Lactose is the name of the sugar found in milk. Lactose intolerance occurs when your body can't break down all the lactose in the foods you eat. Symptoms of lactose intolerance include:

• Diarrhea.
• Gas.
• Bloating.
• Stomach pain.
• Stomach cramps.

Lactose is found in dairy products, such as:

• Milk.
• Cheese.
• Yogurt.
• Ice cream.
• Sherbet.

Items on a food label that contain lactose include:

• Milk.
• Milk solids.
• Skim milk powder.
• Cream.
• Buttermilk.
• Malted milk.
• Whey lactose.
• Curds.
• Margarine.

Some foods that may have hidden sources of lactose include:

• Breads.
• Candies.
• Cookies.
• Cold cuts.
• Hot dogs.
• Bologna.
• Sauces and gravies.
• Dessert mixes.
• Cream soups.
• Frostings.
• Chocolate drink mixes.
• Salad dressings.

• Take small amounts. In most cases, you don't need to remove all dairy foods from your diet. You may be able to eat or drink small amounts of dairy products without having any symptoms. It can be helpful to keep a food diary. Keep track of what you eat and drink, and write down when you have symptoms. You may be able to eat yogurt or harder cheeses because they may have less lactose.
• Try lactose-free and reduced-lactose products. There are many lactose-free and lactose-reduced dairy products, including milk, ice cream, and cheeses. These can allow you to still enjoy dairy products. Ask your doctor or dietitian about these products.
• Take lactase enzyme supplements. These supplements are available over the counter. Taking the advised dose with your first drink or bite of a dairy product can help prevent symptoms. Talk with your doctor about these supplements. If you are taking other medicines, check with the pharmacist about possible medicine interactions before using any supplements.

Calcium and vitamin D are needed for strong bones and teeth. If you are not using milk or milk products, you may not be getting enough calcium and vitamin D from your diet. Ask your doctor or dietitian for more information about your body's calcium and vitamin D needs. Increasing your calcium and vitamin D intake through diet is best and gives many health benefits. If you can't, talk with your doctor about whether a supplement is right for you.

The following are good sources of calcium: