Walnut
Values per 100 g — CIQUAL data (ANSES). Fibre: 6 g.
Photo: Pexels
Rich in plant omega-3s
The walnut is the nut richest in plant-based omega-3s (ALA): 65 g of fat per 100 g (698 kcal), with 15 g of protein and fibre. Very energy-dense, it is a distinctive healthy-fat source, useful for fat balance.
Its calorie density means measuring: a small handful is enough.
The portion, the key point
A handful (~30 g, i.e. 4-5 whole halves) provides healthy fats for ~200 kcal. When bulking, it easily enriches a meal; when cutting, measure it as calories climb fast.
How to use them
Crushed over a porridge, fromage blanc or salad, it adds crunch, omega-3s and satiety. Preferably plain, with no added salt or sugar.
ALA vs fish omega-3: the nuance
The walnut's omega-3 is ALA, a plant omega-3. The body converts it into EPA and DHA (the active forms found in oily fish), but with low efficiency. In other words, the walnut is a good healthy-fat source, but it does not fully replace oily fish for omega-3s.
It stays valuable, especially in vegetarian eating: combine it with other ALA sources (flaxseed, rapeseed) and, if you do not eat fish, an algae-based omega-3 supplement can top up EPA/DHA.
What to pair it with
Walnuts top up a porridge, a dairy or a salad.
Key takeaways
- 65 g fat per 100 g including plant omega-3s (ALA): very caloric.
- A handful (~30 g) = ~200 kcal: measure the portion.
- Perfect crushed over porridge, dairy, salad.
- Plain, with no added salt or sugar.
Frequently asked questions
Are walnuts good for muscle building?
Yes, in a measured portion: they provide healthy fats and plant omega-3s, but they are very caloric — a handful is enough.
How many walnuts per day?
A handful (~30 g) is a reasonable portion that provides healthy fats without blowing up calories.
Do walnuts replace fish for omega-3s?
Not entirely: walnuts provide ALA (plant omega-3), which the body converts poorly into EPA/DHA, the forms found in oily fish. It is a good complement, not a full substitute. Without fish, consider flaxseed and an algae omega-3.
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