Raw milk risks

Overview

Raw milk is milk that has not been pasteurized, meaning it has not been heated to kill harmful germs. Drinking it can cause serious food poisoning because it may contain bacteria like Salmonella, E. coli, and Listeria.

In many countries, raw milk is not commonly sold because pasteurization is a standard safety step. However, some people choose raw milk from farms or special markets.

Anyone who drinks raw milk can get sick, but young children, pregnant women, older adults, and people with chronic illnesses or weak immune systems are most at risk for severe complications.

Symptoms

Common symptoms

• Diarrhea (sometimes watery or bloody)
• Stomach cramps
• Nausea and vomiting
• Fever

Symptoms in children

• Diarrhea that can quickly lead to dehydration (dry mouth, few tears, less urine)
• High fever
• Vomiting that makes it hard to keep fluids down

Symptoms in older adults

• Severe diarrhea causing dehydration
• Fever with confusion or weakness
• Kidney problems (less urine, swelling)

Causes

Main causes

• Drinking raw milk that contains harmful bacteria such as Campylobacter, E. coli, Salmonella, or Listeria.
• These bacteria come from the cow's manure or environment and can get into the milk if it is not pasteurized.

Risk factors

• Choosing raw milk over pasteurized milk
• Buying milk directly from farms or farmers' markets that offer unpasteurized products
• Having a weakened immune system (e.g., from cancer treatment, organ transplant, or chronic illness)

When to see a doctor

See a doctor urgently if:

• If you have bloody diarrhea or high fever
• If you show signs of dehydration (little urine, dry mouth, dizziness)
• If you are pregnant, very young, or elderly and have any symptoms after drinking raw milk

Book a routine appointment if:

• If you have mild diarrhea or stomach cramps that last more than a few days
• If you are unsure whether your symptoms need medical attention — calling your doctor's office is always safe

Diagnosis

A doctor will ask about your symptoms and whether you drank raw milk. They may order a stool test to find the specific bacteria causing the infection.

Tests that may be done

• Stool culture (sending a sample of your stool to a lab to check for bacteria)

What to expect at your appointment

The doctor will check your temperature and blood pressure, look for signs of dehydration, and may collect a stool sample. You will be given advice on how to manage your symptoms at home or if you need further treatment.

Treatment

Treatment focuses on replacing lost fluids and resting your stomach. Most people get better on their own. In some cases, antibiotics may be needed, but they are not used for all types of infection.

Self-care at home

• Drink plenty of clear fluids like water, broth, or oral rehydration solution (available at pharmacies without a prescription)
• Rest your stomach by eating small amounts of bland foods like toast, rice, or bananas
• Avoid dairy products, caffeine, and greasy foods until you feel better

Medical treatments

For severe infections, a doctor may prescribe antibiotics (only if the specific bacteria are sensitive to them). In hospital, you may receive fluids through a vein (IV) to prevent dehydration. No specific drug names or doses are recommended here.

When is surgery considered?

Surgery is not needed for food poisoning from raw milk.

Living with this condition

During the illness, rest as much as possible and stay close to a bathroom. Keep a water bottle handy and sip fluids often. Wash hands carefully after using the toilet.

Lifestyle tips

• Practice good hand hygiene: wash hands with soap and water after using the toilet and before eating
• Avoid preparing food for others while you are sick
• Wait until you have fully recovered before returning to work or school (your doctor can advise)

Diet and exercise

Stick to a gentle diet: clear liquids, then bland foods as you improve. Do not exercise or do strenuous activity until you are back to eating normally and feeling energetic.

Mental health and emotional wellbeing

Being sick with food poisoning can be stressful and uncomfortable, but remember that most people recover fully. If you feel anxious about your health, talk to your doctor or a trusted friend.

Prevention

Yes. The best way to prevent illness from raw milk is to choose pasteurized milk and dairy products. Pasteurization kills harmful germs while keeping the milk's nutrients.

Vaccines

There is no vaccine to prevent infection from bacteria in raw milk.

Screening programmes

There is no routine screening test for raw milk infections. Prevention is the main approach.

Complications

If left untreated

• Severe dehydration requiring hospital care
• Kidney failure (especially from E. coli O157 infection)
• Blood infection (sepsis) that can be life-threatening

Long-term outlook

With proper care, most people recover completely within a week or two. However, infections can be serious in vulnerable groups. Early medical help greatly reduces the risk of complications. Choosing pasteurized milk is a simple step to stay safe.

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