The unsaturated fats in nuts are the “good fats” nutrition guidance encourages you to eat in place of saturated and trans fats. Most nuts are mainly unsaturated fat, split between monounsaturated and polyunsaturated types. Here is what those labels mean, which nuts lean which way, and how to enjoy them sensibly.
What are unsaturated fats?
Unsaturated fats are fats that are usually liquid at room temperature and come mostly from plants, nuts, seeds and fish. Chemically, their carbon chains have one or more double bonds, which is what “unsaturated” refers to.
The Harvard T.H. Chan School of Public Health groups them as the beneficial fats, in contrast to saturated fat (found in butter, ghee and fatty meat) and industrial trans fat. That is where the everyday phrase “good fats” comes from.
Monounsaturated vs polyunsaturated fat: what is the difference?
Monounsaturated fat has one double bond in its chain, while polyunsaturated fat has two or more. Both count as unsaturated, and most nuts contain a mix of the two.
- Monounsaturated fat: the main fat in macadamias, cashews, almonds and pistachios.
- Polyunsaturated fat: the main fat in walnuts, sunflower seeds and pumpkin seeds. This group includes omega-3 and omega-6 fats.
- Saturated fat: present in small amounts in all nuts, but rarely the main type.
Which nuts are highest in good fats?
Almost every nut is high in unsaturated fat; what changes is the type. Pick by taste and how you will use them rather than chasing one “best” nut.
Walnuts: the omega-3 nut
Walnuts stand out because they contain alpha-linolenic acid (ALA), a plant omega-3 fat. Harvard’s omega-3 guide lists walnuts among the main plant sources. Our USA Raw Walnut (from RM17.02) works in oats, salads and baking.
Macadamias: rich and buttery
Macadamias are among the highest in monounsaturated fat, which gives them their creamy, buttery bite. A few go a long way, so Roasted Macadamia Kernel (from RM23.26) suits slow snacking more than handfuls.
Mixed nuts: a bit of everything
A mix gives you both fat types in one portion. Omega Mixed Nuts (from RM29.63) is an easy pick for the office drawer. If you are torn between single nuts, see our cashew vs almond vs pistachio comparison.
Why do dietary guidelines favour unsaturated fats?
Guidelines favour unsaturated fats because they suggest swapping them in for saturated and trans fats, not simply adding more fat. The WHO healthy diet guidance recommends shifting fat intake towards unsaturated sources such as nuts, fish, avocado and vegetable oils.
In practice, that means a handful of nuts instead of a buttery pastry or a deep-fried snack, as part of a balanced diet. Nuts are also a source of protein and fibre, which is why they tend to feel more satisfying than chips.
How to enjoy good fats in nuts every day
- Keep the portion small. Nuts are energy-dense, so about 30g, a small handful, is a sensible everyday serving. Our nut serving size guide shows what that looks like.
- Choose unsalted where you can. Plain roasted or raw nuts let you enjoy the fats without extra salt.
- Store them cool and sealed. Unsaturated fats can turn rancid faster in Malaysian heat and humidity. Use an airtight jar away from the stove, and refrigerate walnuts once opened.
- Fit them into meals. Sprinkle walnuts on oats at breakfast, add a few macadamias to a fruit plate, or swap the 4pm kuih for mixed nuts.
A quick allergy reminder: nuts are a common allergen. If you are sharing snacks at the office or a gathering, label them clearly.
FAQs
Are the fats in nuts good for you?
Most of the fat in nuts is unsaturated, the type guidance encourages in place of saturated fat. Enjoyed in sensible portions as part of a balanced diet, nuts are a practical everyday source of good fats.
Which nut has the most unsaturated fat?
Macadamias and pecans are among the richest in total unsaturated fat, mostly monounsaturated. Walnuts are the standout for polyunsaturated fat and plant omega-3.
Do roasted nuts lose their good fats?
Roasting does not turn unsaturated fat into saturated fat, so the overall fat profile stays similar. Store roasted nuts airtight, as they can go stale a little sooner.
How many nuts should I eat a day?
About 30g, roughly a small handful, is a common everyday serving. If you have a health condition, check with your doctor or dietitian for advice that suits you.
Are walnuts a good source of omega-3?
Walnuts are one of the few nuts with a meaningful amount of ALA, a plant omega-3 fat. It is a different form from the omega-3 found in oily fish.
Ready to stock up on good fats? Browse walnuts, macadamias and mixes in our Premium Selection Nuts range.
