Why It Is Done. A test for magnesium is done to: 1  Find a cause for nerve and muscle problems, such as muscle twitches, irritability, and muscle weakness. 2  Find the cause of symptoms such as low blood pressure, nausea, vomiting, diarrhea, dizziness, muscle weakness, and slurred speech.3  Monitor kidney function.hy It Is Done. A test for magnesium is done to: 1  Find a cause for nerve and muscle problems, such as muscle twitches, irritability, and muscle weakness. 2  Find the cause of symptoms such as low blood pressure, nausea, vomiting, diarrhea, dizziness, muscle weakness, and slurred speech.
Pears pack a nutritional punch! A medium sized pear (about 166 grams) is a nutrient-dense food that contains only 100 calories, and is fat free. A nutrient-dense food is any food that provides vital nutrients (such as vitamins and minerals), but relatively few calories.ear Nutrition. Pears are among the most popular fruits in the world, and itâs no wonder why! They are an excellent source of fiber and a good source of vitamin C for only 100 calories per serving. And, theyâre sodium free, fat free, and cholesterol free. Thatâs a lot of nutrition in one sweet and juicy package!
1 New study reveals that pears are associated with lower body weight. 2  Eating one medium pear each day leads to positive health effects. 3  The fruit can result in a higher quality diet as they are fat and sodium free.  Pears have a lot of fiber, vitamin C, magnesium, copper and potassium.