PTE Reading MC Single Answer: Sometimes too much of a good thing can become a very bad thing indeed. In an earnest at…

Sometimes too much of a good thing can become a very bad thing indeed. In an earnest attempt to consume a healthy diet, dietary supplement enthusiasts have been known to overdose. Vitamin C, for example, long thought to help people ward off cold viruses, is currently being studied for its possible role in warding off cancer and other diseases that cause tissue degeneration. Unfortunately, an overdose of vitamin C – more than 10,000 mg – daily can cause nausea and diarrhea. Calcium supplements, commonly taken by women, help ward off osteoporosis. More than just a few grams a day, however, can lead to stomach upset and doses to those who suffer from heart problems, asthma, or ulcers.