Dairy Sensitivity - Frequently Asked Questions

The inability to fully digest milk products (dairy sensitivity) affects more than 70% of all people. Both lactose and casein (milk protein) can be troublesome.


Frequently Asked Questions About Dairy Sensitivity


How common is Dairy Sensitivity?

Dairy sensitivity is increasing due to strong marketing of milk products - and the mass production of foods containing low-cost dairy derivatives.

A. Lactose: Recent evidence indicates that up to 75% of the world’s population is Lactose Intolerant to some extent*. That is, three quarters (¾) of all people have difficulty digesting lactose.

B. Casein: Other people (~ 3%) are allergic to Casein (the protein found in milk). This is usually detected in babies by projectile vomiting, colic or other troublesome conditions but can be undiagnosed till later.


Dairy sensitivity is responsible for symptoms like bloating, flatulence, diarrhea and Irritable Bowel Syndrome in millions of people and appears more frequently now that thousands of processed foods contain dairy derivatives. Heavily subsidised dairy farming now produces millions of tons of milk derivitives - delivering low cost ingredients for manufacturers.

To learn more – sign up for the free e-book ‘How To Tell If You have Food Intolerance’

What are the symptoms of Dairy Sensitivity?

A. Lactose sensitivity:

  • Nausea, diarrhea, bloating, flatulence, Irritable Bowel Syndrome
  • Malabsorption - nutrient deficiency like anaemia, bone density loss
  • Mood swings, depression

B. Casein allergy:

  • Common allergy symptoms like itchy skin, eczema
  • Leaky Gut - malabsorption: bone density loss, anaemia
  • Respiratory problems like coughing, asthma, sinusitis.

To learn more – sign up for the free e-book ‘How To Tell If You have Food Intolerance’


The symptoms of Dairy sensitivity can be confused with those of Fructose sensitivity and Gluten sensitivity, they all overlap. All food sensitivity symptoms - if left untreated - become worse with age.

How is Dairy Sensitivity identified?

A. Lactose: Some people get clinical tests including the Hydrogen breath test and stool acidity tests. Unfortunately most clinical testing for food sensitivity is not reliable. Breath tests are amongst the least trusted methods. However the Elimination Diet (Journal Method) easily identifies Lactose Sensitivity.

B. Casein allergy is often apparent with very young babies when they are first given cow's milk formula. But the sensitivity can remain undiagnosed until adulthood. Symptoms including hives, eczema, projectile vomiting, asthma, diarrhea and frequent infections like coughs and colds. The Detection Diet Journal as used in the Healing Program easily identifies casein sensitivity.


A. Lactose: Generally if gastro-intestinal symptoms are chronic (ie. you have had symptoms for a long time) then Lactose is a suspect - along with Gluten and Fructose. How do you know which one you have? Find out using the Healing Program.

B. Casein Milk protein allergy can easily be identified using a Journal.

How did I get Dairy Sensitivity?

A. Lactose: It’s all in the genes. If your ancestry is Northern European (eg. Dutch or Scandinavian) the chance of Lactose Sensitivity is only 25%. If not then generally you have a 75% chance of being Lactose Intolerant*.

B. Casein: Milk protein allergy is also an inherited gene.

Comments: If you are Dairy sensitive and have children - then you have already passed on the gentic material to them. Make sure you alert them to the possibility so they can make well-informed health choices.

Dairy sensitive people improve dramatically on a Dairy-free diet. But it's best to get accurate answers before changing your diet.

How is Dairy Sensitivity treated?

A. Lactose: The obvious and simple strategy for managing Dairy Sensitivity is to go Dairy-free. However because Dairy sensitivity has many of the same symptoms as Fructose sensitivity you need to keep some notes. Track how your symptoms improve (or not) on a changed diet - by using the Detection Diet Journal in the Healing Program.

B. Casein: Obviously a dairy-free diet is the answer. However for Casein there needs to be more vigilance as Casein is now included in thousands of processed foods. Get into the habit of reading labels for dairy and milk derivatives.

When will I be cured from Dairy Sensitivity?

Here at foodintol® we don't regard dairy sensitivity as a 'disease' - so it does not need to be 'cured'. It is an inability to digest cow's milk - because your body does not have the equipment to process it. After all, cow's milk is intended for the cow's offspring, the calf.

Solution: The symptoms and illnesses caused by dairy sensitivity disappear on a Dairy-free diet.  The Complete Guide to Dairy-free is included in the Healing Program.


I think I might have dairy sensitivity: What should I do?

Beginning with our free e-book, we can help you establish If you are suffering from gluten or wheat intolerance or if your symptoms indicate an intolerance to dairy, fructose or yeast. You may even be suffering from more than one food intolerance.

Research indicates that doing nothing can be a risk. Undiagnosed food intolerance can cause serious long-term health problems like osteoporosis, anaemia and many others.

To learn more – sign up for the free e-book ‘How To Tell If You have Food Intolerance’



All foodintol® information is based on research from peer-reviewed medical journals