You’ll want to be careful when buying foods fortified with extra nutrients and dietary supplements because they can compromise your health.

Fortified foods, including cereal, orange juice, pasta, bread, protein drinks and snack bars are all readily found on the shelf at your neighbourhood supermarket. But Consumer Reports warns, while there can be benefits to these products, consumers should be aware of the potential of having too much of a good thing.

Take calcium, for example. The daily recommended amount for adults is 1,000 to 1,200 milligrams. Start your morning with a bowl of Total Whole Grain cereal and if you’re an adult, you’ve already ingested 100 percent of your daily calcium needs - and that’s without the milk. Add the milk and pop a daily dose of a calcium supplement and you’ve doubled the amount of calcium your body needs. Too much supplemental calcium can increase your risk for kidney stones.

Too much iron is another concern, Consumer Reports cautions. A bowl of Kellogg’s Product 19 has 18 milligrams and plenty of other foods are fortified with iron, so you could be getting more than you think. Too much increases the risk of diabetes and heart problems and can cause other serious health issues. Most healthy adults need just 8 milligrams per day: women under 51 need 18 milligrams, and pregnant women need 27 milligrams

And keep an eye on folic acid, a synthetic form of folate. Most healthy adults who aren’t pregnant need just 400 micrograms of folic acid or folate per day. Overdoing it can hide the symptoms of a vitamin B12 deficiency in people over 50.

Consumer Reports says you don’t need to avoid fortified foods altogether, but it’s a good idea to check labels. And unless your doctor recommends a dietary supplement or vitamin, the organization says it might be best to skip them.

The good news? Consumer Reports says most adults in North America already get enough of these nutrients without eating fortified foods or taking dietary supplements.

Turn to dark leafy greens for calcium, iron, and folate. Many foods are a good source of calcium, including milk cheese, and yogurt. Red meat is also rich in iron.