Our liver is one of the hardest-working organs in our body, yet it's probably one we give very little thought to until something goes wrong.
Every day, it's quietly carrying out hundreds of essential functions. From processing nutrients and breaking down alcohol to metabolising hormones and helping regulate cholesterol, our liver plays an extraordinary role in keeping us healthy, and there's one herb that has been associated with liver health for centuries: milk thistle.
At Herbs of Grace, we've long valued milk thistle as part of our traditional herbal approach. But what makes this rather beautiful, prickly plant so interesting, and what does the science tell us?
What is milk thistle?
Milk thistle (Silybum marianum) is a flowering plant recognised by its vibrant purple flowers and distinctive green leaves marked with milky-white veins. Originally native to the Mediterranean region, it has a long history of use in European herbal medicine, particularly for liver and digestive health.
It's the seeds, in other words, the fruits, that are most used in herbal preparations. These contain a fascinating mixture of naturally occurring plant compounds, including a group known collectively as silymarin.
How does milk thistle work to support the liver?
Much of the modern scientific interest in milk thistle centres on silymarin, a mixture of compounds including silybin, which has been studied for its antioxidant and anti-inflammatory activity.
To understand why that's important, it helps to know a little about what our liver does.
As the liver processes substances from our diet, medications, alcohol and the body's normal metabolic activity, free radicals can be produced. These unstable molecules are a normal part of life, but when their production exceeds our antioxidant defences, they can contribute to oxidative stress and cellular damage.
Researchers have investigated several ways in which silymarin may influence these processes.
1. Antioxidant activity
Silymarin has demonstrated antioxidant properties in laboratory research. It may help neutralise free radicals and influence the body's own antioxidant defence systems, including glutathione.
Glutathione is particularly important because it helps protect cells against oxidative damage.
2. Protection of liver cells
Laboratory studies suggest that silymarin may help protect liver cells against certain types of injury by influencing cell membranes and the processes involved in oxidative damage.
This potential protective activity is one reason milk thistle has attracted so much scientific interest.
3. Inflammation and liver health
Inflammation is part of the body's natural response to injury, but persistent inflammation can contribute to tissue damage.
Research suggests that silymarin can influence some of the biological pathways involved in inflammation, although the extent to which this translates into clinical benefits remains uncertain.
4. Liver cell regeneration
Our liver has a remarkable natural ability to regenerate.
Some experimental studies suggest that silymarin may influence processes involved in protein synthesis and cellular recovery.
It's an interesting area of research, and herbalists will be cheering to hear that the scientific community is making these discoveries. So far, in those studies milk thistle has not been conclusively shown to regenerate damaged human livers or reverse liver disease. Researchers are still investigating its potential.
Why do herbalists value the whole milk thistle seed?
One of the principles of traditional herbal medicine is that a plant is more than just one active ingredient.
While much of the scientific research into milk thistle focuses on silymarin, the seeds contain a much wider range of naturally occurring compounds, including fatty acids, proteins and other plant constituents.
Herbalists have traditionally valued this complexity, recognising that the different constituents of a plant may work together in ways we're still learning to understand.
This is sometimes described as herbal synergy.
It's a philosophy that has always been important to us at Herbs of Grace.
Rather than isolating or concentrating one compound, we use carefully selected, powdered herbs in their natural form. This approach retains a broad spectrum of the plant's naturally occurring constituents.
Is a stronger herbal extract always better?
It's tempting to assume that the higher the concentration of an active ingredient, the more effective an herbal supplement will be.
But more isn't necessarily better.
Not everybody needs a highly concentrated extract or a large dose of a particular herb. The appropriate preparation and amount depend on the herb, the individual and the intended purpose.
Herbalists have traditionally recognised this individuality, considering the whole person rather than simply focusing on the strength of a preparation.
Of course, standardised extracts have an important place in herbal medicine, particularly where research has established the dose and preparation being studied. Whole-herb preparations aren't automatically more effective, and their active compound content may be lower or more variable.
Our preference for whole powdered herbs reflects our commitment to the traditional herbalist's approach: working with the complexity of the plant rather than concentrating exclusively on one isolated constituent.
Why we've included milk thistle in The Defender
At Herbs of Grace, we believe that understanding the individual qualities of herbs is just as important as understanding how they have traditionally been combined.
Milk thistle is one of the key ingredients in The Defender, our carefully considered herbal blend inspired by traditional approaches to liver and digestive wellbeing.
We've combined seven herbs, each with its own history of traditional use.
- Milk thistle seed: Traditionally valued for liver health and the subject of considerable research into silymarin.
- Dandelion root: A traditional bitter herb associated with digestion and bile secretion.
- Schisandra berry: Used in traditional East Asian herbal medicine and studied for its lignans and antioxidant activity.
- Barberry bark: A bitter botanical with a long history of use in digestive herbal preparations.
- Burdock root: Traditionally used in European and Asian herbal medicine, including preparations associated with digestion.
- Fennel seed: Widely used in herbal traditions for digestive comfort.
- Ginger root: A familiar warming herb with a long history of digestive use.
We've brought together these complementary herbs in a formula rooted in traditional herbal knowledge. And, as with all our capsules, we use powdered herbs without unnecessary fillers or binders.
A story about milk thistle that stayed with me
Some time ago, I shared a reel about an herbalist and a patient who had been taking milk thistle. The patient returned to her clinician, and she was delighted to hear that her liver health was improving.
Naturally, the herbalist was pleased too!
I remember sharing the story because it illustrated something I find so interesting about herbal medicine: the relationship between traditional knowledge, individual experience and the growing body of scientific research.
It's an example of why people continue to be interested in this remarkable herb and why understanding its properties is worthwhile.
What about milk thistle and women's hormonal health?
This is another aspect of liver health that I find particularly fascinating.
Our liver plays an essential role in metabolising hormones, including oestrogen. Once hormones have been processed, their metabolites can be eliminated through the body's normal pathways.
During perimenopause and menopause, when our hormone levels are changing, it's worth remembering that our liver is part of this complex hormonal picture.
However, there is currently insufficient clinical evidence to suggest that taking milk thistle balances oestrogen, corrects hormonal imbalances or treats menopausal symptoms. For me, this reinforces the importance of looking at women's health, rather than considering individual organs and symptoms in isolation.
Looking after your liver naturally
One of the most remarkable things about the liver is that it's constantly working to maintain the body's normal functions, and although herbs such as milk thistle have a fascinating history, the foundations of liver health remain the everyday choices we make.
A varied, fibre-rich diet, regular physical activity, maintaining a healthy weight, moderating alcohol and getting adequate rest all contribute to our overall wellbeing. Herbal supplements can be part of this wider approach, but they shouldn't be viewed as substitutes for medical care or healthy habits.
Milk thistle also isn't suitable for everyone. Anyone taking regular medication, managing liver disease, or who is pregnant or breastfeeding should seek appropriate professional advice before using herbal supplements.
The enduring appeal of milk thistle
I think one of the most exciting things about herbal medicine is how much there still is to discover. Milk thistle has been used for centuries, and researchers continue to investigate its complex chemistry and potential effects on the body.
For us at Herbs of Grace, it represents something we've always believed in the value of traditional herbal knowledge, alongside a willingness to learn from modern science.
It's this philosophy that guides our approach to The Defender, combining carefully chosen whole powdered herbs in a traditional formula.
Discover The Defender and the herbs we've brought together in our traditional blend.
