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Related Concept Videos

Minerals01:26

Minerals

Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
Vitamins01:30

Vitamins

Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced in our...
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy01:30

Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy

Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the colonic...
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.

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Related Experiment Video

Updated: Jul 16, 2026

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells
13:04

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells

Published on: May 16, 2019

Zinc deficiency: a special challenge.

K Michael Hambidge1, Nancy F Krebs

  • 1Section of Nutrition, Department of Pediatrics, University of Colorado Health Sciences Center, Denver, CO 80220, USA. michael.hambidge@uchsc.edu

The Journal of Nutrition
|March 22, 2007
PubMed
Summary

Meat, like beef, can effectively address zinc deficiency in infants through complementary feeding. This strategy is crucial for rural populations in developing countries lacking fortified foods.

Area of Science:

  • Nutrition Science
  • Public Health
  • Pediatrics

Background:

  • Complementary feeding programs globally often rely on local, non-fortified food solutions, particularly for rural populations in developing countries.
  • Zinc is a critical "problem" nutrient, difficult to obtain in adequate amounts from unfortified complementary foods.
  • Meat and liver are explored as potential food-based solutions to address zinc inadequacy.

Purpose of the Study:

  • To evaluate the role of meat, specifically beef, in meeting zinc requirements during complementary feeding.
  • To assess the acceptability and bioavailability of zinc from beef in infants.

Main Methods:

  • A study in Colorado examined the acceptability of beef and cereal as complementary foods for infants aged 5-7 months.
  • Infant zinc intake and absorption from beef and breast milk were measured.

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Main Results:

  • Beef was found to be as acceptable as cereal for complementary feeding in infants aged 5-7 months.
  • Average zinc intake and absorption from beef, combined with breast milk, met estimated zinc requirements for infants by 7 months of age.
  • Barriers to meat acceptability and affordability exist but are not insurmountable in all contexts.

Conclusions:

  • Meat, particularly beef, can be a viable food-based strategy to improve zinc intake in infants during the complementary feeding period.
  • This approach offers a promising alternative to fortification for addressing zinc deficiency, especially in resource-limited settings.
  • Further research and targeted interventions can overcome barriers to meat consumption for improved infant nutrition.