Dietary Fat Explained: What to Eat and Why It Matters

Quick answer: Dietary fat is essential, but the type and overall pattern matter more than labelling one food as a miracle or a problem. Most people benefit from getting more of their fats from foods such as fish, nuts, seeds, avocado and unsaturated oils, while keeping saturated fat in context.

The original version of this article overstated the benefits of coconut oil. Current evidence does not support presenting coconut oil as a weight-loss food, a metabolism booster or a treatment for cognitive decline.

Why your body needs dietary fat

Fat provides energy, supplies essential fatty acids and helps the body absorb fat-soluble vitamins. It also affects the taste and satisfaction of a meal. Removing fat completely is neither necessary nor helpful; the practical question is which sources make up most of your intake.

Unsaturated and saturated fats are not interchangeable

Unsaturated fats are found in foods such as olive oil, nuts, seeds, avocado and oily fish. Saturated fats are found in foods including butter, fatty meats, coconut oil and palm oil. The World Health Organization’s healthy-diet guidance recommends replacing saturated fat with unsaturated fat or with carbohydrate from fibre-rich foods such as whole grains, vegetables, fruit and pulses.

This is about the pattern across weeks and months. A meal containing coconut milk or cheese does not undo an otherwise balanced diet, just as adding olive oil cannot compensate for a consistently poor overall pattern.

What is different about coconut oil?

Coconut oil is high in saturated fat. It is often marketed as though it has the same properties as purified medium-chain triglyceride (MCT) oil, but coconut oil and MCT oil are not equivalent products. Claims made about isolated MCTs should not automatically be applied to normal servings of coconut oil.

A systematic review and meta-analysis of clinical trials found that coconut oil raised LDL cholesterol compared with non-tropical vegetable oils and did not produce meaningful improvements in body weight, body fat, blood glucose or inflammation. A later meta-analysis also found no significant reduction in body weight or waist circumference.

Does eating fat make you gain body fat?

No single macronutrient determines body-fat change on its own. Total energy intake, food quality, appetite, activity and consistency all contribute. Fat contains more energy per gram than protein or carbohydrate, so portions can matter, but that does not make dietary fat inherently “fattening”.

For weight management, build meals that are satisfying and repeatable. Include a suitable protein source, vegetables or fruit, a fibre-rich carbohydrate where appropriate, and a measured source of fat.

How to choose fats in everyday meals

  • Use olive, canola or other unsaturated oils for most everyday cooking.
  • Include nuts, seeds, avocado or oily fish regularly if they suit your preferences and dietary needs.
  • Use coconut oil for flavour where it fits the dish, rather than as a supplement.
  • Check the whole meal instead of judging one ingredient in isolation.
  • Adjust portions to your goals, appetite and total energy needs.

A practical nutrition plan is personal

The right balance of fats, protein and carbohydrate depends on your health history, training, food preferences, culture and goals. Aspire’s nutrition coaching in Bangkok turns those variables into an eating strategy you can use in real life, including local meals, restaurant choices and travel.

This article provides general nutrition education. Speak with a qualified clinician or dietitian for advice related to a medical condition, blood lipids, medication or individual dietary requirements.

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Written by

Dan Remon, founder of Aspire Coaching and PhysioDan Remon

Founder, Aspire Coaching & Physio

Thirty years coaching, twenty-four of them in Bangkok. Dan built Aspire so training, physiotherapy and nutrition run off one assessment and one plan.

ICF certified coach
TPI Level 2
Coaching in Bangkok since 2002

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