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Related Concept Videos

The Periodic Table and Organismal Elements00:57

The Periodic Table and Organismal Elements

OverviewElements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally-occurring, and fewer still are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.The Periodic Table Provides Information...
The Periodic Table and Organismal Elements01:27

The Periodic Table and Organismal Elements

Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally occurring, and only a few of them are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.
Periodic Table Provides Information...
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.
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...
Proteins: Dietary Sources and Requirements01:28

Proteins: Dietary Sources and Requirements

Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...

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Related Experiment Video

Updated: May 25, 2026

Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
05:08

Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay

Published on: January 31, 2022

Iron, meat and health.

Catherine Geissler1, Mamta Singh

  • 1Nutritional Sciences Division, King's College London and MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge CB1 9NL, UK. catherine.geissler@kcl.ac.uk

Nutrients
|January 19, 2012
PubMed
Summary

This review of UK iron intake highlights uncertainties in understanding iron deficiency and excess risks. Further research is recommended to clarify dietary iron

Area of Science:

  • Nutritional Science
  • Public Health Nutrition

Background:

  • The Scientific Advisory Committee on Nutrition (SACN) published "Iron and Health" in 2010.
  • This publication reviewed dietary iron intake and its health impacts in the UK population.

Purpose of the Study:

  • To summarize the SACN "Iron and Health" report.
  • To assess the impact of dietary patterns on iron status and health in the UK.
  • To identify uncertainties in iron nutrition and associated health risks.

Main Methods:

  • Literature review of existing data on iron intake and health.
  • Analysis of dietary patterns and their relation to iron status.
  • Evaluation of evidence for iron deficiency and excess risks.

Main Results:

Keywords:
diethealthiron

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  • Significant uncertainties exist in determining dose-response relationships for iron.
  • Characterizing the risks of both iron deficiency and iron overload remains challenging.
  • Dietary patterns, including meat consumption, influence iron intake.

Conclusions:

  • More research is needed to address uncertainties in iron nutrition.
  • Recommendations are made regarding iron intake from food and supplements.
  • Further investigation into dose-response relationships and risk assessment is crucial.