In this lab, we considered various human adaptations. It is important to remember that many of these adaptations evolved to suit environmental circumstances of the past,

In this lab, we considered various human adaptations. It is important to remember that many of these adaptations evolved to suit environmental circumstances of the past, and that they may be less helpful (or even maladaptive) in today’s world. For example, humans are adapted to store fat in the body for later use. This is very helpful during times when food is limited (such as during extended droughts) because it allows us to live on the fat stores of our bodies. However, in much of the world today, there is food abundance rather than food scarcity. In the face of food abundance in many populations today, our ability to store fat becomes maladaptive and contributes to obesity and related health problems (type 2 diabetes, heart disease, etc.).

One way to measure obesity and other weight categories is called body mass index (BMI).

STEP 1

Calculate your BMI using the formula on pp. 248-249 of your lab manual. If you have access to a scale and measuring tools, take current measurements of your weight and height to generate the most accurate determination. If you do not have access to these tools, use your best guess. (I am a female I weight 160 lbs and I am 5’2)

STEP 2

Make comparisons. To answer the following questions, use the BMI database compiled by the World Health Organization at http://gamapserver.who.int/gho/interactive_charts/ncd/risk_factors/bmi/atlas.html Links to an external site..

This site shows mean (average) BMI data for adults in countries around the world. If you scroll over or click on a country in the map, it highlights that country’s data on each chart.
How does your BMI compare with the mean (average) for adults in the United States?
(Q002) A person is considered overweight if their BMI is ?? 25. How does the mean (average) for adults in the United States compare to this standard?
(Q003) Looking at the world map for mean (average) adult BMI, what regional trends do you notice?
Q004) Why might there be regional differences in BMI?
(Q005) What are the implications of these trends for worldwide health now and in the future?

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