Explanation Reason for the correct answer: Option a. is given as “Dark skin pigmentation” Dark colored skin is associated with higher melanin levels in the skin which leads to decreased ultraviolet (UV) B absorption in these individuals. Therefore, endogenous synthesis of vitamin D through UV-B is reduced in dark skin pigmentation leading to increased risk for low vitamin D status. Hence, option a. is correct. Reasons for the incorrect answer: Option b. is given as “Light skin pigmentation” Light skin pigmentation is not a risk factor for low vitamin D status because such individuals do not have excess melanin pigmentation in their skin and therefore, their skin can synthesize vitamin D from sunlight...

7th Edition

ISBN: 9781337919333

Author: Brown, Judith E.

Publisher: Cengage Learning,

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Question

Chapter 14, Problem 1RQ

Summary Introduction

Introduction: Vitamin D is an essential nutrient that is required by the body for the absorption of calcium. It is present naturally in egg yolk, sea food, and milk. Our body can also synthesize vitamin D using sunlight, mainly from the cholesterol in body. Vitamin D also has roles in immune, muscular and nervous systems. Deficiency of vitamin D can lead to osteoporosis.

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Chapter 14, Problem 1.5CS

Chapter 14, Problem 2RQ

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Chapter 14 Solutions

Nutrition Through The Life Cycle

Ch. 14 - Prob. 1.1CS Ch. 14 - Prob. 1.2CS Ch. 14 - Prob. 1.3CS Ch. 14 - Prob. 1.4CS Ch. 14 - Prob. 1.5CS Ch. 14 - Prob. 1RQ Ch. 14 - Prob. 2RQ Ch. 14 - Prob. 3RQ Ch. 14 - Prob. 4RQ Ch. 14 - Prob. 5RQ

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Solution Summary: The author explains that vitamin D is an essential nutrient that is required by the body for the absorption of calcium.

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