14 Amazing Health Benefits of Rosemary

Rosemary is much more than a fragrant herb used to flavour soups, roasted vegetables and other dishes. Rich in naturally occurring plant compounds such as rosmarinic acid, carnosic acid and carnosol, rosemary has attracted attention for its antioxidant and anti-inflammatory properties. Traditionally used in herbal remedies, rosemary is now also being explored for its potential role in supporting brain health, digestion, hair and scalp health, skin health and overall wellbeing. While more research is needed to confirm several of these benefits in humans, adding rosemary to a balanced diet can be a simple way to include beneficial plant compounds in everyday meals.

1. Rich in antioxidants

Rosemary contains powerful antioxidant compounds that help protect cells from oxidative stress caused by free radicals.

Its key compounds include:

Rosmarinic acid
Carnosic acid
Carnosol
Flavonoids

Regularly including rosemary in a balanced diet may support the body's natural antioxidant defenses.

2. May support brain health and memory

Rosemary has traditionally been associated with memory and concentration. Some research suggests that compounds in rosemary may influence brain activity and antioxidant protection.

Its aroma has also been studied for its potential effects on alertness, memory and cognitive performance. However, this does not mean rosemary can prevent dementia or other neurological diseases.

3. May have anti-inflammatory properties

Rosemary contains bioactive compounds that demonstrate anti-inflammatory activity in laboratory and experimental research.

This may make rosemary useful as part of an overall healthy diet, particularly because chronic inflammation is associated with several long-term health conditions.

4. Supports digestion

Rosemary has traditionally been used as a digestive herb. It may help support normal digestion and is sometimes consumed as rosemary tea after meals.

Traditionally, rosemary has been used for:

Bloating
Indigestion
Mild stomach discomfort
Supporting appetite

Evidence for treating digestive disorders specifically is more limited, so it shouldn't replace medical treatment.

5. May support healthy blood sugar levels

Some experimental research suggests rosemary compounds may influence glucose metabolism and insulin-related pathways.

This is promising, but rosemary should not be considered a treatment for diabetes. People taking diabetes medication should also avoid using concentrated rosemary supplements without medical advice because of the possibility of affecting blood glucose.

6. May support heart health

Rosemary contains antioxidants that may contribute to cardiovascular health as part of a healthy diet.

Replacing excessive salt or heavily processed seasonings with herbs such as rosemary can also be a practical way to add flavor while reducing sodium intake.

7. May have antimicrobial properties

Compounds in rosemary have demonstrated antimicrobial activity against certain microorganisms in laboratory studies.

This is one reason rosemary extracts and essential oil are used in some food-preservation and cosmetic applications. However, laboratory antimicrobial activity does not mean drinking rosemary or applying rosemary oil can treat an infection.

8. May benefit hair and scalp

Rosemary is particularly popular in hair-care routines. Rosemary oil has been investigated for hair growth, and one clinical study found improvement in hair count after several months of use in people with androgenetic alopecia.

It may potentially help by supporting scalp health and improving local circulation, although more research is needed.

Important: Rosemary essential oil is highly concentrated and should generally be diluted before applying to the scalp. It should not be swallowed.

9. May support skin health

The antioxidant compounds in rosemary may help protect skin from oxidative stress. Rosemary extracts are therefore used in some skincare products.

Its potential benefits include:

Antioxidant protection
Supporting the skin barrier
Helping reduce environmental oxidative stress
Supporting healthy-looking skin

However, concentrated rosemary oil can irritate sensitive skin, so a patch test is advisable.

10. May support liver health

Animal and laboratory studies have investigated rosemary compounds for their antioxidant and protective effects on liver cells.

Although the results are interesting, there isn't enough human evidence to claim that rosemary detoxes the liver. The liver already performs the body's major detoxification processes.

11. May help with healthy circulation

Rosemary has traditionally been used to support circulation. Some of its compounds may have effects on blood vessels and circulation, although evidence in humans remains limited.

12. May help reduce mental fatigue

The aroma of rosemary has been investigated for possible effects on alertness and mental performance. Some people find its scent refreshing and stimulating.

Using rosemary aromatically may therefore be useful as part of a relaxation or study routine, but it shouldn't be regarded as a treatment for chronic fatigue.

13. May support oral health

Because rosemary contains compounds with antimicrobial and antioxidant properties, rosemary extracts have been investigated for oral-health applications.

However, rosemary tea or oil should not replace brushing, flossing or professional dental care.

14. May provide useful nutrients

Although rosemary is normally eaten in small quantities, fresh rosemary provides small amounts of nutrients including:

Vitamin C
Vitamin A
Calcium
Iron
Manganese
Dietary fiber

Its biggest nutritional advantage, however, comes from its plant compounds and antioxidants, rather than its vitamin content.