Raw Milk
Unpasteurized milk consumed for claimed benefits from intact enzymes, beneficial bacteria, and heat-sensitive nutrients destroyed by pasteurization
Bottom Line
Raw milk is one of the most polarizing topics in nutrition. Proponents claim it's a living food with enzymes, probiotics, and nutrients destroyed by pasteurization. Health authorities consider it a significant foodborne illness risk.
The evidence reality:
- Most claimed benefits lack rigorous scientific support
- Some observational studies suggest reduced allergies/asthma in farm children
- Lactase enzyme claims don't hold up - raw milk still problematic for lactose intolerant
- Real foodborne illness risk: CDC estimates 840+ illnesses/year from raw milk in the US
The nuanced view:
- Quality matters enormously - small farms with strict hygiene vs. industrial operations
- Risk tolerance is personal - healthy adults at lower risk than children, elderly, immunocompromised
- Legal status varies widely by state/country
If you choose to consume raw milk, source from trusted small farms with transparent testing, understand the risks, and avoid giving to vulnerable populations. For most people, high-quality pasteurized dairy from grass-fed sources provides similar nutrition with far less risk.
Science
What is Raw Milk?
Raw milk is milk that has not been pasteurized (heat-treated to kill pathogens). Pasteurization, developed by Louis Pasteur in the 1860s, heats milk to 72°C (161°F) for 15 seconds (HTST) or 63°C (145°F) for 30 minutes (batch).
Claimed Benefits vs. Evidence:
| Claim | Evidence |
|---|---|
| Intact enzymes aid digestion | Enzymes largely denatured by stomach acid anyway |
| Lactase helps lactose intolerance | Studies show no significant difference vs. pasteurized |
| Beneficial bacteria/probiotics | Present but highly variable; most destroyed by stomach |
| Higher vitamin content | Minor differences; B vitamins slightly higher in raw |
| Better protein quality | No significant difference demonstrated |
| Prevents allergies/asthma | Some observational support, but confounded by farm living |
The "Farm Effect" Research:
The most intriguing evidence comes from epidemiological studies of farm children: - GABRIELA study: Farm milk consumption associated with 41% lower asthma risk - PARSIFAL study: Similar protective associations - However, these studies can't separate raw milk from overall farm exposure (animals, microbes, outdoor time) - Boiled farm milk showed similar (slightly reduced) protection in some analyses
What Pasteurization Actually Changes:
- Destroyed: Most bacteria (beneficial and harmful), some enzymes
- Reduced: Vitamin C (~20%), some B vitamins (5-20%), whey protein denaturation
- Unchanged: Fat, minerals (calcium, phosphorus), casein protein, vitamin A, vitamin D
The Lactose Intolerance Question:
A Stanford RCT (MacDonald 2011) directly tested whether raw milk helped lactose intolerant individuals: - 16 lactose-intolerant adults - Compared raw milk, pasteurized milk, and soy milk - Result: No significant difference in symptoms between raw and pasteurized - The lactase enzyme in raw milk doesn't survive stomach acid
Microbial Content:
Raw milk contains diverse bacteria - both beneficial and potentially harmful: - Beneficial (variable): Lactobacillus, Bifidobacterium species - Potentially harmful: Campylobacter, Salmonella, E. coli O157:H7, Listeria - Bacterial load depends heavily on farm practices, animal health, and handling
Why Some People Report Benefits:
- Placebo effect (strong in nutrition research)
- Switching from industrial to higher-quality dairy overall
- Farm-fresh vs. weeks-old store milk
- A2 vs. A1 beta-casein (some raw milk comes from A2 cows)
- Individual microbiome differences
Supporting Studies
3 peer-reviewed studies
View all studies & compare research →Practical Protocol
If You Choose to Consume Raw Milk:
Sourcing (Critical):
- Only from farms you can visit and inspect
- Ask about testing protocols (should test regularly for pathogens)
- Understand the farm's hygiene practices
- Grass-fed, pasture-raised animals preferred
- Small herd size generally lower risk than large operations
Legal Considerations:
- Illegal to sell in ~20 US states
- Legal with restrictions in ~17 states (farm sales only)
- Legal retail sales in ~13 states
- Check your local regulations
Safe Handling:
| Practice | Reason |
|---|---|
| Keep below 40°F (4°C) | Slows bacterial growth |
| Consume within 7-10 days | Freshness critical |
| Use clean containers | Prevent contamination |
| Never leave out >2 hours | Rapid bacterial multiplication |
Starting Protocol:
- Start with small amounts (4-8 oz)
- Monitor for any digestive issues
- Source should provide batch testing results
- Build up gradually if tolerated
Who Should NOT Consume:
- Children under 5
- Pregnant women
- Elderly individuals
- Immunocompromised persons
- Anyone with chronic illness
Risks & Side Effects
Foodborne Illness Risk:
This is the primary concern with raw milk and it's real, not theoretical.
CDC Statistics (2007-2020):
- 202 outbreaks linked to raw milk/cheese
- 2,645 illnesses
- 228 hospitalizations
- 3 deaths
- Note: Actual numbers likely higher due to underreporting
Common Pathogens:
| Pathogen | Symptoms | Severity |
|---|---|---|
| Campylobacter | Diarrhea, fever, cramps | Usually self-limiting; can cause Guillain-Barré |
| Salmonella | Diarrhea, fever, vomiting | Usually self-limiting; severe in vulnerable |
| E. coli O157:H7 | Bloody diarrhea, cramps | Can cause kidney failure (HUS), especially in children |
| Listeria | Fever, muscle aches | Dangerous for pregnant women (miscarriage), elderly |
Vulnerable Populations at Highest Risk:
- Children: Immature immune systems, higher risk of severe E. coli complications
- Pregnant: Listeria can cause miscarriage, stillbirth
- Elderly: Weakened immunity, higher complication rates
- Immunocompromised: Unable to fight infections normally
Risk Context:
- Raw milk illness rate: ~840 times higher than pasteurized per serving
- Most illnesses are self-limiting in healthy adults
- Severe complications rare but can be life-altering (kidney damage, paralysis)
Signs of Contaminated Milk:
- Off smell or taste
- Unusual color
- Clumping or curdling before expiration
- When in doubt, discard
Who It's For
May Consider (With Full Risk Awareness):
- Healthy adults with no immune issues
- Those with direct access to trusted small farms
- People who accept and understand the risks
- Those in areas where it's legal and regulated
Not Recommended For:
- Children under 5 (CDC strongly advises against)
- Pregnant women
- Elderly individuals
- Anyone immunocompromised
- Those without access to quality-tested sources
- People seeking lactose intolerance relief (evidence doesn't support)
Better Alternatives for Most People:
- High-quality pasteurized grass-fed milk
- A2 milk (if A1 casein is the issue)
- Fermented dairy (kefir, yogurt) for probiotics
- Lactose-free milk for intolerance
How to Track Results
What to Monitor:
Digestive Response:
- Bloating, gas, cramping (especially first 1-2 weeks)
- Stool changes
- Any signs of foodborne illness
Warning Signs (Seek Medical Care):
- Fever over 101°F (38.3°C)
- Bloody diarrhea
- Diarrhea lasting >3 days
- Severe abdominal cramping
- Signs of dehydration
Source Quality Tracking:
- Request batch test results from farmer
- Note any changes in taste, smell, appearance
- Track which batches cause any issues
Timeline:
- Week 1-2: Adjustment period, minor digestive changes possible
- Week 2-4: Should be well-tolerated if going to work
- If issues persist beyond 2 weeks, raw milk may not be for you
Top Products
Sourcing Options:
Raw milk isn't typically available through major retailers. Finding quality sources:
Farm Directories:
- Real Milk Finder - Weston A. Price Foundation directory
- Local farmers markets
- Farm-to-consumer buying clubs
- Herdshare programs
What to Look For:
- Small herd size (<50 cows ideal)
- Grass-fed, pasture-raised animals
- Regular pathogen testing (ask for results)
- Clean, inspectable facilities
- Farmer willing to answer questions
Quality Indicators:
- Cream line visible (not homogenized)
- Clean, fresh smell
- Delivered/picked up cold
- Clear labeling with date
Alternative Products:
If seeking probiotic/enzyme benefits without raw milk risk: - Kefir - Fermented, probiotic-rich - Raw cheese (aged >60 days) - Aging reduces pathogen risk - Grass-fed A2 milk - Different protein, pasteurized
Cost Breakdown
Pricing (US, where legal):
| Source | Price Range |
|---|---|
| Farm direct | $8-15/gallon |
| Retail (where legal) | $12-20/gallon |
| Herdshares/cow shares | Varies (buy-in + monthly) |
Compared to:
- Conventional milk: $3-5/gallon
- Organic pasteurized: $6-10/gallon
- Grass-fed pasteurized: $8-12/gallon
Hidden Costs:
- Travel to farm (if not local)
- Herdshare buy-in ($50-500)
- Glass bottle deposits
- Time investment to find quality source
Cost-Benefit Consideration:
Given the lack of proven benefits over quality pasteurized milk and the added risks, the premium cost is hard to justify from a purely health perspective. Most value comes from supporting small farms and personal food philosophy.
Podcasts
Essentials: Science of Mindsets for Health & Performance | Dr. Alia Crum
Believing a milkshake is indulgent causes 3x greater ghrelin suppression than thinking it's...
225. Heal your gut with RAW MILK: a conversation with Mark McAfee from Raw Farm
Paul Saladino visits the largest raw dairy farm in the world, RAW Farm, to talk with Mark McAfee...
#241: Should You Exercise Before Sleep, What Is The Best Standing Desk, Why Your Big Toe Is Important And More!
Ben Greenfield and co-host Brock answer listener Q&A covering exercise timing for sleep,...
Raw Milk
Michael Hobbs and Aubrey Gordon trace the full history of raw milk in the United States, from...
Discussed in Podcasts
40 curated moments from top health podcasts. Click any timestamp to play.
Raw milk is the most healing food for the human gut
Paul Saladino calls raw milk the single most healing food he's seen for the human gut, based on both clinical reports and emerging research.
"I've not seen any food that is as healing, and I mean that word sincerely, healing for the human gut as raw milk."
Raw Farm is the world's largest raw milk dairy
Mark McAfee's Raw Farm in California's Central Valley is the world's largest raw milk dairy, setting the standard for safe raw milk production.
"Thanks for coming on the podcast. All the way, buddy. I think it's only appropriate that we start with cheers. Absolutely. Food of the ages. Food of the ages. What are we drinking? Kiefer. Raw milk kefir."
Raw milk was used at the Mayo Clinic to treat illness
Historically, clean raw milk from countryside farms was sent to the Mayo Clinic to heal patients, while contaminated city milk caused disease outbreaks.
"They call it, I think it's FOXOP3, or I can find the actual genetic loci that they talk about. But they talk about T cell maturation being affected by raw milk. And you think, okay, this is really, I can say this, but this is the kind of thing that the FDA won't let a raw milk farmer say."
Cross-species raw milk shaped the human genome
Domestication of animals exposed humans to raw milk for 10,000-15,000 years, contributing to our genome through cross-species consumption.
"So if you look at that, wire cross-species consumption of raw milk, domestication of raw milk has contributed to our genome for 10 or 15,000 years because we cohabitated so closely to these animals."
Raw milk is the first food of life that builds the gut
A newborn's digestive tract is unformed: no enzymes, no bacterial diversity, no mucosal lining. Colostrum and breast milk build it from scratch.
"What is the role of raw milk? It's the first food of life. A baby's born without a digestive tract that's fully formed. It doesn't make its own enzyme, doesn't have bacterial diversity, the mucosal lining is not there. What creates it?"
Raw milk increases microbial diversity in the gut
A 12-week interventional study showed raw milk consumption increased gut microbial diversity and short-chain fatty acid levels like valerate.
"If people are curious about this, and this goes back to what we were saying about the benefits of raw milk across species, there are peptides."
FDA blocks raw milk producers from stating health claims
Mark McAfee is under FDA injunction from making health claims about raw milk. Stating any healing benefit legally creates a 'new drug' under US law.
"I presented my slide deck to them. They said, there's no way you can give those slide decks. We can't give any nutritional benefits to raw milk."
Pasteurized milk cultures fail without native bacteria
Added cultures in pasteurized milk are displaced by residual bacteria in the processed product. Truly raw milk retains its full native microbial ecosystem.
"And that's quite a paradigm shift. So it's truly raw milk."
Ancestral humans ate whole animals and drank raw milk
Early humans consumed organs, brains, and raw milk from domesticated animals as foundational parts of their diet.
"Would have eaten the meat. We would have eaten the brain. We would have had raw milk. The American Indians did that. First thing they did would eat the organs. Would have had raw milk if we were smart enough to domesticate the animals. When fruit was in season, you bet we were eating a piece of fruit that was colorful and sweet."
Raw milk has 4% fat, cream 40%, butterfat 87%
The fat concentration ladder from raw milk to cream to butterfat shows how dairy products vary in their fat content.
"Raw milk obviously has four. Cream has 40. And butterfat has 87%."
Pasteurization is 165 degrees for 15 seconds
Josh explains that pasteurization simply heats milk to 165 degrees for 15 seconds and calls the anti-pasteurization movement dangerous, noting that the process is vilified despite being a straightforward safety measure.
"It's brought up to 165 degrees for 15 seconds, and it is vilified by people as though it is like this draconian method in which to like poison people. It's like, it is so on the level."
Nutritional losses from pasteurization are negligible
Ben and Josh agree that the nutritional differences between raw and pasteurized milk are minimal and not worth risking infection from dangerous pathogens.
"It's like, babe, you're getting a lot of good stuff. Like, it's a small discrepancy here. And we're talking about making it infinitely safer."
Who to Follow
Proponents:
- Weston A. Price Foundation - Primary advocacy organization
- Mark McAfee (Organic Pastures) - Largest raw milk producer
- Sally Fallon Morell - Author, Nourishing Traditions
- Paul Saladino, MD - Carnivore diet advocate
Skeptics/Critics:
- CDC - Consistently advises against raw milk consumption
- FDA - Prohibits interstate sale of raw milk
- American Academy of Pediatrics - Strongly recommends against for children
- Most food safety scientists and epidemiologists
Balanced Voices:
- Chris Kresser - Acknowledges risks, discusses quality sourcing
- Some functional medicine practitioners take nuanced positions
Synergies & Conflicts
If Consuming Raw Milk:
- Fermentation - Making kefir or yogurt from raw milk may reduce some pathogen risk
- Aging into cheese - 60+ day aging significantly reduces pathogens
- Quality fat-soluble vitamins - Pairs with grass-fed butter, cod liver oil
Alternative Approaches for Similar Goals:
- Gut health: Colostrum, fermented foods, bone broth
- Probiotics: Kefir, yogurt, probiotic supplements
- Nutrient density: Grass-fed pasteurized dairy, organ meats
- Enzyme support: Digestive enzyme supplements if needed
What Doesn't Help:
- Raw milk won't fix true lactose intolerance (take lactase enzyme instead)
- Won't provide meaningful probiotics if stomach acid is normal
- Not a substitute for addressing underlying gut issues
What People Say
What Advocates Report:
What Critics Point Out:
Reddit/Forum Sentiment:
The Reality:
Most people who drink raw milk don't get sick. But the ones who do can get very sick. Personal risk tolerance and access to quality sources are the deciding factors for most.