ENVI 101 Lecture Notes - Lecture 24: South America, Iodine Deficiency, Polyculture

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Some people dont have access to nutritious food/enough food. Some people have overnutrition and have too much access to foods. More people face this problem than other. Poverty is the root cause of food insecurity. Half of the worlds people are trying to survive on the equivalent of a . 25 a day and one out of six people struggle to get by on . 25 a day. Proper nutrition requires macro and micro nutrients. Macro: we need these in high amounts. Carbohydrates (simple sugars) are energy storage compounds, we break these down to release the stored energy from them. We are facing problems because we are over consuming fatty lipids. Micro: we need these in smaller supplies. Chronic undernutrition (hunger) vs chronic malnutrition (not having the right proteins and nutrients) Famine ( severe shortage of food, mass starvation, death) World hunger (1 in every 7 people) Irish ppl became heavily dependant on potatoes, a disease outbreak destroyed potato crops.

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