ansiedad leve y el ánimo bajo, y atenúa el aumento matutino del cortisol, la hormona del estrés. En un pequeño ensayo comparativo directo produjo una mejora menor en la depresión leve que el antidepresivo sertralina, aunque el ensayo era demasiado pequeño para distinguirlos de forma fiable, y causó muchos menos efectos secundarios.

No agudiza el pensamiento en personas que ya están descansadas. La pega es la propia evidencia: los ensayos son pequeños, cortos, realizados por unos pocos grupos de investigación a menudo vinculados a los fabricantes del extracto, de calidad dispar, y ninguno ha mirado más allá de doce semanas. Toma un extracto de raíz estandarizado de 200 a 400 mg por la mañana, dale una prueba definida de unas semanas, y júzgalo por cómo te sientes.

Cost
LowLow · Inexpensive root extract · daily dose · fatigue may ease within days to weeks
Effort
EasyEasy
Results In
Days to WeeksDays to Weeks

Findings & Outcomes

What It Is

Rhodiola rosea is a hardy plant that grows in cold, high places across the Arctic and the mountains of Europe and Asia. The root and rhizome are the parts used. It belongs to the group of herbs called adaptogens, plants said to help the body cope with stress, and people take it mainly to feel less tired and less stressed. That is where the human evidence is strongest, and strongest here still means small, short trials of a few standardized extracts. Modern supplements use a root extract standardized to two marker compounds, rosavins and salidroside, in roughly the ratio the trials used.

Rhodiola has a long empirical record behind its modern use. In Scandinavia and across Siberia it was a folk remedy for fatigue, cold, and hard physical work, and Carl Linnaeus documented its use in eighteenth-century Sweden. From the 1940s onward, Soviet and Scandinavian scientists studied it for decades as an adaptogen. They tested it in athletes, soldiers, students, and cosmonauts as a plant to sustain performance and recovery under strain, work that was treated at times as a state secret. Much of that research appeared in Russian and sits outside the modern controlled-trial literature. That research is a long record of practical use, which the later trials then tested. Panossian and colleagues' 2010 review gathers this traditional and Soviet-era record alongside the modern pharmacology.

How It Works

Rhodiola's extract carries many active compounds at once, chiefly rosavins and salidroside. It works as a whole-plant preparation acting on several systems, and no single molecule accounts for its effects. The best-mapped effect is on the body's response to stress, and the anti-fatigue benefit looks like rhodiola dampening that response under load. That is why its clearest effects show up in people who are already depleted and fade in people who are rested. These mechanisms are plausible and partly measured; none is settled.

Anatomy of the Practice

1A root, standardized to two markers

The studied preparation is a concentrated root and rhizome extract, usually standardized to about 3% rosavins and 1% salidroside, the ratio used in the trials. Products vary in how they are made and what they contain, which is one reason a result shown for one extract does not automatically carry to another.

2On the stress response

In the strongest fatigue trial, rhodiola blunted the surge of the stress hormone cortisol that normally follows waking. That is the mechanism researchers tie most directly to its effect on how tired and stressed people feel.

3Activating, and why timing matters

Rhodiola is activating, which fits its use for fatigue and low energy and its history as a stimulant. That activating quality is why the dose is taken earlier in the day, and why a few people find it too stimulating.

What It Does

Rhodiola's findings fall into a clear order of strength. Fatigue and stress sit at the top: this is the use with the most controlled support and the longest folk and Soviet-era record behind it. The two lines of evidence agree. Mood comes next, backed by a handful of small placebo-controlled trials, among them an 89-person depression trial and a smaller 57-person comparison against sertraline. Raw physical performance and thinking in already-rested people sit lowest, where a single dose does little and daily dosing does nothing. The findings below are graded on that basis.

One caveat shapes how much weight each finding carries. Almost every human trial of rhodiola shares the same limits:

  • It is small, from a few dozen to about a hundred people.
  • It is short, running from a single dose to twelve weeks, with nothing measured beyond that.
  • It tests one of only a few standardized extracts, so a result for one product may not carry to another.
  • It comes from a few research groups, several tied to the extract makers, with little independent replication.

Two independent systematic reviews that pooled these trials reached the same verdict: the studies are mixed in quality and at high or unclear risk of bias. A rigorous, well-reported randomized trial is still needed. That does not make the results wrong, and the fatigue and stress trials tend to agree. It means the effects read as early and specific to the extracts and doses studied.

Rhodiola's clearest use is a defined few-week trial for fatigue and stress, judged against how you feel. A diagnosed mood condition is a decision to make with a clinician.

The Research & Studies

Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.

Energy And Fatigue

Menos fatiga mental bajo estrés en dos pequeños ensayos controlados con placeboEmerging
In plain terms

En dos pequeños ensayos realizados durante semanas de alto estrés, un período de exámenes y turnos nocturnos hospitalarios, las personas que tomaron un extracto estandarizado de rodiola se sintieron y rindieron con menos fatiga mental que las personas con placebo.

In detail

Darbinyan 2000 administró a 56 médicos jóvenes sanos un extracto estandarizado SHR-5 o placebo en un diseño cruzado doble ciego durante bloques de dos semanas de turno nocturno, y halló una mejora estadísticamente significativa en un índice de fatiga construido a partir de pruebas de pensamiento asociativo, memoria a corto plazo, cálculo, concentración y percepción audiovisual durante las primeras dos semanas. Spasov 2000 aleatorizó a estudiantes extranjeros a SHR-5 o placebo a lo largo de un período de exámenes de 20 días y halló las ganancias más claras en las pruebas de aptitud física, fatiga mental y neuromotoras (P<0.01) con mejor bienestar general (P<0.05), mientras que las pruebas de corrección de texto y de golpeteo no se diferenciaron, y los autores consideraron que la dosis probablemente era subóptima. Ambos son pequeños, breves, y evalúan un único extracto, por lo que la señal es temprana y no está establecida.

The studies · 2

Darbinyan 2000, Phytomedicine · Phytomedicine

Spasov 2000, Phytomedicine · Phytomedicine

Anxiety And Stress

Menos agotamiento que el placebo durante 28 días en 60 adultos con fatiga relacionada con el estrésEmerging
In plain terms

En el ensayo controlado más sólido, los adultos diagnosticados con fatiga relacionada con el estrés mejoraron más con rodiola que con placebo a lo largo de cuatro semanas: menos agotamiento, concentración más aguda, y un pico matutino de hormona del estrés más pequeño.

In detail

Olsson 2009 fue un ensayo de fase III, aleatorizado, doble ciego, controlado con placebo, de grupos paralelos, en 60 hombres y mujeres de 20 a 55 años que cumplían los criterios nacionales suecos para el síndrome de fatiga. Ambos grupos mejoraron (hubo un efecto placebo), pero al comparar directamente, SHR-5 (576 mg de extracto/día durante 28 días) superó al placebo en la escala de agotamiento de Pines y en índices de atención de rendimiento continuo (omisiones, variabilidad del tiempo de reacción), y las respuestas de cortisol al despertar antes y después del tratamiento difirieron significativamente en el grupo de tratamiento. Este es un único ensayo pequeño, breve, con un solo extracto, y la escala de agotamiento es una medida de autoinforme.

The study · 1

Olsson 2009, Planta Med · Planta Med

Los síntomas de agotamiento y de estrés vital mejoraron en tres ensayos abiertos sin grupo placeboPreliminary
In plain terms

En tres estudios en los que todos sabían que estaban tomando rodiola y no había grupo placebo, las personas con agotamiento, estrés vital o fatiga prolongada reportaron sentirse mejor en las semanas siguientes.

In detail

Kasper 2017 (118 pacientes ambulatorios con agotamiento, 400 mg/día de WS 1375 durante 12 semanas), Edwards 2012 (101 pacientes con estrés vital, 200 mg dos veces al día durante 4 semanas) y Lekomtseva 2017 (100 pacientes con fatiga prolongada o crónica, 200 mg dos veces al día durante 8 semanas) fueron todos ensayos abiertos de un solo brazo: sin grupo de control, sin cegamiento, y los autores los describen como pilotos exploratorios generadores de hipótesis. Las escalas de síntomas mejoraron con el tiempo, a menudo dentro de la primera semana. Sin un brazo placebo, estos diseños no pueden separar el efecto del extracto de la expectativa y del alivio natural de los síntomas, razón por la cual se sitúan por debajo de los ensayos controlados.

The studies · 3

Kasper 2017, Neuropsychiatr Dis Treat · Neuropsychiatr Dis Treat

Edwards 2012, Phytother Res · Phytother Res

Lekomtseva 2017, Complement Med Res · Complement Med Res

Mood & stress

Menos ansiedad y ánimo bajo durante 14 días frente a un control sin tratamientoEmerging
In plain terms

Los adultos con ansiedad leve que tomaron rodiola durante dos semanas reportaron menos ansiedad, estrés y ánimo bajo que un grupo que no tomó nada.

In detail

Cropley 2015 aleatorizó a 80 participantes con ansiedad leve a un extracto de rodiola (2 x 200 mg/día) o a un control sin tratamiento durante 14 días. El grupo de rodiola mostró reducciones significativas en la ansiedad, el estrés, la ira, la confusión y la depresión autorreportados, y una mejora del estado de ánimo total, con un perfil de tolerabilidad favorable. La limitación clave es el diseño: el grupo de control no recibió tratamiento en lugar de placebo, y el estudio no fue cegado, por lo que la expectativa no está controlada. Los autores argumentan que el patrón gradual y específico de síntomas hace menos probable un efecto placebo puro, pero afirman que no pueden establecer una relación causal.

The study · 1

Cropley 2015, Phytother Res · Phytother Res

Counts once: this finding and 1 other here come from the same source, so they are one body of evidence, not separate confirmations.

Las puntuaciones de depresión disminuyeron 5.1 con rodiola, 8.2 con sertralina, 4.6 con placebo, sin diferencia fiableEmerging · mixed
In plain terms

En un pequeño ensayo comparativo directo, la rodiola se situó entre el antidepresivo sertralina y el placebo para la depresión, pero el ensayo era demasiado pequeño para que alguna de esas diferencias fuera fiable.

In detail

Mao 2015 fue un ensayo de fase II, aleatorizado, controlado con placebo, de prueba de concepto: 57 adultos con trastorno depresivo mayor de leve a moderado fueron asignados a extracto estandarizado de rodiola, sertralina o placebo durante 12 semanas. Las reducciones en las puntuaciones de la Escala de Depresión de Hamilton fueron modestas y no difirieron significativamente entre los grupos (p=0.79); las estimaciones puntuales fueron mayores para la sertralina (-8.2; IC del 95%: -12.7 a -3.6), intermedias para la rodiola (-5.1; IC del 95%: -8.8 a -1.3) y menores para el placebo (-4.6). El ensayo carecía explícitamente de poder estadístico para demostrar eficacia; su hallazgo más claro es sobre la tolerabilidad, donde la rodiola causó muchos menos eventos adversos que la sertralina.

The study · 1

Mao 2015, Phytomedicine · Phytomedicine

La depresión de leve a moderada mejoró con rodiola pero no con placebo en un ensayo de 89 personas y 6 semanasEmerging
In plain terms

En un ensayo anterior de seis semanas, las personas con depresión de leve a moderada mejoraron con rodiola en la mayoría de los síntomas, mientras que el grupo placebo no lo hizo.

In detail

Darbinyan 2007 fue un ensayo aleatorizado, doble ciego, controlado con placebo, de grupos paralelos, en 89 hombres y mujeres de 18 a 70 años con depresión de leve a moderada (puntuaciones de Hamilton de 21 a 31). Dos grupos activos (340 mg/día y 680 mg/día de SHR-5 durante 6 semanas) mostraron una mejora significativa en la depresión general, además del insomnio, la inestabilidad emocional y la somatización, mientras que el grupo placebo no; la autoestima no mejoró, y no se reportaron efectos secundarios graves. Es un único ensayo pequeño de un solo grupo de investigación, y no ha sido replicado de forma independiente a este tamaño.

The study · 1

Darbinyan 2007, Nord J Psychiatry · Nord J Psychiatry

Cardiorespiratory Fitness

Una dosis única aumentó ligeramente la resistencia de 16.8 a 17.2 minutos; la dosificación diaria no hizo nadaEmerging
In plain terms

Tomada como dosis única una hora antes del ejercicio, la rodiola dio un pequeño impulso a la resistencia, principalmente al hacer que el esfuerzo se sintiera más fácil. Tomarla a diario durante cuatro semanas no añadió nada.

In detail

De Bock 2004 (n=24, cruzado doble ciego controlado con placebo) halló que una dosis aguda de 200 mg elevó el tiempo hasta el agotamiento de 16.8 a 17.2 minutos y aumentó el consumo máximo de oxígeno, pero una fase de ingesta diaria de cuatro semanas no produjo ningún cambio en ninguna medida. Noreen 2013 (n=18, cruzado doble ciego) halló que una dosis aguda de 3 mg/kg aceleró una contrarreloj ciclista de 6 millas de 25.8 a 25.4 minutos y redujo las calificaciones de esfuerzo percibido y la frecuencia cardíaca de calentamiento, sin cambios en la mayoría de las demás variables. Los efectos son pequeños, provienen de dosis agudas únicas en muestras muy pequeñas, y el único brazo de dosificación crónica fue nulo.

The studies · 2

De Bock 2004, Int J Sport Nutr Exerc Metab · Int J Sport Nutr Exerc Metab

Noreen 2013, J Strength Cond Res · J Strength Cond Res

Counts once: this finding and 1 other here come from the same source, so they are one body of evidence, not separate confirmations.

Cognition

Sin pensamiento más agudo, tiempo de reacción ni atención en personas ya descansadasEmerging · no effect
In plain terms

En personas que no estaban exhaustas, la rodiola no agudizó el pensamiento, el tiempo de reacción ni la atención más allá de lo que mostró un grupo de control.

In detail

Los ensayos antifatiga miden el rendimiento bajo estrés o privación de sueño, donde la rodiola muestra una señal. Cuando la cognición se mide en personas descansadas, el panorama es plano: Cropley 2015 no halló diferencia entre grupos en las pruebas cognitivas a pesar de la mejora del estado de ánimo, y la fase de dosificación diaria de cuatro semanas de De Bock 2004 no halló cambios en el tiempo de reacción auditivo o visual, la velocidad de golpeteo en placa, ni la atención sostenida. El beneficio aparente parece estar ligado a contrarrestar la fatiga más que a elevar la capacidad cognitiva basal.

The studies · 2

Cropley 2015, Phytother Res · Phytother Res

De Bock 2004, Int J Sport Nutr Exerc Metab · Int J Sport Nutr Exerc Metab

Counts once: this finding and 1 other here come from the same source, so they are one body of evidence, not separate confirmations.

Evidence And Methods

Los 11 ensayos sobre fatiga presentaban un riesgo de sesgo alto o incierto, con poca replicación independienteEmerging · mixed
In plain terms

Cuando los revisores reunieron los ensayos y los calificaron, hallaron que los estudios eran pequeños, breves y de calidad poco sólida, y rara vez repetidos por un segundo equipo independiente. La dirección es alentadora; la certeza todavía no está presente.

In detail

Ishaque 2012 revisó sistemáticamente 11 ensayos de rodiola para la fatiga física y mental y concluyó que todos los estudios incluidos tenían un riesgo de sesgo alto o fallas de reporte que hacían incierta su validez real, que los resultados eran contradictorios, y que todavía se necesita un ECA riguroso y bien reportado. Hung 2011 revisó 11 ECA controlados con placebo en rendimiento físico, rendimiento mental y afecciones de salud mental, calificando la mayoría como de calidad moderada o buena en la escala de Jadad, pero halló una falta de replicación independiente de cualquier hallazgo individual. Esto describe el estado de la base de evidencia más que la dirección del efecto: los ensayos tienden a apuntar en la misma dirección, pero su tamaño, independencia y riesgo de sesgo son las razones para sostener la conclusión con cautela.

The studies · 2

Ishaque 2012, BMC Complement Altern Med · BMC Complement Altern Med

Hung 2011, Phytomedicine · Phytomedicine

Getting the Dose and Timing Right

Ways to Do It

The practical protocol is short: a standardized root extract, taken earlier in the day, for a defined stretch of weeks. Read the Cautions section below first, because a few situations make it a poor fit. No brand is named here on purpose; the form, the dose, the timing, and a full trial period are what decide whether it works for you.

1
Use a standardized root extract at 200 to 400 mg a day$Easy

The trials used a root and rhizome extract standardized to roughly 3% rosavins and 1% salidroside. Effective daily doses in the studies ranged from about 200 mg up to around 600 mg, with 400 mg a day the most common in the stress and fatigue trials. Standardization varies between products, so the label worth checking states its rosavin and salidroside content and carries an independent testing mark.

2
Take it in the morning$Easy

Rhodiola is stimulating, and the trials dosed it earlier in the day. Taken late it can be activating enough to disturb sleep in some people. A morning dose, or morning and early afternoon if you split it, keeps the effect where you want it and away from the night.

3
Give it a defined trial of a few weeks, then judge$Easy

Any effect builds over days to weeks, and the trials ran from about four to twelve weeks, so that is the window the evidence covers. Take it across that stretch and judge it against how you felt at the start. The trials found the effect, when it came, inside that window, and say nothing about a benefit appearing later. Pair it with the practices that have stronger evidence for the same goals, linked below.

Go Deeper

  • Ashwagandha: the other adaptogenic root taken for stress and sleep, with a similar small-trial evidence base and safety signals of its own to read.
  • Breath and heart-rate variability: a free, well-evidenced way to act on the same stress response, with no supplement to weigh.
  • The CBT-I protocol: the first-line, best-evidenced approach to poor sleep, to try before or alongside anything taken for stress-related sleeplessness.

The Chinese Medicine View

Rhodiola is best known in Tibetan medicine, where the plant, called Hong Jing Tian in Chinese, has a long history of use in the cold high country where it grows. It entered the Chinese materia medica later than the classical staples and is a relatively modern addition. It does not carry the centuries of commentary that an herb like ginseng does. In this tradition it is used as a medicinal in its own right.

In Chinese medicine terms, Hong Jing Tian is understood to tonify Qi, particularly of the Lung and Heart. It is also said to invigorate the Blood and move Blood stasis, and to clear heat from the Lung. Practitioners have used it for Qi deficiency with Blood stasis, for shortness of breath and cough, and for the fatigue and altitude strain of high, cold environments. That framing sits close to the modern use for fatigue and stress: a plant taken when energy and resilience run low. Rhodiola's standing rests on that long record of practical use as much as on the modern trials that point the same way. The Chinese framing offered here connects it to the rest of this library; it is not a claim that the tradition predicted the trial results.

Cautions For This Practice

Extra restraint

Everything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.

Pocos efectos secundarios durante varias semanas, y menos que con sertralina (30% frente a 63.2%)

Hung 2011, al revisar 11 ECA controlados con placebo, reportó solo unos pocos eventos adversos leves en los ensayos. Mao 2015 halló eventos adversos en el 30% del grupo de rodiola frente al 63.2% con sertralina y el 16.7% con placebo (p=0.012), y concluyó que la rodiola era mejor tolerada. Estos son datos tranquilizadores a corto plazo, medidos durante semanas a unos pocos meses; no dicen nada sobre el uso durante muchos meses o años, y los ensayos son demasiado pequeños para detectar daños poco frecuentes.Hung 2011, PhytomedicineMao 2015, Phytomedicine

Ningún ensayo duró más de doce semanas; el uso a largo plazo, durante el embarazo y la lactancia no se ha estudiado

Los ensayos controlados de rodiola abarcan desde una dosis aguda única hasta aproximadamente doce semanas. Tanto Ishaque 2012 como Hung 2011 concluyen que la base de evidencia es demasiado pequeña y demasiado breve para respaldar conclusiones firmes, y que se necesitan ensayos rigurosos, más largos y replicados de forma independiente. No hay datos de seguridad controlados para el uso más allá de unos pocos meses, y el embarazo, la lactancia y las interacciones con medicamentos no se han estudiado formalmente, razón por la cual la guía práctica limita el uso a un período de prueba definido y trata esas situaciones como motivos de precaución.Ishaque 2012, BMC Complement Altern MedHung 2011, Phytomedicine

It is stimulating, so keep it out of the evening

Rhodiola is activating for most people. Some find it energizing, and some find it too much: jitteriness, restlessness, irritability, or trouble sleeping if it is taken late in the day or at a higher dose. Taking it in the morning, starting at the lower end of the dose range, and easing up if you feel wired keeps it comfortable for most people.

Take care if you have bipolar disorder

Because rhodiola is activating and has an antidepressant-like effect in some trials, there is a reasonable concern that it could tip someone with bipolar disorder toward agitation or a manic or hypomanic state. If you have bipolar disorder or a history of mania, make this decision with the clinician who manages your care.

Pregnancy and breastfeeding: the data is not there

Rhodiola has not been studied in pregnancy or breastfeeding, so there is no basis for judging its safety in those situations. The cautious course is to avoid it while pregnant, trying to conceive, or breastfeeding until there is evidence to rely on.

It may interact with some medications

Given its effects on mood and stimulation, take care combining rhodiola with antidepressants, stimulants, or other mood medication, where the effects could add up. Raise it with your clinician or pharmacist if you take medication with a narrow margin of safety, such as for blood pressure, blood sugar, or blood thinning. When in doubt, check before combining.

Start slow, be smart, read the research, and consult a professional if you have any concerns. This is here to inform your choice, not make it for you.

Common Questions

Does rhodiola actually help with fatigue?

In small short trials, it points that way. The strongest controlled trial, in 60 adults with a stress-related fatigue syndrome, found less burnout and better concentration on a standardized extract than on placebo over four weeks. Two more trials during real stress, exams and hospital night shifts, found less mental fatigue. The caution is that these trials are small, brief, and mostly from a few groups. When reviewers graded the wider literature they found it contradictory and of high or uncertain quality. It is an early, promising signal for fatigue and stress that larger trials have yet to confirm.

Is rhodiola a reliable adaptogen that beats stress?

The stress and fatigue results are modest and early. The marketing that presents rhodiola as a dependable stress cure claims far more than the results show. The controlled trials show a short-term effect on stress-related fatigue and mood, and several open-label trials in burnout and life stress report people improving. Without a placebo group those cannot separate the extract's effect from expectation, which strongly shapes how someone feels under stress, so they support the case without settling it. The evidence is still small, short, and thin on independent replication. Give rhodiola a defined trial for stress and fatigue, judged on how you feel.

How much should I take, and when?

The trials used a root extract standardized to about 3% rosavins and 1% salidroside, at roughly 200 to 600 mg a day. In the stress and fatigue studies, 400 mg a day was the most common. Take it in the morning, because rhodiola is stimulating and a late dose can disturb sleep. Give it a defined stretch of about four to twelve weeks, the window the evidence covers, and judge it against how you felt at the start.

Can rhodiola help with depression or anxiety?

The evidence is early and should not be oversold. One 89-person trial found people with mild-to-moderate depression improved on rhodiola across most symptoms while the placebo group did not. A small 57-person head-to-head trial placed rhodiola between the antidepressant sertraline and placebo, though that trial was too small for the differences to be reliable. For anxiety, a two-week trial found lower self-reported anxiety and stress, though its comparison group took nothing instead of a placebo. Part of the change reflects the ordinary lift of taking something and expecting to improve, which matters in its own right. Rhodiola is not a treatment for clinical depression; a mood condition is a good reason to bring a clinician into the decision.

Does rhodiola have side effects?

For most people, over the weeks the trials covered, few. A review of eleven controlled trials found only a few mild adverse events. In the depression trial far fewer people reported side effects on rhodiola than on sertraline, 30% against 63.2%. The main thing people notice is that it can be too stimulating, especially late in the day or at higher doses. Longer-term use has not been studied, and it has not been studied in pregnancy or breastfeeding, so those and the interactions above are the situations to take seriously. The Cautions section above has the detail.

Explore Related

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All 19 sources on this page independently checked and cross-referenced.

Thomas Dehli, Founder & Editor, Sacred Lotus

Sacred Lotus has published Chinese medicine reference material since 2001. Integrative pages are held to the same standard as the herb and formula library: cite the source, grade the claim at its real strength, and say where the research has not looked. This page is educational and it is not medical advice. Last reviewed and updated August 9, 2026.