Nutritional Benefits of Raw Milk

Raw milk has attracted attention for its nutritional profile — one that differs in measurable ways from pasteurised milk. Here is what we know, what is debated, and where to draw the line between fact and marketing.

What Pasteurisation Changes

Pasteurisation is effective at killing harmful bacteria, but it also alters the milk:

  • Enzymes — Heat destroys enzymes like lactase (which helps digest lactose), lipase (which aids fat digestion), and phosphatase. Raw milk retains these in their active forms.
  • Vitamins — Pasteurisation reduces levels of heat-sensitive vitamins, particularly vitamin C (up to 20% loss) and some B vitamins. Fat-soluble vitamins A, D, E, and K are more heat-stable and survive largely intact.
  • Beneficial bacteria — Raw milk from healthy cows contains lactic acid bacteria and other microorganisms that may support gut health. Pasteurisation eliminates these along with harmful pathogens.
  • Proteins — Some whey proteins, particularly immunoglobulins and lactoferrin, are partially denatured by heat. Their bioavailability may be reduced in pasteurised milk.

Nutrients in Raw Milk

Raw milk is a whole food that provides:

  • Complete protein with all essential amino acids
  • Calcium and phosphorus for bone health
  • Vitamin B12, critical for nerve function and red blood cell formation
  • Vitamin A in its natural, bioavailable form
  • Omega-3 fatty acids, especially in milk from pasture-raised cows — grass-fed herds produce milk with a more favourable omega-3 to omega-6 ratio
  • Conjugated linoleic acid (CLA), a fatty acid associated with anti-inflammatory properties, found in higher concentrations in grass-fed milk

The Digestion Question

Many raw milk drinkers report easier digestion compared to pasteurised milk. Several factors may contribute:

  • Intact lactase enzymes may assist with lactose breakdown
  • A different protein structure (undenatured whey) may be gentler on the gut
  • The natural microbial community in raw milk may support digestive processes

It is worth noting that these observations are largely anecdotal. Clinical studies are limited, and individual responses vary significantly. People with a diagnosed lactose intolerance should approach raw milk cautiously and consult their healthcare provider.

A Balanced Perspective

Pasteurised milk is also nutritious. It remains an excellent source of calcium, protein, and most vitamins. The nutritional differences between raw and pasteurised milk are real but modest — they do not make pasteurised milk a poor food.

The case for raw milk is strongest when it comes from healthy, pasture-raised animals on farms with excellent hygiene practices. The nutrient profile of any milk — raw or pasteurised — depends heavily on what the animals eat, how they are raised, and how the milk is handled after collection.

We are not here to tell you that raw milk is a miracle food. We are here to give you honest information so you can decide what belongs on your family's table.