Energy
Fat provides 9 kcal per gram, making it the most energy-dense macronutrient.
Dietary Fats: Why the Body Needs Them
How fats provide energy, build cells and help the body absorb vitamins.
Educational guide · Reviewed 26 July 2026Why does the body need dietary fat?
Dietary fat provides energy, forms cell membranes and helps the body absorb vitamins A, D, E and K.
Dietary Fats
Food source · amount · everyday role
What it does for the body.
Cell structure
Fatty acids form part of cell membranes.
Vitamin absorption
Dietary fat helps absorb the fat-soluble vitamins A, D, E and K.
When to pay particular attention
Needs are not identical.
Age, life stage, activity and the rest of the diet can change what deserves attention.
- People comparing total fat with saturated fat
- People choosing between oily and lean fish
- Anyone building a balanced meal rather than avoiding all fat
Food first.
Fish, olive and rapeseed oils, nuts, seeds and avocado provide unsaturated fats. Butter, fatty meats and some tropical oils contain more saturated fat.
How do we measure it?
One value. Three useful views.
Per 100 g
A standard basis for comparing different foods and pack sizes.
Per serving
The quantity associated with a stated serving. Serving sizes can differ.
Per package
The calculated total when the entire package is the relevant amount.
We show where every number comes from.
Diplomats Product Nutrition
The value belongs to the exact product, recipe and measurement basis shown. We present it as the product’s number.
Reference Nutrition Data
A scientific food database provides a range for a comparable fish. We mark it with an asterisk and never present it as a laboratory result for the product.
Nutrition Knowledge
Primary health and food-science sources explain what a nutrient does, who should pay attention and how the number is used.
Why does the body need dietary fat?
Dietary fat provides energy, forms cell membranes and helps the body absorb vitamins A, D, E and K.
Why does dietary fats: why the body needs them matter?
Energy: Fat provides 9 kcal per gram, making it the most energy-dense macronutrient. Cell structure: Fatty acids form part of cell membranes. Vitamin absorption: Dietary fat helps absorb the fat-soluble vitamins A, D, E and K.
Can a value be assumed from the fish species?
No. Diplomats separates general food education from facts verified for a particular recipe, serving and product.
What does “per 100 g” mean?
It is a standard comparison basis. It lets visitors compare products of different pack and serving sizes using the same amount of food.
How are products recommended?
The Product Finder combines product nutrition, flavour, format and the preferences you select to find the closest match.
Primary health and food-safety sources used to review this guide.
Apply the knowledge.
Compare product nutrition on the same per 100 g basis and choose what suits your meal.
Compare product nutritionPut it on the table.
Explore serving ideas and practical meal contexts connected to Diplomats products.
Explore recipesSee the knowledge in practice.
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