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HNSC 1200 (46)
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Chapter 1

HNSC 1200 Chapter 1: Topic 1.6

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University of Manitoba
Human Nutritional Sciences
HNSC 1200
Snehil Dua

o982 need for continues food production. 
 2. Make sure everyone has access to this food. 
 The world population is growing at a rapid rate. 
 Every 30 seconds, 15 children die of malnutrition, while 125 are born. 
 Every day, the earth gains 222,000 new residents to feed – most born into impoverished nations (SEE FIGURE 15-5: Income and Birthrate in your NCC Supplement). 
 When you look at the world food supply, enough food is produced to feed the entire current population, however many that are in need are unable to get adequate food, while others have an overabundance. 
 Globally, there are approximately 800 million people who experience hunger and protein- energy malnutrition.
 However there are over 1.1 billion people worldwide who are overweight/obese. 
 Environmental Issues and Nutrition Learning Objectives: Discuss factors that affect global food production and distribution 
 Discuss biodiversity 
 Define sustainability and discuss sustainable agricultural practices 
 Discuss ways that you could positively impact the environment 
 Course Notes: It is important that we have the ability to produce food for the world, while maintaining a healthy environment. 
 Food and Agricultural Factors Affecting Nutrition and Health: 1. Increased demand for food is influenced by: 
 Population growth – at the present rate of growth, the world’s population is expected to soon surpass the current rate of food production o|82 Urbanization – new developments, destroys farmland Food losses, wastage and spoilage Demand for high animal-protein diets – plant based foods take the least amount of energy to produce, while animal foods take the most energy 2. Increased food production is influenced by:
 Productive land Irrigation Fuel Animal health Animal wastes Increased productivity Agricultural chemicals Aquaculture Biotechnology – genetic engineering Decreased food losses 3. Environmental changes that may have negative effects on food production:
 Climate changes – can cause droughts and flooding, destroying crops and peoples homes 
 Ozone layer depletion – growing thinner, allowing harmful radiation from the sun to penetrate the earth. May potentially damage crops and ecosystems 
 Pest r
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