Millions of Americans can’t digest a certain sugar in milk and milk products called lactose. If you’re one of them, you have lactose intolerance. The condition isn’t harmful, but it can be uncomfortable and may be embarrassing. There’s no cure, but you can manage it by watching how much milk or milk
products you drink or eat. Being lactose intolerant is not the same as being allergic to milk. Lactose is the sugar that’s in milk. Our bodies use an enzyme called
lactase to break down that sugar so we can absorb it into our bodies. But people with lactose intolerance don’t have enough lactase. It’s produced in the small intestine. Even with low levels of lactase, some people can digest milk products just fine. For
people who are lactose intolerant, their low lactase levels gives them symptoms after they eat dairy. When we drink milk or have a milk-based product, lactase in our small intestines breaks down the milk sugar. It then gets absorbed into the body through the
small intestines. But people who are lactose intolerant don’t have it so easy. In them, the lactose doesn’t get broken down. Instead, it goes on to the colon, where it mixes with normal bacteria and ferments. It can cause things like
gas, bloating and diarrhea. The symptoms are no fun, but they’re not dangerous. Most people can manage their symptoms by changing their diet and limiting the amount of lactose they consume. Some people do better by cutting lactose out
of their diet altogether. Your body may be able to handle some lactose without symptoms. Experiment to find out the types and amounts of products with lactose you can eat and drink. There are some steps you can take to test yourself: What Is Lactose Intolerance?
What Is Lactose?
What Happens In My Body If I’m Lactose Intolerant?
Believe it or not, most adults around the world can’t digest milk -- 40% of humans stop producing enough lactase to digest milk between the ages of 2 and 5. In the United States, it’s estimated that just over one-third of people are lactose intolerant. It is most common among: It can also be inherited or associated with other specific diseases. Our bodies react to milk in ways that are easily measured. Two common tests for adults are:Who Develops It?
How Do I Know If I’m Lactose Intolerant?
- Breath test. This will show if you have high levels of hydrogen when you exhale. If you do, you might be lactose intolerant. That’s because hydrogen is given off when lactose is broken down in the colon. The hydrogen gets taken by the blood up to your lungs, and then you exhale it.
- Blood test. This can show how your body reacts after you drink something with a lot of lactose. However, this test is usually not done.
Doctors can also take a stool sample from babies and young children.
What If I Have It?
You may still be able to eat or drink small amounts of milk. Some people do better if they have their dairy with a meal. And, some dairy products, like hard cheese or yogurt, may be easier to digest.
Also, there are lots of lactose-free dairy products at the supermarket. Or you can take commonly found over-the-counter supplements (like Lactaid) to break down the milk sugars if you still want the real thing.
Talk to your doctor about a liquid lactase replacement. These are over-the-counter drops that you add to milk.
But if you give up milk completely, you can still get plenty of calcium, vitamin D and other nutrients in a healthy diet.
Instead of milk, you can substitute these foods:
- Almonds
- Dried beans
- Tofu
- Collards
- Kale
- Calcium-fortified orange juice and soy milk
- Fatty fish, like salmon, tuna and mackerel
- Egg yolks
- Beef liver
Always read labels. Many foods have lactose, including snack foods, bakery products, candy, dry mixes, dried vegetables, and infant formulas.Watch for Hidden Lactose
Many medicines also have lactose, which is used as a filler, especially in white tablets. Many birth control pills and medications used to treat gas and stomach acid contain lactose. Your doctor or pharmacist can let you know if any prescription medications you take contain lactose.
Some high-lactose foods to watch out for:
- Milk and heavy cream
- Condensed and evaporated milk
- Ice cream
- Cottage cheese
- Ricotta cheese
- Sour cream
- Cheese spreads
Some milk substitutes you could try:
- Soy milk. It’s high in protein, potassium and antioxidants
- Rice beverages
- Lactose-free milk. It’s high in calcium and protein and contains many other vitamins, such as A, B, and K, zinc, potassium and magnesium
- Almond milk
- Coconut milk
If you have symptoms of lactose intolerance, see your doctor. And if you’re diagnosed with it, talk with them about how to be sure you’re eating right.