Why Do I Get Stomach Aches from Milk But Not Yoghurt or Ice Cream?

The symptoms you're experiencing when drinking milk but not when eating other dairy products like yogurt or ice cream can be linked to lactose intolerance or the specific composition of these dairy products.

Lactose Intolerance

Many people have difficulty digesting lactose, a sugar found in milk. When you drink milk, the lactose can ferment in the gut if your body doesn't produce enough lactase, the enzyme needed to break it down, leading to symptoms such as bloating, gas, and stomach pain. On the other hand, yogurt and some ice creams often contain live bacteria that help break down lactose, making them easier to digest for those with lactose intolerance.

The Role of Fat Content

Ice cream has a higher fat content than regular milk, which slows down digestion and might result in less discomfort. The fat in ice cream can also help buffer the effects of lactose, explaining why you might experience less pain with ice cream.

Fermentation and Probiotics

Yogurt is a fermented product that contains probiotics. These good bacteria can aid in digestion and might help you tolerate lactose better than with straight milk. The probiotics in yogurt can enhance its digestibility and its probiotic properties might also contribute to better digestion overall.

Portion Size and Digestive Comfort

The quantity you consume might also play a crucial role. If you drink a larger volume of milk compared to the amount of yogurt or ice cream, this could contribute to the discomfort. Yoghurt and ice cream typically have smaller volumes, which can be easier to digest in one sitting.

Genetic Factors and Lactase Production

There are two genes responsible for the production of lactase, the enzyme responsible for breaking down lactose. It's theoretically possible that one gene is working normally and the other is not, resulting in 50% production of the enzyme. This means that you can consume dairy products and digest the lactose in dairy products. However, in practice, the gene that is functional must have mutations, such as 50% functionality, leading to 25% of enzyme production. As a result, you might be able to tolerate dairy products in solid form or mixed in food but struggle with liquid dairy products like milk.

If you consistently experience pain after drinking milk but not with other dairy products, it might be beneficial to consult a healthcare professional for personalized advice and possible testing for lactose intolerance or other digestive issues. Diagnosing and managing lactose intolerance can help you find ways to enjoy dairy without discomfort.

Understanding more about lactose intolerance and the specific characteristics of different dairy products can help you make informed choices and improve your digestive health. Consider consulting a dietitian or nutritionist to create a meal plan that suits your needs and preferences.

For more information on lactose intolerance and digestive health, visit our Healthline article. If you have any other questions or need further guidance, feel free to reach out to a healthcare professional.