Arachidonic acid – What is it and why you don't want to consume too much of it?

If you consciously eat plant-based for your health, the planet, or animal welfare, you are already on the right track — but even within a plant-based diet, it is important to keep an eye on the balance of fatty acids . One substance that plays an important role in this is arachidonic acid .

What is it? What is it found in? And how can you reduce it through your diet?

What is arachidonic acid?

Arachidonic acid is an omega-6 fatty acid that plays a role in inflammation, blood clotting, immune responses, and cell growth. The body can produce it itself from linoleic acid, a common plant-based fatty acid.

In small amounts it is useful, but too much of it — especially without sufficient omega-3 — can promote inflammation.

What is arachidonic acid found in?

Direct arachidonic acid is found in:

• Meat (especially red and processed)

• Eggs

• Dairy

• Peanuts and peanut butter (in smaller quantities, but still present)

• Organ meat

Please note : although peanut butter is plant-based, it does contain a small amount of arachidonic acid. If you are already consuming a lot of omega-6 from other sources (such as oils), this can further disrupt the balance.

Why too much arachidonic acid is a problem

When the balance between omega-6 and omega-3 fatty acids is skewed, it can lead to:

• Chronic low-grade inflammation

• Increased risk of cardiovascular disease

• Negative influence on mood and brain function

• Immune system out of balance

In most Western diets, this ratio is severely skewed (sometimes 20:1, whereas 4:1 or even 2:1 would be healthier).

What can you do within a predominantly plant-based diet?

1. Limit omega-6 overload

Less: sunflower oil, soybean oil, corn oil, large amounts of peanut butter

Replace with: olive oil, avocado oil, flaxseed oil

2. Add more omega-3

Flaxseed, chia seed, hemp seed, walnuts, dark green leafy vegetables

3. Choose anti-inflammatory foods

Turmeric, ginger, berries, green tea, garlic, lots of vegetables

4. Lifestyle counts

Exercise, relaxation, sleep, and stress reduction are essential to keep inflammation low.

Key insights at a glance

Arachidonic acid is an omega-6 fatty acid that your body uses for inflammatory responses and cell building. Useful, but harmful in excess.

It is found primarily in animal products , but peanuts and peanut butter also contain a small amount. So be mindful of this, even within a plant-based diet.

Too much arachidonic acid (or omega-6 fatty acids in general) can lead to low-grade inflammation , which increases the risk of chronic diseases and mental imbalance.

A completely plant-based diet contains no direct sources of arachidonic acid , which is an advantage. However, do pay attention to your omega-6/omega-3 ratio — even on a plant-based diet, you can become unbalanced in this regard.

You can restore that balance by:

• to use fewer omega-6 rich oils and peanut products

• Add omega-3 sources more often, such as flaxseed, chia seeds, and walnuts.

• To adopt an anti-inflammatory diet and a healthy lifestyle

Core message :

Plant-based eating is a strong foundation. With a little extra attention to the quality of fats , you support your health and keep inflammation low.

References:

Scientific sources

1. Simopoulos, AP (2002). “The importance of the ratio of omega-6/omega-3 essential fatty acids.” Biomedicine & Pharmacotherapy, 56(8), 365–379. 🔗 https://doi.org/10.1016/S0753-3322(02)00253-6 This influential review highlights how a high omega-6/omega-3 ratio contributes to inflammatory diseases such as cardiovascular disease, cancer, autoimmune diseases, and depression.

2. Calder, PC (2015). “Functional Roles of Fatty Acids and Their Effects on Human Health.” Journal of Parenteral and Enteral Nutrition, 39(1_suppl), 18S–32S. 🔗 https://doi.org/10.1177/0148607115595980 Calder describes how arachidonic acid serves as a precursor for pro-inflammatory eicosanoids, and emphasizes the importance of increasing plant-based omega-3 intake in a Western diet.

3. Kris-Etherton, PM, et al. (2009). 🔹 “Omega-3 fatty acids and cardiovascular disease: new recommendations from the American Heart Association.” Circulation, 119(6), 902–907. 🔗 https://doi.org/10.1161/CIRCULATIONAHA.108.191627 This publication by the American Heart Association highlights the protective effect of omega-3 fatty acids and how an excess of omega-6 fatty acids, including arachidonic acid, can be detrimental to heart health.