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Milk, human, transitional

Transitional human milk is breast milk produced as early milk, known as colostrum, changes towards mature milk after birth. It mainly provides carbohydrate and fat, alongside protein and smaller amounts of vitamins and minerals. Per 100g, the supplied data show 281 kJ of energy, 3.7g of fat, 6.9g of carbohydrate and 1.5g of protein.

Fat and carbohydrate provide energy for an infant’s growth and development, while protein supports the formation and repair of body tissues. The main sugar in human milk is lactose. Breast milk composition varies between mothers and changes during lactation, so these figures describe a sample rather than every feed. Full nutrient figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

67 kcal

Energy

281 kJ

Fat

3.7g

of which saturates

1.5g

Carbohydrate

6.9g

of which sugars

6.9g

Protein

1.5g

Salt

0.08g

Alcohol

0g

Water

87g

Cholesterol

24mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin A (retinol equivalent)

91µg

Vitamin E

0.48mg

Vitamin C

6mg

Thiamin (B1)

0.01mg

Riboflavin (B2)

0.03mg

Niacin (B3)

0.1mg

Vitamin B6

Trace

Vitamin B12

0µg

Folate

3µg

Calcium

25mg

Iron

0.07mg

Magnesium

3mg

Phosphorus

16mg

Potassium

57mg

Sodium

30mg

Zinc

0.3mg

Copper

0.04mg

Selenium

2µg

Other types of milk

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Milk, human, colostrum

56 kcal

2g

2.6g

–

Milk, human, mature

69 kcal

1.3g

4.1g

0g

Milk, goats, pasteurised

62 kcal

3.1g

3.7g

0g

Milk, sheeps, raw

93 kcal

5.4g

5.8g

0g

Milk, soya, non-dairy alternative to milk, sweetened, fortified

43 kcal

3.1g

2.4g

0.5g

Milk, soya, non-dairy alternative to milk, unsweetened, fortified

26 kcal

2.4g

1.6g

0.5g

Milk, 1% fat, pasteurised

41 kcal

3.5g

1g

0g

Milk, Channel Islands, whole, pasteurised

72 kcal

3.5g

4.7g

0g

Milk, Channel islands, whole, summer

73 kcal

3.9g

4.7g

0g

Milk, Channel islands, whole, winter

72 kcal

3.2g

4.7g

0g

Milk, condensed, whole, sweetened

310 kcal

7.4g

8g

0g

Milk, evaporated, light

107 kcal

7.8g

4.1g

0g

Milk, evaporated, whole

166 kcal

8.4g

9.4g

0g

Milk, flavoured, pasteurised, chocolate

72 kcal

3.6g

1.5g

0g

Milk, flavoured, pasteurised, strawberry, banana

64 kcal

3.6g

1.5g

0g

Milk, semi-skimmed, pasteurised, average

46 kcal

3.5g

1.7g

0g

Milk, semi-skimmed, pasteurised, summer and autumn

46 kcal

3.5g

1.7g

0g

Milk, semi-skimmed, pasteurised, winter and spring

47 kcal

3.4g

1.7g

0g

Milk, semi-skimmed, UHT

46 kcal

3.3g

1.6g

0g

Milk, skimmed, dried, fortified

348 kcal

36g

0.6g

0g

About these figures

Values are per 100g of the food as described (Mixed sample, 15 mothers at 10th day post partum and literature sources). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Further reading and references

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 4 Nov 2026 | Latest version
  • 3 Nov 2026 | Originally published