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Maryann Jacobsen

Independent Author & Family Nutrition Expert

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Fortified Foods: The Good, The Bad and The Useless

August 12, 2014

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You’re at the grocery store and you have the choice to buy regular orange juice or the kind with added calcium and vitamin D. Should you do it? How about that milk with DHA for your toddler? In today’s world, it seems every food item has some nutrient added to it to make us healthier. But does it really work?

The truth is fortified foods can be helpful, depending on the circumstances, but there are also some “watch outs.” So let’s get to the nitty gritty of the world of fortified foods, and whether or not they are for you and your family.

The Dawn of Fortification — Disease Prevention

In the first half of the 20th century, food fortification was the major defense for eliminating diseases such as goiter, beriberi, rickets and pellagra. By 1924, iodized salt became commonplace after it was found that iodine deficiency (enlarged thyroid gland) led to goiter. In the 1930’s vitamin D was found to prevent the terrible disease of rickets (brittle bones), followed by its addition to milk.

During this same time in history, the trend of using refined flours stripped of their B vitamins led to pellagra with its 4 D symptoms (diarrhea, dermatitis, dementia and death) and the neurological disorder of beriberi. In 1941, a standard of identity was developed for enriched flour to include the B vitamins thiamin, niacin and folic acid and iron. More recently (1998), folic acid fortification was added to this list to help prevent the development of neural tube defects.

All of these voluntary fortification programs worked to eliminate (or reduce) key health issues. It’s important not to forget these lessons. For example, rickets has made a comeback with new cases jumping from 183 in 1995 to 762 in 2011. If we choose not to eat something like iodized salt or foods that contain vitamin D, for example, we need to make sure we get those nutrients somewhere else (see list of foods that contain iodine).

grocery

The Explosion of Fortification — Filling Nutrition Gaps

In recent years food fortification has exploded beyond the “prevent disease” strategy. According to the FDA, the addition of a nutrient to a food may be appropriate if it corrects a dietary insufficiency, restores the level of the nutrient lost during processing or storing, helps balance vitamin, mineral and protein content or is used to replace a traditional food (i.e., meal replacements).

The result? Many foods are fortified from cereals to snack bars to orange juice. According to a large study in the Journal of the Academy of Nutrition and Dietetics, fortified food helps children get closer to usual intakes for key nutrients, especially older kids. For example, just over 10% of 2 to 8 year olds fell short on iron with food alone, but this dropped to less than 1% with fortified foods. And 60% and 51.8% of females (14-18) failed to get usual intakes of vitamin C and iron from food alone, but this dropped to 44.8% and 11.5%, respectively, with fortified foods.

But there are certain populations, especially young children, at risk for getting too much of certain nutrients due to fortification and supplements. According to an Environmental Working Group (EWG) report, many cereals and snack bars are fortified at levels too high for young children. In particular, they point to intakes above the Institute of Medicine’s tolerable upper level in vitamin A, zinc and niacin. Other studies find folic acid of concern, especially for 2 to 8 year olds who take supplements on top of fortified foods.

Everyone should read labels and understand all the sources of nutrients their family members are getting, especially before adding a multivitamin to the mix. To avoid excess intake, the EWG recommends

“parents give their children products with no more than 20-to-25 percent of the adult Daily Value for vitamin A, zinc and niacin and monitor their children’s intake of these and other foods so kids do not get too much of these nutrients.”

Even with Fortification We’re Still Missing Nutrients

According to a 2012 study in The Journal of Pediatrics, even among supplement users, children had below recommended intakes for calcium and vitamin D. A 2014 study in the Nutrition Journal revealed that adults get a daily average of 73mg of the omega-3 fatty acids DHA and EPA combined, which is a far cry from the 250mg that two servings (about 8 ounces) of fish provides. And kids aged 2-18 get only 40-45mg of DHA and EPA while the recommendations range from 100-250mg, depending on age.

Is fortification the answer? Well the problem is it’s tough to get the amount needed into food. For example, one mom buys DHA-fortified milk for her toddler who drinks two 4-oz glasses a day. She thinks her non-fish eating daughter is set for DHA but each cup has 32g so she’s only getting less than half the recommended amount (and none of the other fatty acid EPA). The recommended amount of vitamin D is 600IU with most fortified products, like milk, containing about 100IU per serving. So this young girl is hardly meeting the recommended amount of vitamin D. In cases like these, instead of relying on fortified foods that don’t meet needs, it makes sense to supplement.

So it comes down to this: try to eat and feed your family the best diet possible, use fortified foods wisely (and strategically), and supplement not as an insurance policy, but to fill real gaps in the diet.

Do you buy fortified foods for your family?

References

Dietary Reference Intakes: Guiding Principles for Nutrition Labeling and Fortification (2003)

Parliment UK (Rickets) 

Berner et al. Fortified foods are major contributors to nutrient intake in the diets of US children and adolescents.  Journal of the American Academy of Nutrition and Dietetics. Published online January 27, 2014.

Sacco JE, Dodd KW, Kirkpatrick SL, Tarasuk V. Voluntary food fortification in the United States: potential for excessive intakes. Euro J of Clinical Nutrition. 2013 Jun;67(6):592-7.

Environmental Working Group Report: How Much is too Much? Excess Vitamins and Minerals in Foods Can Harm Kids’ Health (2014)

Bailey et al. Do dietary supplements improve micronutrient sufficiency in children and adolescents? J Pediatrics. 2012; 161(5):837-42.

Papanikokaeou Y, Brooks J, Reider C, Fulgoni. US adults are not meeting recommended levels for fish and omega-3 fatty acid intake: results of an analysis using observational data from NHANES 2003-2008. Nutrition Journal. 2014; 13:31.

Harika et al. Fatty acid intakes of children and adolescents are not in line with the dietary intake recommendations for future cardiovascular health: a systematic review of dietary intake data from thirty countries.  Br J Nutr. 2011; 106(3)307-16.

 

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Categories: Nutrition Reports 7 Comments

« Monthly Meal Plan (August)
Why I Will Never Lie to My Children About Food »

Comments

  1. Jaime says

    August 12, 2014 at 10:49 am

    The forms of vitamins and minerals used to fortify foods are often cheap and ineffective (not highly absorbable). Therefore, you can’t rely on fortified foods. Plus, fortified foods are highly processed and often loaded with other harmful ingredients such as refined grains, sugar, hydrogenated fats and damaged vegetable oils. Even if the vitamins and minerals were absorbable, the risks outweigh the benefits. Our kids need to be eating more real, whole foods to get the nutrients they need and high quality supplementation should be used to fill in the gaps.

    Reply
    • Maryann Tomovich Jacobsen, MS, RD says

      August 13, 2014 at 4:58 pm

      Thanks for your comment Jaime. While I agree that the best way to get nutrients into kids is through whole foods, fortified foods can play a role and not all are unhealthy. For example, milk is fortified with vitamin D and non dairy alternatives (almond, soy milk etc.) add calcium (and they are absorb-able). Whole grain cereals, especially those for infants who need extra iron due to high growth (14% are deficient). And eggs can be enriched with omega-3 fatty acids. I don’t believe fortified foods are all good or all bad, just one option for helping people meet their needs.

      Reply
      • James D. says

        September 10, 2015 at 7:50 am

        It’s been known since at least the 1930s that copper is required to absorb iron.

        http://jama.jamanetwork.com/article.aspx?articleid=252769

        Copper is required for iron efflux. Refined and fortified foods do not include copper, and Americans have very low copper intakes.

        http://pmid.us/11481413

        So low iron deficiency anemia can be due to low copper intakes. We evolved for millions of years without fortification and now live in one of the most iron-replete fortified nations on the planet—iron levels in the food supply have doubled since the early 1900s, according to the UDSA. If people are still having trouble absorbing iron, then there is something else going on because we certainly do not have a shortage of iron in our food supply where all white flour is mandated to contain iron fortification.

        Reply
  2. Dave S. says

    July 9, 2015 at 7:43 am

    Iron fortification may be a problem as well. Iron overload has been linked to obesity, diabetes, heart disease and cancer:

    http://chriskresser.com/iron-behaving-badly-the-role-of-iron-overload-in-metabolic-disease/

    http://freetheanimal.com/2015/06/enrichment-theory-everything.html

    Reply
    • James D. says

      September 10, 2015 at 7:37 am

      Agreed. Countries that fortify their foods have significantly more chronic disease than the countries that don’t fortify. Some countries in Europe, such as Denmark and Sweden, have even banned fortified foods due to health concerns with iron overload. Disturbance of iron homeostasis is linked to virtually every chronic disease known—from cancer to diabetes and obesity.

      The problem with iron supplementation is that it seems to cause an imbalance of micronutrients. When you eat real whole foods, iron is always balanced with high levels of manganese and copper because the plants require these micronutrients to manage iron. We do too. Mn and Cu are required for the creation of crucial enzymes that are responsible for our most powerful endogenous antioxidants (SOD, MnSOD). Copper is also required for getting iron in and out of cells properly. Fortified foods have iron, but no Mn or Cu to counterbalance iron—so fortified foods appear to cause an imbalance that promotes more oxidative stress. Excess iron oxidizes and causes free-radical damage in tissues and organs.

      Many European nations, like the French, do not fortify their flour, but they can eat considerably more flour than Americans and France remains one of the thinnest of all developed countries. Americans eat less flour, but they quickly become obese eating fortified foods. It’s not all that surprising when you connect the dots.

      Because fortified foods do not mimic the ratios of micronutrients found in nature, they appear to cause micronutrient imbalances that promote oxidative stress and chronic disease.

      Reply
  3. Rachel says

    June 4, 2016 at 8:23 pm

    Here are two fascinating new articles explaining how food enrichment is used by the food industry to bolster our appetites for refined foods. The increases in enrichment levels correlate precisely with the American obesity epidemic. Without food enrichments, we would be less likely to eat junk food because we would be more likely to crave real foods.

    How Food Enrichment Promotes Obesity

    More Nutrients, Less Nutrition: The Truth About Fortified Foods,

    Reply
  4. Gina says

    September 27, 2016 at 4:06 pm

    I would like to add that I and many others do not tolerate folic acid, which is the synthetic version of naturally occurring folate. I didn’t know until recently why multivitamins including high quality prenatal vitamins and many foods left me extremely itchy and made my skin break out until I tested positive for a MTHFR mutation, which means my body doesn’t optimally methylate and absorb folate and apparently doesn’t tolerate the man made folic acid at all. I’ve seen estimates that 20-40% of the US population has this mutation with varying degree of effect so it’s not uncommon. Who knows what else we’ll discover.

    Reply

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