How Rancid Oils Impact Your Health: why to choose fresh nuts & seeds and why storing them properly is important.

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Firstly, this blog isn’t meant to be a scare tactic or guilt people into buying organic food.
I am passionate about health & wellness and being the best version of yourself as you can be, for as long as you can. I’m not too concerned about what age I live to, rather than, how good I feel as I get older.

As I have read and learnt about various health topics I have gradually changed my lifestyle, diet, the way I shop, the way I cook and the movement I engage in. Sharing this information with others is a way for me to hopefully help others who share this passion and journey of living a healthy life, making us feel happier and healthier! I aim for these articles to be short and sweet. Easy to read bite-sized bits of info that spark your interest and maybe inspire you to find out more from the experts.

Last week’s blog I wrote about storing your nuts and seeds to ensure they stay fresh, taste great and maintain their nutritional value. (Click here to read last week’s blog)


I mentioned that the fats in nuts and seeds can be easily oxidised when exposed to heat, light and air, not only making them taste nasty but also negatively impacting our health.

So what exactly do these oxidised fats do to our bodies? What makes them so bad for us?
Why should we go to the effort of sourcing local, fresh, raw and organic nuts and then storing them in a way which will preserve their health promoting properties?

Eating rancid nuts and seeds isn’t really going to make you sick or unhealthy in the short term, but when eaten over a longer time, oxidised fats have been associated with diseases such as Alzheimer’s and heart disease.

Nuts and seeds contain saturated, mono-unsaturated and poly-unsaturated fats. Depending on the type, these different fats will be present in various ratios. When nuts and seeds are not stored properly and stored for a long time (i.e. conventional nuts and seeds on supermarket shelves) or exposed to heat and air (e.g., roasted and ground nuts), the fats will oxidise, causing free radicals in your body.

Most of us have heard of free radicals and understand that we must consume antioxidants to help reverse the effects. But what does it really mean in terms of how it can impact our health? Well, free radicals cause inflammation in the body, leading to numerous health issues. Firstly, it negatively impacts the brain causing “normal” symptoms such as brain fog, lack of concentration and forgetfulness. It can cause inflammation in our gut, as this is where approximately 50% of our body’s immune system lies, leading to digestive distress. Chronic inflammation has also been linked to cardiovascular disease, cancer, diabetes and Alzheimer’s.

Whilst eating a few rancid nuts here and there may not cause major problems on its own, when consumed along with other oxidised fats (e.g. fried foods, heated olive oil, vegetable oils) and paired with other modern lifestyle toxins, they can negatively impact our health. It is worth doing what you can in the areas of your life that are under your control to live as healthy and happy as can be.

If you want to read and learn more detail about this topic I would definitely recommend the following resources:

-Headstrong by Dave Asprey

-The Inflammation Solution by Dr William Sears 

If you have any great resources on this topic I would love to hear from you! I am certainly no expert and would love to learn more about topics such as this. 

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