Question 1

Orlistat increases the absorption of vitamins A, D, E, and K.

Accepted Answer

Orlistat is a medication used for weight loss that works by inhibiting the absorption of fat in the intestine. While it can lead to a decrease in absorption of fat-soluble vitamins A, D, E, and K, it does not increase their absorption. In fact, it is recommended that individuals taking orlistat also take a multivitamin supplement to ensure adequate intake of these vitamins.

Question 2

The USDA did not approve any new weight loss medications between 1973 and 1996.

Accepted Answer

This statement is true. No new weight loss medications were approved by the USDA between 1973 and 1996.

Question 3

Dieter's teas promote weight loss by speeding food through the digestive tract so calories cannot be absorbed.

Accepted Answer

Dieter's teas generally contain laxative herbs that promote bowel movements and thus eliminate food quickly from the body, reducing the amount of calories that can be absorbed. However, frequent or excessive use of laxatives can lead to dehydration and electrolyte imbalances, and should be avoided. It is important to follow a healthy diet and exercise regimen for sustainable and safe weight loss.

Question 4

In theory, excess pyruvate might accelerate aerobic metabolism, oxidizing blood glucose and prevent conversion of excess carbohydrate to fat.

Accepted Answer

Pyruvate is a substrate for the citric acid cycle in aerobic metabolism, which leads to the production of more ATP. With excess pyruvate, more glucose from the blood can be oxidized in the mitochondria, preventing its conversion to fat.

Question 5

Half of adult women and one quarter of adult men will go on a diet this year..

Accepted Answer

This statistic is true according to several surveys and studies conducted on dieting behaviors.

Question 6

Exercising while fasting is recommended as a way to expedite weight loss.

Accepted Answer

Exercising while fasting can lead to muscle loss and decreased performance, and it's not necessarily more effective for weight loss than exercising after eating. It's important to fuel the body appropriately for the demands of exercise.

Question 7

Most commercial weight loss programs are technically "medically supervised."

Accepted Answer

Many commercial weight loss programs have medical professionals on staff or available for consultation, making them technically "medically supervised." However, the level and frequency of medical supervision can vary between programs.

Question 8

Approximately 70% of people who begin commercial low calorie diets dropout within twelve weeks.

Accepted Answer

This statement is true based on research studies on commercial low calorie diets. The dropout rate may vary depending on the specific diet and the population being studied, but it generally falls within the range of 50-80% within three to six months of starting the diet.

Question 9

The research on meal replacements show that the weight loss effects are comparable to weight loss with drugs, such as orlistat and lorcaserin.

Accepted Answer

Studies have shown that meal replacements can be just as effective as weight loss drugs when it comes to promoting weight loss.

Question 10

Dietary supplements are the same as drugs.

Accepted Answer

Dietary supplements are not the same as drugs. While they can have health benefits, they are not intended to treat or cure diseases and are not subject to the same regulations as drugs.

Question 11

The scientific literature demonstrates some short-term success with participants in a modified fast program.

Accepted Answer

According to the statement, the scientific literature shows some short-term success with participants in a modified fast program, indicating that there is evidence of success in the short-term.

Question 12

Vitamins and minerals are the only dietary supplements.

Accepted Answer

Dietary supplements can include vitamins and minerals, as well as other substances such as herbs, amino acids, and enzymes.

Question 13

There is ample evidence that chitosan promotes weight loss in humans.

Accepted Answer

Most studies on chitosan's effectiveness for weight loss in humans have shown mixed or inconclusive results, with many finding it has little to no significant impact on weight loss.

Question 14

According to FDA analysis, many of the dietary supplements vary widely and many products marketed as "natural" or "herbal" contain harmful ingredients.

Accepted Answer

The FDA has conducted analysis on dietary supplements and found that many of them vary widely in their contents and that products marketed as "natural" or "herbal" may contain harmful ingredients.

Question 15

People on a very low calorie diet (600-800 kcal/day)are three times more likely to develop gallstones than someone following a low calorie diet.

Accepted Answer

This statement is true. When the body is deprived of calories, the bile in the gallbladder can become concentrated and form gallstones. Therefore, people on a very low calorie diet are at a higher risk of developing gallstones than someone following a low calorie diet.

Question 16

Being able to identify a person's genotype might allow us to someday suggest a specific diet (e.g.low carb, low fat, balanced diet)and improve weight loss success.

Accepted Answer

Research has suggested that certain genes can affect how individuals respond to different types of diets. Identifying a person's genotype may allow for personalized dietary recommendations, leading to more successful weight loss outcomes.

Question 17

In cases of prolonged fasting, decreasing the metabolic rate may make regaining weight easier.

Accepted Answer

When the body goes into a prolonged fast, the metabolic rate decreases as a survival mechanism. This helps the body conserve energy and maintain essential bodily functions with a limited amount of food. However, when the fasting period is over, and regular eating resumes, the body may still have a lower metabolic rate. This means that when calories are reintroduced, the body may be more efficient at storing them as fat since it is still in conservation mode. Therefore, it may be easier to regain weight after a prolonged fast.

Question 18

Weight loss drugs have been prescribed with increasing frequency in the United States.

Accepted Answer

This is true. According to the Centers for Disease Control and Prevention (CDC), between 2015-2018, approximately 12.1% of U.S. adults age 20 and over used prescription weight loss drugs.

Question 19

The research on the effectiveness of Lorcaserin also showed that half of the study participants taking the placebo also maintained weight loss for a two year period.

Accepted Answer

This statement is true. The research on Lorcaserin found that while the medication did help some participants lose weight, about half of the participants who took a placebo also maintained weight loss for two years.

Question 20

Catecholaminergic drugs are like amphetamines and have a high potential for abuse.

Accepted Answer

The answer of Catecholaminergic drugs are like amphetamines and have...

Quiz 10: Weight Loss Drugs, Commercial and Fad Diets, Supplements, and Surgery