Question 1

Routine vitamin C supplementation

Accepted Answer

Routine vitamin C supplementation may help reduce the duration of cold symptoms by a day or so, especially in people with low vitamin C levels or those who engage in heavy physical activity. However, it does not prevent the common cold or Alzheimer's disease, nor does it have a significant impact on reducing the risk of kidney stones for the general population.

Question 2

Blake is a college student whose diet consists primarily of enriched white bread,chicken,meat,cheese,yogurt,and milk.Furthermore,he doesn't take dietary supplements.Based on this information,Blake has a high risk of developing

Accepted Answer

The answer of Blake is a college student whose diet...

Question 3

Geoff wants to lower his risk of cancer.According to scientific studies,consuming ____ may decrease his risk of this chronic disease.

Accepted Answer

Broccoli is known to contain glucosinolates and sulfur which have cancer-fighting properties. Consuming broccoli may lower the risk of certain types of cancer such as breast, lung, colon, and prostate cancer. Beer and stick margarine, on the other hand, have been linked with an increased risk of cancer. Charcoal-grilled meat, when overcooked, forms heterocyclic amines (HCAs) which have been found to increase the risk of certain types of cancer such as colon, pancreatic, and prostate cancer.

Question 4

Which of the following foods is a good source of vitamin C?

Accepted Answer

White potato is a good source of vitamin C, with one medium potato providing about 30% of the daily recommended intake. Beef steak, fat-free milk, and whole-wheat bread are not significant sources of vitamin C.

Question 5

Sam wants to lower his risk of cancer.According to scientific studies,consuming ____ may increase his risk of this chronic disease.

Accepted Answer

According to scientific studies, consuming processed meats such as hot dogs, sausages, bacon, and deli meats can increase the risk of cancer, particularly colorectal cancer. Therefore, to lower the risk of cancer, Sam should avoid or limit consumption of processed meats. Brussels sprouts, onions, and citrus fruits, on the other hand, have cancer-fighting properties and can be included in a healthy diet to reduce cancer risk.

Question 6

Which of the following foods is a rich source of vitamin C?

Accepted Answer

Broccoli is a known rich source of vitamin C. One cup of chopped broccoli contains 81mg of vitamin C, meeting more than 100% of the daily value for an adult. Whole-wheat bread, fat-free milk, and ground beef are not significant sources of vitamin C.

Question 7

Having excess body fat increases the risk of

Accepted Answer

Excess body fat increases the risk of esophageal cancer. The other options (A, B, C) are not related to excess body fat.

Question 8

Marta is a teenager who doesn't eat fruits and vegetables.Her diet consists primarily of chicken,cottage cheese,yogurt,enriched bread,and butter.Furthermore,she doesn't take dietary supplements.Based on this information,Marta has a high risk of

Accepted Answer

Marta's diet completely lacks fruits and vegetables, which are the primary sources of vitamin C. Without vitamin C, she is at high risk of developing scurvy, a disease caused by a deficiency of this vitamin. The other options (beriberi, osteomalacia, and pellagra) are caused by deficiencies of other vitamins or micronutrients that are not relevant to Marta's diet.

Question 9

Which of the following practices is associated with an increased risk of cancer?

Accepted Answer

Drinking alcoholic beverages is associated with an increased risk of cancer, particularly cancers of the mouth, throat, esophagus, liver, breast, and colon. Eating foods high in folate and vitamin C, being physically active, and consuming high-fiber diets can actually decrease the risk of certain cancers.

Question 10

Megadoses of ____ may be used to reduce elevated LDL cholesterol levels.

Accepted Answer

Nicotinic acid, also known as niacin, is a form of vitamin B3 that has been shown to effectively lower LDL cholesterol levels at high doses. However, it is important to note that megadoses of nicotinic acid can also lead to side effects such as flushing and liver toxicity. Therefore, it should only be taken under the supervision of a healthcare professional. Biotin, thiamin, and vitamin K have not been shown to have significant effects on LDL cholesterol levels.

Question 11

____ is a carcinogen.

Accepted Answer

Alcohol is a known carcinogen and has been associated with various types of cancer, including those of the mouth, throat, liver, breast, and colorectum. Cholesterol, white bread, and whole milk are not carcinogens.

Question 12

According to the 2015-2020 version of the Dietary Guidelines,which of the following vitamins is a nutrient of public health concern?

Accepted Answer

According to the 2015-2020 Dietary Guidelines, Vitamin D is a nutrient of public health concern because many people in the United States do not get enough of it. Pantothenic acid, choline, and Vitamin B-6 are all important nutrients, but they are not specifically identified as nutrients of public health concern in the Dietary Guidelines.

Quiz 8: Vitamins