Bilberry – Traditional Use & Research

Botanical Overview

Bilberry (Vaccinium myrtillus) is a low-growing perennial shrub native to Europe, particularly thriving in woodland clearings, heaths and mountainous regions. Closely related to the blueberry, bilberry produces smaller, darker berries with intensely pigmented flesh. These deep blue-black pigments are a key feature of the plant’s phytochemical profile and have been central to both traditional use and modern scientific interest.

Summary of Traditionally Reported Benefits

Bilberry (Vaccinium myrtillus) has a long history of traditional use in European herbal medicine and has been the subject of extensive scientific interest, particularly in relation to circulation, vision and cellular protection.

Traditionally and in research contexts, bilberry has been associated with:

Support of micro-circulation and capillary strength
Traditional use for eye health and night vision
Antioxidant protection due to high anthocyanin content
Support for vascular integrity and peripheral blood flow
Traditional use during periods of visual strain and fatigue
Research interest in retinal health and age-related changes
Support of cognitive function and memory through circulation
Nutritional support as a polyphenol-rich berry
Antioxidant activity relevant to cellular ageing processes

Bilberry remains one of the most researched traditional berries in European herbal practice, valued both historically and in modern phytochemical studies for its rich anthocyanin profile.

Traditional Use

Bilberry has a long history of use in European herbal medicine as both a nourishing food and a medicinal berry. Traditionally, bilberries were gathered wild and consumed fresh, dried, or prepared as syrups, wines and tinctures.

Herbalists historically associated bilberry with circulatory health, particularly the fine capillary networks of the eyes and peripheral tissues. Bilberry was also traditionally used during periods of physical strain, poor night vision, fatigue and recovery from illness.

During the 20th century, bilberry became widely known following reports from military pilots during the Second World War, who observed improved night vision after consuming bilberry preserves. Although anecdotal, these observations prompted decades of scientific research into bilberry’s effects on visual function and microcirculation.

Circulation & Microvascular Support

Traditional herbal practice associated bilberry with strengthening and protecting the microcirculation — the network of very small blood vessels responsible for delivering oxygen and nutrients to tissues.

Bilberry was traditionally selected for:

Supporting peripheral circulation
Maintaining healthy capillary integrity
Supporting retinal and visual function

These traditional uses align closely with modern research into bilberry’s anthocyanin content and its influence on vascular function.

Vision & Eye Health Traditions

Bilberry has long been regarded as a key herb for visual health. Traditional herbalists used bilberry to support eyesight, particularly in low-light conditions and during prolonged visual strain.

Historically, bilberry was included in formulas intended to:

Support night vision
Maintain retinal health
Assist recovery from eye fatigue

These traditional associations have been a major focus of scientific research since the mid-20th century.

Scientific Interest & Clinical Research

Modern scientific research has identified bilberries as a rich source of anthocyanins, powerful flavonoid compounds responsible for the berry’s deep colour. Anthocyanins are known for their antioxidant activity and their role in supporting vascular and connective tissue health.

Key areas of research include:

Microcirculation & Capillary Strength

Studies have shown that bilberry anthocyanins influence capillary permeability and resilience, supporting blood flow in fine vessels. This has implications for peripheral circulation, retinal health and tissue oxygenation.

Visual Function

Clinical and observational studies have explored bilberry’s effect on night vision, visual acuity and retinal adaptation. Research conducted since the 1960s has consistently highlighted bilberry’s relevance to eye health.

Antioxidant & Cellular Protection

Bilberry exhibits one of the highest antioxidant capacities among fruits. Its anthocyanins help neutralise free radicals and protect tissues from oxidative stress.

Metabolic & Cardiovascular Research

More recent studies have examined bilberry’s role in lipid metabolism, glucose regulation and cardiovascular health. Compounds such as pterostilbene and resveratrol-like stilbenes have been investigated for their influence on cholesterol and inflammatory markers.

Cognitive & Neurological Interest

Emerging research has explored bilberry and related berries in relation to cerebral blood flow and cognitive ageing, with studies suggesting benefits for memory and mental performance in older adults.

Historical Context

The earliest recorded medicinal use of bilberry appears in the writings of Hildegard of Bingen, a 12th-century herbalist, physician and abbess, who recommended bilberry for a range of conditions.

During the 16th century, bilberry was widely used in Europe for digestive complaints and scurvy, likely due to its vitamin C content. Its role as both food and medicine reflects the traditional herbal principle of nourishment as a foundation for health.

Nutritional Profile

Bilberries are naturally rich in:

Vitamin C
Anthocyanins
Flavonoids
Polyphenols

These compounds contribute to bilberry’s long-standing reputation as a functional food with both nutritional and therapeutic value.

Summary

Bilberry occupies a unique position in herbal medicine as a plant supported by both extensive traditional use and modern scientific research. Its longstanding association with vision, circulation and cellular protection is reinforced by contemporary studies into its anthocyanin-rich profile.

As a result, bilberry continues to be regarded as one of the most clinically relevant medicinal berries in European herbal practice.