Lactose Intolerant, But Why Give Up Dairy Products? It's Important, Especially for Women

Eliminating Dairy Products: The Most Common, and Often Wrong, Reflex

When diagnosed with lactose intolerance, the first reflex is often to clear out the kitchen of all dairy products. It feels reassuring. In most cases, this is also unnecessary, as long as it is properly lactose intolerance and not a milk protein allergy.

Symptoms depend on the amount of lactose ingested, in grams, not simply on the presence of a dairy product. This amount matters at each meal and, more broadly, throughout the day: the same amount is better tolerated when spread over several meals than when concentrated in a single intake. Many dairy products contain so little lactose that a normal serving stays well below what the body can tolerate.

Completely eliminating dairy products has a cost. Milk, cheese, and yogurt are among the most convenient sources of calcium, protein, and iodine in the European diet. For women, these nutrients matter at very specific times in life.

Why It Is Even More Important for Women

Bones, especially after menopause. The drop in estrogen at menopause accelerates bone loss and increases the risk of osteoporosis and fractures. Research on dairy products during this period leans in the same direction:

A meta-analysis of six randomized controlled trials (618 healthy postmenopausal women primarily receiving milk) showed that dairy products improved bone mineral density in the lumbar spine, femoral neck, and hip. The effect on the hip appeared after about a year, and it was strongest in countries where calcium intakes are low (Shi et al., 2020).
In the Nurses' Health Study, which followed about 103,000 American women for 24 years, those consuming at least two servings of dairy products daily had a 26% lower risk of fragility fractures than those who consumed less than one. Milk showed the clearest association, cheese a weaker one (about 11% lower risk with one serving per day), and yogurt none (Yuan et al., 2023).
A Finnish cohort of 14,220 women followed for 25 years from around age 52 showed that those who drank milk, fermented milk, or yogurt had fewer fractures than those who did not. The biggest difference was between no consumption and moderate consumption; drinking more provided almost no additional benefit. Cheese was only associated with fewer hip fractures (Alaghehband et al., 2025).

Not all studies align: several meta-analyses have found no clear link between dairy products and fracture risk, and a Swedish cohort even observed more fractures in high milk consumers. The research leans toward dairy products being beneficial, but it is not unanimous.

Iodine, during pregnancy and breastfeeding. Iodine needs increase during pregnancy and breastfeeding, and iodine is essential for the baby's brain development. A meta-analysis of 51 studies published in 2025, mainly focused on pregnant women, showed that those consuming more dairy products had better iodine status and about a 40% lower risk of deficiency. Milk showed the strongest link; cheese showed no significant link. Data during breastfeeding remain limited and contradictory, and the iodine content of milk varies greatly by country depending on cow feed (Razmpoosh et al., 2025).

Most of these studies are observational: they describe associations at the population level, not a dose for an individual woman. What stands out, particularly from the Finnish cohort, is that the biggest difference is between no dairy products and moderate consumption. This is exactly the situation of a lactose-intolerant woman who eliminates everything at the times in her life when she has the most to lose.

The Good News: You Can Regain More Than You Think

Cheese is the easiest way for lactose-intolerant individuals to reclaim ground: aging transforms most of the lactose into lactic acid, while calcium and proteins remain. This is the simplest starting point, not the complete answer, because the studies above point to milk and yogurt at least as much as cheese.

The numbers speak for themselves: 76% of the 133 AOC, AOP, and IGP protected cheeses in the European Union contain 0.5 g of lactose per 100 g or less.

Here's how to translate that into a portion. The lactose.help method follows three steps:

The product has a maximum lactose concentration, in g/100 g. This is indicated by the Lactoscore.
You have a tolerance threshold, in grams ingested per meal. By default, at least 1 g per meal.
The maximum portion is deduced by combining the two: max portion (g) = threshold (g) x 100 / max concentration (g/100 g).

Example: with a 1 g per meal threshold, a cheese with a Lactoscore B contains a maximum of 0.5 g / 100 g, so you can consume up to 200 g at that meal.

This portion uses the entire lactose budget for the meal and assumes no other sources. Lactose adds up: cheese, plus a cream sauce, plus milk in coffee, plus powdered milk hidden in a biscuit.

Why 1 g per meal? According to EFSA, most lactose-intolerant individuals tolerate 6 to 12 g of lactose per day, spread over three meals, while the most sensitive have symptoms from as little as 3 g per day. Three grams spread over three meals gives 1 g per meal: the threshold that works for everyone. This is a starting point, not a universal limit. The lactose challenge described in the book "Better Living with Lactose Intolerance" helps you find your own threshold, which may vary with fatigue and stress. You then recalculate your portions using the same formula.

These figures concern lactose intolerance, which is a lactase deficiency. They do not apply to milk protein allergy, which is an immune reaction.

For milk and yogurt, which are richer in lactose but most often linked to the bone and iodine results presented above, there are lactose-free versions, and the book explains how to make at home milk, cream, yogurt, mascarpone, butter, and cheese low in lactose, for about 25 euros of kitchen equipment purchased once.

One last reflex: recipes change without notice. A product that suited you last month may no longer suit you today. Check the label, or scan it again, every time.

Going Further for Your Women's Health: Fâmme

Lactose.help addresses a single topic: lactose intolerance. Women's health covers much more, from menstruation to menopause, and too many women still struggle to be heard. That is why Dorothée Dinne founded Fâmme in Brussels. This platform dedicated to women's health, currently in beta, brings together a network of verified health professionals (doctors, psychologists, physiotherapists, nurses) and wellness professionals, a community, and the Cycle Hub, an educational space offering evidence-based information on menstruation, endometriosis, and menopause. Its network currently focuses on Brussels and Wallonia, with ambitions to expand across Belgium and beyond. If you have a health question beyond lactose, during pregnancy, at menopause, or if you are unsure whether your symptoms come from lactose, talk to a health professional: Fâmme is a good place to find one. To learn more about the project, visit fammevisible.com.

Sources

The book "Better Living with Lactose Intolerance" has been reviewed by two dietitian-nutritionists. The lactose.help method has been validated by an accredited laboratory.

Alaghehband, F. R., et al. (2025). Long-term consumption of liquid dairy products predicts lower fracture risk in aging women: a 25-year follow-up. European Journal of Nutrition, 64. https://doi.org/10.1007/s00394-025-03709-7
Razmpoosh, E., et al. (2025). Dairy Intake and Iodine Status in Pregnant and Lactating Women: A Systematic Review and Meta-Analysis. Nutrients, 17. https://doi.org/10.3390/nu17233765
Shi, Y.-J., et al. (2020). Effects of dairy products on bone mineral density in healthy postmenopausal women: a systematic review and meta-analysis of randomized controlled trials. Archives of Osteoporosis, 15. https://doi.org/10.1007/s11657-020-0694-y
Yuan, M., et al. (2023). Types of Dairy Foods and Risk of Fragility Fracture in the Prospective Nurses' Health Study Cohort. The American Journal of Clinical Nutrition, 118, 1172-1181. https://doi.org/10.1016/j.ajcnut.2023.09.015