Dairy, Friend, Foe, or Frienemy?

Few foods spark more debate than dairy. For centuries, milk, yogurt, and cheese have played starring roles in traditional diets around the world, prized for their calcium, protein, and—let’s be honest, their ability to make food taste really good.

Yet in today’s nutrition conversations, dairy often finds itself in the hot seat. Is it inflammatory? Hard to digest? Something everyone should avoid?

As with most things in nutrition, the real answer is far less dramatic: it depends.

What the Research Actually Says

From a scientific perspective, dairy is a nutrient-dense food. It provides:

• Complete protein
• Calcium
• Phosphorus
• Iodine
• Potassium
• Vitamin B12

These nutrients support bone health, muscle maintenance, and metabolic function. Large population studies consistently show neutral, or even protective, associations between dairy intake and cardiovascular disease and type 2 diabetes. For most healthy individuals, dairy is not inherently inflammatory.

That said, not all dairy is created equal. The type of milk matters more than most people realize.

Cow’s vs. Goat’s vs. Sheep’s Milk

Same category, very different experiences

Cow’s Milk

The most common option and a reliable nutritional workhorse. Cow’s milk is rich in high-quality protein and calcium. However, it’s also higher in lactose and typically contains both A1 and A2 beta-casein proteins. For some individuals, this combination can contribute to digestive discomfort, though many people tolerate it just fine.

Goat’s Milk

Often easier on digestion, goat’s milk is actually the most consumed dairy globally (yes, it’s literally the GOAT). Compared to cow’s milk, it contains:

• Slightly less lactose
• Smaller fat globules, which are easier to digest
• Naturally occurring A2 beta-casein

Nutritionally, goat’s milk is comparable to cow’s milk, with slightly higher levels of magnesium and potassium. If you haven’t tried Redwood Hill Farm Goat Milk Yogurt, it’s a standout example of how creamy and satisfying goat dairy can be.

Sheep’s Milk

Harder to find, but incredibly nutrient-dense. Sheep produce far less milk per day, making this “liquid gold” especially rich in:

• Protein and calcium
• Zinc and selenium
• Healthy fats and fat-soluble vitamins

Because it’s so concentrated, sheep’s milk cheeses and yogurts tend to be deeply satisfying, even in smaller portions.

A1 vs. A2 Dairy: The Protein Puzzle

The A1 vs. A2 conversation centers around beta-casein, one of the primary proteins in milk.

• A1 beta-casein, found primarily in conventional cow’s milk, may produce a peptide during digestion that can contribute to GI discomfort in some individuals.
• A2 beta-casein, found naturally in goat’s and sheep’s milk (and specialty A2 cow’s milk), appears to be better tolerated by some people.

The key takeaway? Responses to A1 and A2 dairy are highly individual. Research is ongoing, and bio-individuality always wins. Listening to your body matters more than following a blanket rule.

Fermented Dairy: Where the Science Shines

If there’s one area where research is consistently positive, it’s fermented dairy.

Yogurt, kefir, skyr, and aged cheeses offer benefits beyond fresh milk because fermentation:

• Breaks down lactose
• Produces bioactive compounds
• Introduces beneficial bacteria that support gut health

This is why many people who believe they “can’t do dairy” often tolerate fermented dairy without issue.

Inflammation & Digestion: Clearing Up the Confusion

Dairy’s relationship with inflammation is frequently misunderstood—and highly individualized.

Current research shows that in healthy individuals:

• Dairy is not inherently inflammatory
• Certain components (like whey protein, calcium, and bioactive peptides) may even have anti-inflammatory effects

However, dairy can cause digestive symptoms for people with:

• Lactose malabsorption
• Milk protein sensitivity
• Compromised gut health (IBS, IBD, post-infectious gut issues)

A quick reality check: approximately 68% of the global population has lactose malabsorption. In the U.S., about 36% of people are affected. Lactose malabsorption is largely influenced by genetics and ancestry, it’s not a flaw or a failure.

A helpful rule of thumb: too much of any one food can cause distress. If dairy is a staple at every meal and you’re experiencing discomfort, reducing the volume may be a practical first step. And as always, consult your healthcare provider before making significant dietary changes.

The Takeaway

Dairy doesn’t need to be demonized, and it doesn’t need to be forced.

A smart, evidence-based approach looks like this:

• Dairy can be a valuable source of protein and micronutrients
• Fermented dairy is often the most gut-friendly option
• Type, quality, and preparation matter more than blanket eliminations

Nutrition isn’t about fear, it’s about informed choices and flexibility.

Have you experimented with giving up dairy, switching to A2, or incorporating more fermented options? Did you notice a difference? I’d love to hear your experience.

With health (and cheese),
Chef Mandy 🧀