Factors that alter Energy/Nutrients Need

Factors that alter Energy/Nutrients Need


We know by now that we need to eat the right foods, need to work out, and do stuff that is healthy for us. Because maintaining good health does not happen by accident, it requires work and smart lifestyle choices. But sometimes when we wake up at 6 am to hit the gym before work or shunning the donuts in breakfast, it’s easy to lose sight of for what are we doing all these. So here are some top articles choices that can keep you motivated to lead a healthy lifestyle and keep diseases at bay.

Factors that alter Energy/Nutrients Need

The energy or nutrients need is affected by several factors such as age, sex, growth (especially rate of growth), physical activity, pregnancy and lactation, composition of diet, coexisting diseases, and drugs. Optimal health can not be maintained, unless increased energy demand is not adequately met.

Physiological factors:

Growth and development, pregnancy and lactation, physical activity level (mild, moderate or high physical activity level) increase energy requirement and other nutrients (non energy producing) such as water. During pregnancy, energy requirement increases due to increasing demands of energy for fetal growth and during lactation for producing milk. Energy requirement reduces when a person losses body weight (as REE is mostly dependent body weight). In elderly individuals energy requirement is less in compare to a younger person of equal body weight. Males with similar body weight tend to require more energy than women with equal body weight due to high REE among males. Children also require higher energy per kilo of body weight than adults.

Dietary factors:

Dietary factors play a role in biologic availability and utilization of nutrients. High calcium in diet impairs absorption of iron as well as lack of amino acids and ascorbic acid (vitamin C). Animal protein has high biologic value or quality and need lesser quantity and plan protein has low biologic value and need to be taken higher quantity daily for making up protein requirement.

Route of intake:

Oral intake may not cause absorption of whole amount, e.g. oral intake of minerals need much more than parenteral administration. But in general most energy producing nutrients such as proteins, fats and carbohydrates and other nutrients such as sodium, chloride, potassium, and most of the vitamins are absorbed almost 100% and there is no change in the requirement.

Disease factor:

Disease can alter the energy/nutrients requirement.  Any deficiency disease increases the requirement of that particular nutrient or other nutrients as well. For example protein-calorie malnutrition increases requirement of most of the nutrients with increased energy requirement.

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