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Aisha Is a 21 Year-Old, Long-Distance Runner

question 6

Essay

Aisha is a 21 year-old, long-distance runner. She is underweight and has stopped menstruating. Her total energy intake is 500 kilocalories below her recommended intake. Her average calcium intake is 800 mg/day and her average vitamin D intake is 5 ug/day. Aisha also has lactose intolerance. Provide a likely explanation for why Aisha is no longer menstruating. Explain how this can impact her long-term bone health. Provide Aisha with some dietary suggestions to improve her nutrient intakes. Include a discussion on the bioavailability of nutrients in your dietary recommendations. If Aisha were to consider supplements, which would be the best choice?


Definitions:

Making Choices

The process of deciding between two or more alternatives, often evaluated in terms of costs and benefits.

Margin

The difference between the selling price of a product and its cost of production or buying price, often expressed as a percentage of the selling price.

Marginal Analysis

The examination of the benefits and costs of an additional unit of consumption or production, used to make decisions based on the extent of added benefits over added costs.

Lemonade

A sweetened beverage made from lemon juice, water, and sugar, often sold as a refreshment during warm weather.

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