If you spend any time reading about health or nutrition online, you will eventually encounter the phrase “ancestral diet”.
The idea is simple and appealing. Eat the foods our ancestors ate and avoid the industrial products that appeared in the modern food system.
That approach has revived interest in fats that were once considered old fashioned. Butter is back in the frying pan. Beef tallow has returned to restaurant kitchens. Coconut oil is now a staple in many health food cupboards. Even ghee has re-emerged as a premium cooking fat.
At the same time, modern industrial seed oils are increasingly questioned for their heavy processing and high levels of polyunsaturated fats.
So if you are trying to follow a more traditional approach to food, which fat actually makes the most sense?
Surprisingly, one of the most structurally balanced options rarely appears in the ancestral conversation at all.
Macadamia oil.
What Makes a Fat “Ancestral”?
Traditional fats tend to share several characteristics.
They are:
• minimally processed
• derived directly from whole foods
• stable during cooking
• part of long established cultural diets
Butter, tallow and ghee fit this pattern because they come directly from animal fat.
Coconut oil and olive oil also qualify because they have been mechanically extracted from plants for centuries without heavy industrial processing.
But ancestral popularity does not automatically mean metabolic superiority.
To understand why, it helps to look at what these fats are actually made of.
The Fat Composition That Matters
All cooking fats are made of fatty acids, but the proportions vary dramatically.
The three main categories are:
Saturated fats
Monounsaturated fats
Polyunsaturated fats
These categories influence both cooking stability and how the body responds to them metabolically.
Saturated fats are very stable under heat but are known to raise LDL cholesterol when consumed in higher quantities according to multiple controlled feeding studies.
Polyunsaturated fats are essential in small amounts but are chemically less stable when heated repeatedly.
Monounsaturated fats sit between the two. They offer good cooking stability and are consistently associated with favourable cardiovascular outcomes in large population studies.
This is why the fatty acid profile of a cooking oil matters far more than the marketing language attached to it.
Butter, Tallow and Ghee
Butter, tallow and ghee are classic ancestral fats.
They are rich in saturated fat, typically ranging between 50 and 65 percent depending on the source.
These fats are extremely stable during cooking and have been used traditionally in many cultures.
However, decades of nutritional research have shown that diets very high in saturated fat can increase LDL cholesterol levels, which remains a recognised risk factor for cardiovascular disease.
This does not mean butter or tallow must be eliminated from a diet. It simply means their strengths come with trade offs.
They provide stability and flavour, but they are not structurally ideal as the primary everyday fat for many people.
Coconut Oil
Coconut oil is often promoted as a healthier alternative because of its popularity in natural health circles.
But from a chemical perspective coconut oil is even more saturated than butter or tallow. In many cases it contains around 85 to 90 percent saturated fat.
While some of its fatty acids are medium chain triglycerides, multiple meta analyses including work published in Circulation have shown that coconut oil can significantly raise LDL cholesterol when compared with unsaturated vegetable oils.
It remains stable for cooking, but its metabolic profile is more complex than many wellness trends suggest.
Olive Oil
Olive oil occupies a unique position.
Extra virgin olive oil is rich in monounsaturated fats and contains beneficial polyphenols that contribute to the health outcomes seen in Mediterranean dietary patterns.
It is widely respected in nutrition science.
However, olive oil also contains higher levels of polyunsaturated fats than macadamia oil and its antioxidant content can degrade when exposed to heat, oxygen and light over time.
The quality of olive oil can also vary significantly depending on storage conditions and processing methods.
The Quiet Structural Advantage of Macadamia Oil
Macadamia oil rarely appears in ancestral diet debates, but its chemistry tells an interesting story.
Macadamia oil typically contains:
• around 75 to 80 percent monounsaturated fat
• relatively low levels of polyunsaturated fat
• far less saturated fat than animal fats or coconut oil
This composition makes it structurally very stable during everyday cooking while maintaining a fat profile that aligns with cardiovascular research supporting monounsaturated dominant diets.
In other words, it delivers the cooking stability people appreciate in traditional fats without the heavy saturated fat load.
When cold pressed and unrefined, macadamia oil also avoids the heavy industrial refining steps often used in large scale seed oil production.
Why Macadamia Oil Rarely Gets Mentioned
The reason is simple.
Macadamias are native to Australia and the oil has historically been produced in smaller volumes than globally dominant oils such as olive oil or coconut oil.
As a result it has not developed the same cultural mythology within ancestral diet communities.
But from a purely structural standpoint, macadamia oil sits remarkably close to what many people are actually looking for.
A minimally processed fat.
Stable enough for cooking.
Lower in saturated fat than traditional animal fats.
And high in the monounsaturated fats associated with healthy dietary patterns.
The Practical Takeaway
Ancestral eating is not about recreating a museum diet.
It is about understanding how food structure, processing and context affect health.
Butter, tallow and coconut oil can absolutely have a place in cooking. They have long cultural histories and excellent heat stability.
But if you are looking for a primary everyday oil that combines stability, minimal processing and favourable fat composition, macadamia oil deserves far more attention than it currently receives.
Sometimes the best option is not the loudest one in the conversation.
Sometimes it is the quiet achiever.