Condensed milk: more than half of it is sugar

A systematic review of 36 randomized trials found moderate-quality evidence that most adults with lactose intolerance tolerate 12 to 15 g of lactose. UK tables put 12.3 g of lactose in 3.5 oz (100 g) of sweetened condensed milk, though condensed milk itself was not among the foods tested. Lactose is the minor sugar here. The same 100 g holds 55.5 g of sugars, 43.2 g of it added sucrose, along with 310 calories and 290 mg of calcium, according to one UK composite sample. In the US survey database one fluid ounce weighs 1.3 oz (38 g), which at the UK values carries about 21 g of sugars. Malaysian adults averaged 30 g a day in a 2003 food frequency survey, about 16 g of sugar.

The numbers, per 3.5 oz (100 g)

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• UK sweetened condensed whole milk has 310 calories and 55.5 g sugars per 3.5 oz (100 g), of which 43.2 g is added sucrose and 12.3 g lactose. — CoFID 2021, Milk, condensed, whole, sweetened (code 12-520) Evidence E source
  Per 100 g: energy 310 calories; total sugars 55.5 g (sucrose 43.2 g, lactose 12.3 g); protein 7.4 g; fat 8.0 g (saturated 4.99 g); calcium 290 mg; water 29.1 g

What a real portion looks like

• In the US survey database one fluid ounce of sweetened condensed milk weighs 1.3 oz (38 g) and a cup 304 g, while an unspecified amount is coded as 19 g. — FNDDS Milk, condensed, sweetened (code 11220000) Evidence E source
  1 fl oz 38 g; 1 cup 304 g; quantity not specified 19 g
• Malaysian national survey data suggest adults eat on average 1.1 oz (30 g) of sweetened condensed milk a day, supplying about 16 g of sugar, mostly stirred into tea or coffee. — Malaysian adults, 2003 Malaysian Adult Nutrition Survey (food frequency questionnaire) Evidence C source
  30 g condensed milk/day, about 16 g sugar

What your body absorbs

• A systematic review of 36 RCTs found most adults with lactose intolerance tolerate 12 to 15 g of lactose, about the amount in 3.5 oz (100 g) of sweetened condensed milk. — People with lactose intolerance or malabsorption in randomized trials, 1967-2009 (n = 36 RCTs) Evidence A source
  12-15 g lactose (about 1 cup of milk) well tolerated by most adults; moderate-quality evidence

What it does to your health

• In an Indonesian RCT in undernourished toddlers, a daily 1171 kJ condensed-milk supplement with 12 mg iron for 12 months showed body weight effects at 2, 8 and 12 months against smaller supplements. — Undernourished children aged 12 and 18 months at enrollment on six tea plantations, West Java; 12 months (n = 136) Evidence B source
  Body weight effects at 2, 8 and 12 months in both cohorts; clearer in girls and the younger cohort; size not given in abstract
• Observational studies reviewed for WHO link higher sugar intake with more tooth decay, with caries lower when free sugars stay under 10% of energy. — 55 human studies (3 intervention, 8 cohort, 20 population, 24 cross-sectional), children and adults (n = 55 studies) Evidence C source
  42 of 50 child studies and 5 of 5 adult studies found at least one positive sugar-caries association

Safety, limits and interactions

• In a series of 20 children with hereditary fructose intolerance, 4 died, and the authors warn never to give sugared condensed milk for persistent vomiting before ruling out this disorder. — 20 infants and young children hospitalized with hereditary fructose intolerance (n = 20) Evidence D source
  Course severe in 11 and lethal in 4; sucrose (fructose) in sweetened products triggers the disorder
• A child with cow's milk contact urticaria also reacted on skin contact to commercial condensed milk and to milk heated to 80 C for 30 minutes. — One preschool child with contact urticaria to cow milk (n = 1) Evidence D source
  Contact sensitivity to whole, skim, condensed and heated milk, casein and lactalbumin

What people believe that the data does not support

• A review of Indonesian studies concludes sweetened condensed milk should not be given to children aged 1 to 3 as a growth food, a practice reported mainly in poor urban families. — Studies of young Indonesian children aged 1-3 years Evidence C source
  No study has measured long-term health effects of early condensed milk use

Who this works differently for

• In the same trial, the condensed-milk supplement raised 12-month-olds' daily energy intake by about 2931 kJ, against about 837 kJ in the smallest-supplement group. — Undernourished Indonesian children, 12-month-old cohort (n = 53) and 18-month-old cohort (n = 83) (n = 136) Evidence B source
  Daily energy intake increase: E about 2931 kJ, M about 1675 kJ, S about 837 kJ (12-month cohort)

The bottom line

Condensed milk has been tested as food for hungry children. In an Indonesian trial on six tea plantations in West Java, 136 undernourished children aged 12 or 18 months were randomized to a daily 1171 kJ supplement with 12 mg of iron or to smaller supplements of 209 kJ with iron or 104 kJ without. Body weight differed at 2, 8 and 12 months in both age groups, and the abstract does not give the size of the difference. In the younger cohort the large supplement raised daily energy intake by about 2931 kJ against about 837 kJ for the smallest. There, a condensed-milk supplement with added iron was a research tool for delivering energy to undernourished children, and the trial says nothing about feeding it to children who are not undernourished. That is a different thing from feeding it to ordinary toddlers. A review of Indonesian studies concludes that sweetened condensed milk should not be given to children aged 1 to 3 to promote growth, given its high sugar and limited nutritional value, and says the practice is reported mostly among poor urban families. Sugar and teeth point the same way. A review of 55 studies done for WHO, most of them observational, found with moderate-quality evidence that caries is lower when free sugars stay under 10 percent of energy. Condensed milk was not studied separately in it. We found no study of what long boiling, as in dulce de leche, does to the milk. Who should be careful. In a 1978 series of 20 young children with hereditary fructose intolerance, 4 died, and the authors warn never to give sugared condensed milk for persistent vomiting before this disorder is ruled out. Condensed milk is a cow's milk product. In one child with contact urticaria to cow's milk, commercial condensed milk and milk heated to 80 C for 30 minutes both still caused a reaction.

Sources

1. cndm-daily-r4-01 · dataset
   Milk, condensed, whole, sweetened, CoFID 12-520: Energy (kcal) 310; Total sugars (g) 55.5; Sucrose (g) 43.2; Lactose (g) 12.3; Protein (g) 7.4; Fat (g) 8.0; Satd FA /100g fd (g) 4.99; Calcium (mg) 290; Water (g) 29.1
   CoFID 2021, Public Health England, OGL v3.0 · checked 2026-09-29
2. cndm-daily-r4-02 · dataset
   Milk, condensed, sweetened, FNDDS 11220000, fdc_id 2705402: 1 cup 304 g; 1 fl oz 38 g; Quantity not specified 19 g
   USDA FoodData Central, FNDDS survey foods, release 2024-10-31 · checked 2026-09-29
3. cndm-daily-r4-08 · survey review
   Data from the 2003 Malaysian Adult Nutrition Survey (MANS) using food frequency questionnaires suggested that on average, Malaysian adults consumed 30 grams of sweetened condensed milk (equivalent to 16 grams sugar) and 21 grams of table sugar per day
   Asia Pac J Clin Nutr, 2016 · checked 2026-09-29
4. cndm-daily-r4-05 · systematic review of RCTs
   Moderate-quality evidence indicated that 12 to 15 g of lactose (approximately 1 cup of milk) is well tolerated by most adults.
   Ann Intern Med, 2010 · checked 2026-09-29
5. cndm-daily-r4-03 · RCT
   Two cohorts of children were randomly assigned to three treatments: E = 1171 kJ + 12 mg iron; M = 209 kJ + 12 mg iron; S = 104 kJ. Supplementation was given for 12 months. ... RESULTS: Body weight showed effects on both cohorts at 2, 8 and 12 months
   Eur J Clin Nutr, 2000 · checked 2026-09-29
6. cndm-daily-r4-06 · systematic review
   There is evidence of moderate quality showing that caries is lower when free-sugars intake is < 10% E.
   J Dent Res, 2014 · checked 2026-09-29
7. cndm-daily-r4-09 · case series
   They should never prescribe sugared condensed milk for intractable vomiting prior to excluding HFI.
   Helv Paediatr Acta, 1978 · checked 2026-09-29
8. cndm-daily-r4-10 · case report
   Contact sensitivity was documented to whole cow milk, skim milk, commercial condensed milk, and milk heated to 80 degrees C for 30 min.
   Allergy, 1987 · checked 2026-09-29
9. cndm-daily-r4-07 · critical review
   Considering its limited nutritional value and high sugar content, sweetened condensed milk (SCM) should not be administered to young children (1-3 years old) with the goal of promoting their growth and development. However, such false practice has been reported in mostly urban studies among the underprivileged population.
   Asia Pac J Clin Nutr, 2020 · checked 2026-09-29
10. cndm-daily-r4-04 · RCT
    For the 12-month-old cohort the mean increase in daily energy intake approximately 2931 kJ for E, approximately 1675 kJ for M, and approximately 837 kJ increase over the 6 months for the S group.
    Eur J Clin Nutr, 2000 · checked 2026-09-29