"The war on fat is over - at least in terms of dietary fat. It is clear that your body needs good fats for a variety of essential functions, from storing energy and maintaining healthy brain function to creating healthy cells and hormones." Dr Daniel Amen, founder of Amen Clinics and author of Memory Rescue.

For years we were told that fat was the enemy.

Low-fat yoghurts. Low-fat spreads. Low-fat snacks.

Many people diligently cut fat from their diets believing they were protecting their health.

Yet your brain is one of the fattiest organs in your body and depends on healthy fats to function well.

So what if avoiding fat is actually making it harder for your brain to function at its best?

The truth is that your brain is nearly 60% fat. It relies on healthy fats to build brain cells, support memory, regulate mood, and protect itself as you age.

The key isn't to avoid fat - it's to choose the right fats.

Why Your Brain Needs Fat

Many people are surprised to learn that fat is a major structural component of the brain.

Healthy fats help:

• Build and maintain brain cell membranes

• Allow brain cells to communicate efficiently

• Support learning and memory

• Maintain mental sharpness

• Protect brain tissue from damage

You might compare it to electrical wiring. The insulation around electrical wires helps messages travel quickly and efficiently. Healthy fats perform a similar role for your brain cells.

Healthy Fats May Help Protect Against Cognitive Decline

Research increasingly suggests that diets rich in healthy fats are associated with better cognitive function and a lower risk of dementia.

This is one reason why traditional Mediterranean-style diets are consistently linked with healthier brain ageing.

The goal isn't to eat more fat indiscriminately - but to replace unhealthy fats with healthier ones.

Not All Fats Are Created Equal

This is where many people get confused.

Fats To Eat More Often

• Extra virgin olive oil

• Avocado oil

• Extra virgin coconut oil

• Avocados

• Nuts and seeds

• Oily fish such as salmon, sardines and mackerel

Fats To Limit

• Trans fats

• Hydrogenated fats

• Deep-fried foods

• Highly processed vegetable oils

• Ultra-processed foods

The type of fat matters far more than the amount.

Three Brain-Healthy Oils To Start Using

You don't need a complete kitchen makeover.

Simply upgrading the oils you use can be a powerful first step.

1. Extra Virgin Olive Oil

If I could recommend just one oil, this would probably be it.

Extra virgin olive oil contains powerful plant compounds called polyphenols that help combat inflammation and oxidative stress.

Benefits include:

• Supports healthy blood flow

• Helps protect brain cells

• Associated with better memory and cognitive function

• Supports heart health too

Easy Ways To Use It

• Drizzle over salads

• Add to vegetables

• Stir into soups

• Use as a dressing

Choose extra virgin olive oil rather than refined olive oil whenever possible.

2. Avocado Oil

Avocado oil is rich in monounsaturated fats, similar to olive oil.

It has a mild flavour and a higher smoke point, making it useful for cooking.

Benefits include:

• Supports healthy blood vessels

• Helps reduce inflammation

• Contains antioxidants

• Easy to use in everyday cooking

Easy Ways To Use It

• Roasting vegetables

• Stir-fries

• Stews and casseroles

3. Extra Virgin Coconut Oil

Coconut oil is more controversial than olive or avocado oil, but it still has a place in a brain-healthy diet.

It contains medium-chain triglycerides (MCTs), which the body can convert into ketones.

Ketones can provide an alternative fuel source for the brain, which is one reason coconut oil has generated interest in brain health research.

Easy Ways To Use It

• Stir-fries

• Use in baking

• Use in curries

A helpful reminder: coconut oil is best viewed as a complement to olive oil rather than a replacement for it.

Closing Thoughts

For decades, many of us were taught to fear fat. Yet your brain depends on healthy fats every single day.

Choosing the right fats can support memory, focus, mood, and long-term brain health while helping you age with greater clarity and confidence.

Because protecting your brain isn't about avoiding fat.

It's about giving your brain the nourishment it needs to thrive.