The following factors are known to affect the amount of nutrients needed by man:
1. Age: The overall quantity of nutrients needed is higher for adults than for children
2. The state of health: Sick people may need certain kinds of nutrients than others. For example they need more vitamins and proteins for quick recovery
3. The type of lifestyle or job one does: People who lead active lifestyles need more carbohydrates to be able to sustain such lifestyle. However, people with sedentary lifestyles need to regulate the amount of nutrients they take in to prevent overweight and its complications
Whenever we are not able to obtain the required nutrients in sufficient quantiites, we suffer from malnutrition. The common symptoms of malnutrition are the following:
- Emanciation and loss of weight
- Nutritional diseasaes
-Low resistance to diseases and infections
- slow growth rate
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