Navigation Links
Many middle-aged and older Americans not getting adequate nutrition
Date:2/28/2009

March 1, 2009, St. Louis, MO Micronutrients such as calcium, magnesium, potassium and vitamin C play essential roles in maintaining health. As older adults tend to reduce their food intake as they age, there is concern that deficits in these micronutrients lead to medical problems. In a study published in the March 2009 issue of the Journal of the American Dietetic Association, researchers examined how well different ethnic groups met the recommended daily allowances (RDAs) through food intake and supplement consumption. The study determined that many middle-aged and older Americans are not getting adequate nutrition.

Using data drawn from the Multi-Ethnic Study of Atherosclerosis (MESA), a prospective cohort study designed to investigate the prevalence, correlates and progression of subclinical cardiovascular disease, researchers examined over 6200 participants from 4 ethnic groups, Caucasian, African American, Hispanic and Chinese. Dietary intakes were determined from food frequency questionnaires and respondents were asked to provide amounts and frequencies of micronutrient consumption using label information from their supplements. These data were used to calculate whether the RDAs or Adequate Intake (AI) levels were being met. The large sample size and multiple ethnic groups in this population gave investigators enough power to examine interactions between supplementation and ethnicity.

Over half of the population took supplements, and supplement users were more likely to be older, women, Caucasian and college-educated. Calcium and vitamin C supplements were most common. Although dietary intake of calcium, magnesium, potassium and vitamin C was similar between supplement users and non-users for both men and women, there were differences in median dietary intake levels between the different ethnic groups. Chinese Americans tended to have the lowest dietary intakes, particularly in calcium where both Chinese and African Americans had significantly lower dietary intakes of calcium than Caucasians and Hispanics.

The study also evaluated differences between multivitamins and high-dose supplements. While high-dose calcium was associated with meeting RDA/AIs for all ethnic groups, some high-dose supplements could also cause users to exceed their Tolerable Upper Intake Levels (ULs). For calcium, 15.0% of high-dose users exceeded the UL compared to 1.9% of multivitamin users and 2.1% of non-users. For magnesium, 35.3% of high-dose supplement users exceeded the UL compared to 0% of both multivitamin users and non-users. In addition, 6.6% high-dose vitamin C users exceeded the UL compared to 0% of both multivitamin users and non-users.

The study also found that potassium intake was very much below the RDA whether supplements were taken or not. This could point to a need to reformulate supplements to deliver higher potassium doses.

Writing in the article, Pamela J. Schreiner, MS, PhD, Professor and Director of Graduate Studies, Division of Epidemiology and Community Health, University of Minnesota, states, "The present study indicates a clear association between meeting RDA/AIs and supplement use for calcium, magnesium and vitamin C. However, even with the assistance of dietary supplements many middle-aged and older Americans are not getting adequate nutrition, and there was no association between supplement use and meeting the AI for potassium. In addition, those taking high-dose vitamin supplements were more likely to exceed the UL for that nutrient. Future studies should explore dietary supplementation along with other methods to improve nutrition in middle-aged and older Americans."


'/>"/>

Contact: Lynelle Korte
jadamedia@elsevier.com
314-453-4841
Elsevier Health Sciences
Source:Eurekalert

Related biology news :

1. Long-term study of middle-aged mice shows
2. No longer a gray area: Our hair bleaches itself as we grow older
3. Older killer whales make the best mothers
4. Gardening gives older adults benefits like hand strength and self-esteem
5. Gardening gives older adults benefits like hand strength and self esteem
6. Research finds older women who are more physically fit have better cognitive function
7. Pain is in the eyes of the beholder
8. Older people who diet without exercising lose valuable muscle mass
9. BIO-key(R) Issues Open Letter to Shareholders
10. Testosterone replacement theraphy beneficial in men 60 and older
11. RING finger protein 5 may guide treatment for muscle disease in older adults
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/1/2016)... June 1, 2016 Favorable Government ... Administration and Criminal Identification to Boost Global Biometrics System ... released TechSci Research report, " Global Biometrics Market ... Forecast and Opportunities, 2011 - 2021", the global biometrics ... 2021, on account of growing security concerns across various ...
(Date:5/16/2016)...   EyeLock LLC , a market leader of ... an IoT Center of Excellence in Austin, ... of embedded iris biometric applications. EyeLock,s iris ... security with unmatched biometric accuracy, making it the most ... EyeLock,s platform uses video technology to deliver a fast ...
(Date:5/3/2016)... 3, 2016  Neurotechnology, a provider of high-precision ... Automated Biometric Identification System (ABIS) , a complete ... MegaMatcher ABIS can process multiple complex biometric transactions ... of fingerprint, face or iris biometrics. It leverages ... and MegaMatcher Accelerator , which have been ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica ... in people with peritoneal or pleural mesothelioma. Their findings are the subject of a ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of ...
(Date:6/23/2016)... Mass. , June 23, 2016   ... development of novel compounds designed to target cancer ... napabucasin, has been granted Orphan Drug Designation from ... the treatment of gastric cancer, including gastroesophageal junction ... stemness inhibitor designed to inhibit cancer stemness pathways ...
(Date:6/23/2016)... 2016 Houston Methodist Willowbrook Hospital has ... Association to serve as their official health care ... Willowbrook will provide sponsorship support, athletic training services, ... coaches, volunteers, athletes and families. "We ... Association and to bring Houston Methodist quality services ...
(Date:6/23/2016)... June, 23, 2016  The Biodesign Challenge (BDC), a ... ways to harness living systems and biotechnology, announced its ... in New York City . ... students, showcased projects at MoMA,s Celeste Bartos Theater during ... , MoMA,s senior curator of architecture and design, and ...
Breaking Biology Technology: