Blueberries (anthocyanins) and DHA: A promising approach to support dry eyes

In our increasingly digital world, we spend more and more time in front of screens - be it on a computer, tablet, smartphone or laptop. While these technologies make our everyday lives easier, one of the less pleasant side effects does not go unnoticed: dry eyes. Long hours in front of the screen, combined with an insufficient amount of blinking and the associated reduction in natural tear production, can affect the well-being of the eyes. But what can we do to support our eyes in the best possible way?

A new study published in the journal Frontiers in Nutrition is investigating whether certain supplements can help support eye health, focusing on two key components: blueberry extract and DHA (an omega-3 fatty acid). The results of this pilot study may be of interest to many people who suffer from dry eyes.

Blueberries: A natural treasure for eye health

Bilberries (Vaccinium myrtillus L.), also known as blueberries, have long been known for their health-promoting properties. The small berries contain anthocyanins, which give the fruit its characteristic dark blue color. Anthocyanins are a type of flavonoid and are valued for their antioxidant properties, which can support eye health, among other things.

Research particularly highlights the potential of blueberry extracts to support eye health. The berry's antioxidant ingredients are said to promote blood flow in the eyes and can help protect cells from oxidative stress. Previous studies suggest that blueberry extracts could help reduce eye strain and associated fatigue.

DHA: A valuable Omega-3 for the eyes

DHA (docosahexaenoic acid) is an omega-3 fatty acid that plays an important role in human vision. DHA is a major component of the membranes in the cells of the retina and is therefore crucial for eye health. Some studies suggest that DHA may help support the stability of the tear film and reduce the sensitivity of the eyes to irritation.

The Pilot Study: A Look at the Details

The pilot study examined subjects from different age groups who suffered from dry eyes. They were divided into two groups: a test group that took a combination of 600 mg of blueberry extract and 240 mg of DHA per day, and a control group that either took no action or received a placebo.

The study period was three months, and the researchers monitored several parameters to evaluate the effects of the supplement. The parameters examined included the Ocular Surface Disease Index (OSDI), the Noninvasive Tear Film Breakup Time (NITBUT), the Phenol Red Thread Test (PRT), and the percentage of open meibomian glands. These parameters are important indicators of the condition of the ocular surface and the quality of the tear film.

results of the study

The results of the study show that the subjects in the test group showed significant improvements in various parameters. In particular, a stabilization of the tear film and an improvement in tear volume were observed. These results suggest that the combination of blueberry extract and DHA could support eye well-being.

In addition, the researchers found that improvements in the test group were consistent across different age groups, suggesting broad applicability of the supplement. This consistency is especially important because dry eyes can occur in both younger and older people.

Scientific Perspective and Further Investigations

While the results of this pilot study appear promising, the researchers stress that further research is needed to explore the full potential of the combination of blueberry extract and DHA. In particular, future studies could focus on determining the optimal dosage and the long-term effects of the supplement. In addition, it would be interesting to investigate whether lower doses of DHA show similar effects or whether the anti-inflammatory properties can be attributed solely to the blueberry extract.

The present study provides initial evidence that blueberry extract in combination with DHA may be a natural supplement to support eye health. This is particularly relevant as dry eyes are increasingly becoming a widespread problem in the population, especially at a time when screen work is ubiquitous.

A holistic approach to eye health

Eye care should be a priority in our daily routine, especially given the strain our eyes experience from digital devices on a daily basis. The results of the study in question suggest that incorporating blueberry extract and DHA into daily routines could provide a natural way to support eye health. However, this is a complementary approach that can complement traditional methods of eye care and support.

It is important to realize that more research is needed to understand the long-term effects of this supplement, but consuming blueberries and foods or supplements containing DHA may be a useful part of a holistic approach to eye health.

For those who spend a lot of time in front of screens and want to support eye health, blueberry extract and DHA may be worth considering. A holistic approach that includes diet, lifestyle and possibly targeted supplementation can help promote eye well-being naturally.

Source: Frontiers in Nutrition "Bilberry-containing supplements on serve dry eye disease in young and middle-aged adults: A 3-month pilot analysis", January 2023

Support through dietary supplements

Our dietary supplement NOMOADULT® Nyctal offers a complementary option to support the treatment of dry eyes. This product contains the promising combination of anthocyanins and DHA.

Further interesting information can be found here:

• Dry Eye (Sicca Syndrome) – Causes, Symptoms and Treatment Options – Nomosan Nutraceuticals
• Omega-3 fatty acids and their importance for the prevention of Alzheimer's disease – Nomosan Nutraceuticals
• Anthocyanins & Eye Health: New Insights – Nomosan Nutraceuticals
• Therapeutic effects of anthocyanins on vision and eye health – Nomosan Nutraceuticals
• Nyctalopia and the power of anthocyanins – Nomosan Nutraceuticals