Reading Comprehension HESI A2 Practice Test Related

FAT IN A HEALTHY DIET:
After years of bad publicity, it may sound absurd, but many dietitians are now extolling the virtues of consuming fat. According to Laurie Tansman, a nutritionist at Mt. Sinai Medical Center in New York, fat "not only plays a vital role in the health of the membrane of every cell in our body, it also helps protect us from a number of key health threats." Fat is a critical part of your necessary food intake, with a general recommendation that 30 percent of your daily calories should come from fat. Without it, your body would not be able to absorb or transport vitamins A, D, E, and K. Additionally, body temperature, hair follicles, and skin cells all rely on the consumption of fats to function properly.
There is near-universal agreement that the healthiest fats are unsaturated fats. This category includes olive oil, sesame oil, walnut oil, avocado oil, and omega-3 fatty acids. When consumed in moderation, these fats can lower cholesterol levels, thereby reducing the risk of heart disease. Saturated fats, while not as healthy as unsaturated fats, should still be consumed more sparingly. These fats are commonly found in animal products such as beef, pork, and chicken.
The least healthy of all fats are trans-fatty acids, or trans fats. Though trans fats can occur naturally in small amounts in animal products, they are more commonly found as artificially produced oils used for frying foods or softening prepackaged snacks. These fats increase the risk of heart disease, and the U.S. Dietary Guidelines recommend consuming as few trans fats as possible.

Choose the best summary of the passage.

• A. We often think of all fat as bad, but it is clear that certain fats, especially the more healthful unsaturated fats, are important for bodily function.
• B. If you must consume some fat, be sure to choose unsaturated fats such as oils rather than saturated fats found in prepackaged snacks or animal products.
• C. Doctors and researchers have discovered that without the calories found in fat, people would not have functioning metabolisms.
• D. Some intake of saturated fat is necessary, but you should stay away from the kind of fat found in fried food, which can lead to heart disease.

MICROBES IN HUMAN HEALTH:
There are 10 times more microbes than human cells in the human body. Scientists have long known that the human body hosts a staggering number of microorganisms. Recent discoveries, however, are shedding light on how pivotal these bacteria are in the development of the human immune system. The body supports a wide array of microorganisms specially adapted to survive in particular regions. Remarkably, there is such variation in these microorganisms that few people share the same strains in the same quantities.
The colonization of microbes begins at birth. A newborn infant, emerging from the germ-free environment of the womb, is immediately exposed to germs from its mother's birth canal. These bacteria swiftly begin to breed and colonize the infant's body, which becomes their new host. The most fascinating discovery is not just that the immune system tolerates these millions of harmless organisms, but that it may actually rely on their presence to function properly.
For example, laboratory mice unable to produce a specific inflammation-reducing molecule were injected with a particular strain of bacteria. After the bacteria colonized, the mice's immune systems developed the ability to synthesize the molecule. Essentially, the mice needed the bacteria for their immune systems to function correctly.
This concept is also being applied to humans through a relatively experimental procedure known as fecal bacteriotherapy. This treatment reintroduces healthy bacteria into a colon that has lost its ability to defend against pathogens. While scientists are only beginning to understand the critical role these microorganisms play in human health, early research has yielded remarkable discoveries.

What is the main idea of the passage about microbes?

• A. Recent discoveries are revealing the critical role of microorganisms in maintaining a properly functioning immune system.
• B. The human body is host to a staggering number of microorganisms.
• C. Bacteriotherapy reintroduces healthy bacteria into a colon lacking the capability to defend against pathogenic agents.
• D. Early research has shown remarkable discoveries in the possibilities of bacteriotherapy.

Modern PE Classes:
In some schools around the country, physical education classes look a lot different than they did a generation or two ago. Kids are still in motion, stretching, running, lifting, and sweating. But instead of everyone doing the same activity at the same time as a team, they are exercising independently. They are being taught movements and activities that their teachers hope they will incorporate into their lives rather than just perform long enough to get a good grade.
By teaching kids the pleasure of exercise, gym teachers hope to instill important lessons about maintaining good health, staying fit, and keeping weight under control. Students can also participate in low-impact sports like yoga, martial arts, and weight lifting. Instead of playing basketball or baseball, they can focus on more general skills like passing the ball.
A growing number of physical education (PE) teachers are also putting more of an emphasis on general nutrition and health. With the continual increase in the number of children who are obese, there is greater pressure to teach students how to stay fit. To do this, gym teachers have to look at new ways to introduce exercise to their students that will not intimidate or overwhelm them but instead intrigue and engage them.
One other difference found in some modern gym classes is the grading system. Instead of being graded on their ability to run laps in a set time or make a certain number of baskets, the students are graded simply on the effort they make in the class. Some even get extra credit if they are the sweatiest students in the room!

What is the meaning of the word instill as used in the second paragraph of the passage?

• A. Impart
• B. Propagandize
• C. Demand
• D. Create

ACUPUNCTURE:
Over the years, acupuncture has become a more widely accepted type of alternative medicine. It is used for a wide variety of ailments, and if a recent study from Germany is valid, relieving menstrual pain can be added to the continuously growing list.
Traditionally nonsteroidal anti-inflammatory drugs (NSAIDs) are the typical treatment for menstrual discomfort. However, as many consumers and physicians are aware, NSAIDs have a number of side effects, including nausea, vomiting, rash, dizziness, headache, and drowsiness. Acupuncture rarely has any kind of side effects other than the occasional stinging sensation when the needle is inserted or a deep ache around it after it is in place.
Acupuncture has proven helpful with relieving a number of kinds of pain, so researchers at Charité University Medical Center in Berlin wanted to find out how effective it might be in combating cramps and other menstrual discomforts. More than 200 women were enrolled in the study, and after three months and approximately 10 sessions, the women who were treated with acupuncture reported significantly less pain than those in the control group who received no treatment at all. They also reported a 33 percent improvement in their symptoms.
Because of these findings, the researchers came to the conclusion that “acupuncture should be considered as a viable option in the management of these patients.”

What is the meaning of the word viable as used in the last paragraph?

• A. Reasonable
• B. Unresolved
• C. Contemporary
• D. Consistent

SLEEP:
Most people get a little grumpy when they do not get enough sleep, but for children, the issue may extend beyond mere irritability. Lack of sleep can affect their weight and overall behavior. A study conducted in New Zealand at the University of Auckland and published in the medical journal Sleep followed almost 600 children from infancy through seven years of age. Researchers observed the children�s sleep patterns and found that they generally slept less on weekends than during the week, and even less during the summer months.
According to the findings, children who slept the least were at a greater risk for being overweight and experiencing behavioral problems. Those who regularly slept less than nine hours a night were three times more likely to be obese and to show signs of attention deficit disorder (ADD) and attention deficit hyperactivity disorder (ADHD) compared to those who slept more. These results were based on questionnaires completed by the children�s parents and teachers.
The connection between sleep and weight is still not fully understood, but experts suspect that chronic sleep deprivation may alter hormones involved in appetite control and metabolism. This is a connection that needs further exploration to be fully understood.
Experts recommend that preschoolers get 11 to 13 hours of sleep each night, while school-age children should get between 10 and 11 hours per night. However, many children average only 8 hours of sleep. The study concluded that adjusting sleep duration is a manageable risk factor that can help prevent future health problems for today�s young people.

What conclusion can a reader draw about the connection between sleep and young children?

• A. Lack of sleep causes children to fail in school.
• B. Inadequate rest raises the risk of behavioral and physical problems.
• C. Sleeping less than 10 hours a night is guaranteed to result in obesity.
• D. Eight hours of sleep each night meets the requirements of most children.