Determine the nutritional needs of humans, Biology

Assignment Help:

Determine the nutritional needs of humans?

In the previous unit, we saw how involvement in sport or vigorous activities can affect the body's nutrient needs. In this unit, we will focus on nutritional needs of humans who are away from the normal conditions of living environment i.e. affected  by calamities or emergencies (natural or manmade) or exposed to environmental  extremes such as hot, cold, rugged terrain environments as high attitudes. All major emergencies often result in food shortage, impair the nutritional status of population and cause excessive mortality in almost all age groups. In such cases, nutritional awareness becomes important for planning the emergency management.

Human beings can function effectively in extreme environments, provided adequate behavioural precautions (proper clothing, shelter, food and water) are taken.  Expeditionary or recreational outdoor activities are generally conducted in hot, cold, rugged terrain environments such as high altitudes. Mountaineering, cross-country skiing, snowshoeing, sledging and backpacking can be physically demanding along with an added element of danger due to environmental wilderness. These areas need to be manned by armed forces personnel if national boundaries run through such locations for security reasons.

In such cases, it has been observed that miscalculation of physical abilities or inadequate preparedness can be life threatening. Nutrition is a prime need for survival, sustaining physical and mental performance. Under this unit, you will read how nutritional requirements vary with the environment and also about the minimum requirements to prevent malnutrition-related diseases and mortality in emergency situations. You will appreciate the role of nutritional sciences in human success on the planet Earth and in space exploration, which is relatively a new frontier with microgravity as main stress factor.

Objective

After studying this unit, you will be able to:

  • describe nutritional needs during calamities and emergencies,
  • understand the nutrient requirements for working under environmental extremes i.e. hot, cold and high altitudes, and
  • Discuss the nutritional needs during space travels.

Related Discussions:- Determine the nutritional needs of humans

Define the causes of failures of root canal treatment, Define the Causes of...

Define the Causes of Failures of Root Canal Treatment 1. Errors in diagnosis and treatment planning 2. Coronal leakage ( inadequate restorative protection) 3. Lack of kno

Fundamental structure of a virus, Q. What is the fundamental structure of a...

Q. What is the fundamental structure of a virus? Viruses are constituted of genetic material RNA or DNA covered by a protein capsule also known as a capsid. Some viruses, like

Compare the time-course to the rising phase, Assume you are injecting a sub...

Assume you are injecting a sub threshold depolarizing current step into a neuron. Draw the corresponding membrane voltage response; be sure to indicate the shape of the voltage cha

How to load glycogen, How to load glycogen? Over the past fifty years, ...

How to load glycogen? Over the past fifty years, the biggest breakthrough was the discovery of how to load glycogen and sophistication in the methods of glycogen loading. Nitro

What are genotypes and phenotypes, The agouti locus in mice has three allel...

The agouti locus in mice has three alleles: A is recessive and confers a black coat, A is dominant to a and confers an agouti coat, and AY is dominant to both and confers a yellow

Nursing interventions of a patient with acute alcohol, Nursing Intervention...

Nursing Interventions of a Patient with Acute Alcohol: Intoxication  and Withdrawal Some nurses find it very difficult to work with the alcoholics. This is particularly true w

Salts responsible for the cellular osmotic regulation, Q. What are the majo...

Q. What are the major mineral salts responsible for the cellular osmotic regulation? The main ions that act in the regulation of the osmotic pressure in tissues and cells are t

What is critical photoperiod, What is critical photoperiod? And How can the...

What is critical photoperiod? And How can the critical photoperiod relate to flowering be experimentally determined? Critical photoperiod is the limit of the photoperiod durati

Difference between algae and protozoans, Q. What is the fundamental differe...

Q. What is the fundamental difference between algae and protozoans? The basic difference between algae and protozoans is the fact that algae are photosynthetic autotrophs while

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd