If dairy has started leaving you feeling bloated or uncomfortable, you might be wondering: why is this happening now? Lactose intolerance is common and it can show up at different stages of life. The reassuring part is that it’s usually manageable, and it does not have to take over your routine or social life.
What is lactose?
Lactose is the natural sugar found in milk and dairy foods. To digest it properly, your body needs to split lactose into two smaller sugars, glucose and galactose, so they can be absorbed.
The key enzyme: lactase
That “splitting” job is done by lactase, an enzyme made in the small intestine. If you do not have enough lactase, lactose is not fully broken down. This is what we mean by lactose intolerance.
What happens when lactose isn’t digested?
When lactose isn’t properly broken down in the small intestine, it passes into the large intestine. Two things can then cause symptoms:
- Water is drawn into the bowel, which can contribute to loose stools or diarrhoea.
- Gut bacteria ferment the undigested lactose, which can lead to bloating, wind, stomach rumbling, and cramps.
Symptoms often appear within 30 minutes to a few hours after eating or drinking dairy, depending on the person and the amount of lactose.
Common symptoms of lactose intolerance
Symptoms vary, but the most common include:
- Bloating
- Excess wind
- Stomach cramps or discomfort
- Nausea
- Diarrhoea
Because these symptoms can overlap with other gut conditions (such as IBS), it’s a good idea to speak to your GP if symptoms are frequent or worsening.
Why do some people become lactose intolerant?
There are a few reasons lactose intolerance can develop:
Primary lactose intolerance
This is the most common type. Lactase production can naturally reduce as you get older. For some people, that change becomes noticeable in the teenage years or adulthood.
Secondary lactose intolerance
This can happen when the gut lining is temporarily affected, for example after a stomach bug, or alongside conditions such as coeliac disease or inflammatory bowel disease. Secondary lactose intolerance may improve when the underlying issue is treated.
Other (less common) causes
Lactase deficiency can also occur in pre-term babies (developmental) and very rarely as a congenital condition from birth.
Do you have to avoid dairy completely?
Often, no. Many people with lactose intolerance can tolerate some lactose, especially when dairy is eaten with a meal rather than on its own. Your tolerance level is personal, so it helps to learn what feels comfortable for you rather than removing dairy automatically.
How to manage lactose intolerance day to day
These simple steps can make a big difference:
1) Identify your personal tolerance
Try smaller portions and build awareness. A food and symptom diary for a week can help you spot patterns clearly.
2) Have dairy with other foods
Dairy is often better tolerated when eaten as part of a meal. Slower digestion can mean lactose reaches the gut more gradually.
3) Choose lower-lactose favourites
Some dairy foods are naturally lower in lactose or are often better tolerated, such as certain cheeses and yoghurt.
4) Check labels and hidden sources
Lactose can appear in processed foods and occasionally in medicines as a filler. If you’re very sensitive, your pharmacist can help you check.
Where Milkaid fits in
If lactose is the issue, you don’t have to remove dairy from your life. Milkaid contains lactase enzyme to support lactose digestion, helping you enjoy dairy more comfortably as part of everyday life.
- Milkaid Drops: treat the milk ahead of time, so the enzyme has time to break down the lactose before you drink or use it.
- Milkaid Tablets: convenient support for everyday dairy moments, chewable tablets with pleasant taste
- Milkaid MAX: extra support for bigger dairy moments when you want more reassurance, unflavoured capsules
When to speak to your GP
If symptoms are persistent, severe, or affecting your quality of life, it’s important to speak to your GP. Digestive symptoms can have more than one cause, and getting the right diagnosis helps you move forward with confidence.
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