Read the passage below carefully, and then choose the best answer:
Are Vitamins Beneficial?
If you happen to flip through TV channels, you are likely to come across a commercial for a new vitamin or supplement designed to improve your health. These pills often promise the world, claiming to cure baldness, or kick-start fat loss. But in the medical community, there is some debate as to whether these products provide any tangible benefits at all. Millions of people worldwide begin their day by popping a multi-vitamin. These pills are supposed to effortlessly provide our bodies with vitamins in case we have missed them in our meals. It seemed to be a no-brainer that everyone should take one. Scientific studies, however, have painted another picture. In 2006, a study conducted by the Agency for Healthcare Research and Quality, which used the strictest possible standards, concluded that multi-vitamins have zero effect on reducing a person’s chances of getting cancer or heart disease. The only people multi-vitamins benefitted were those in poverty-stricken nations who suffered from nutritional deficiencies. In 2009, a related study by the Fred Hutchinson Cancer Research Center came to a similar conclusion after monitoring 160,000 women for a period of 10 years. Antioxidants are another supplement that is promoted to improve health and prevent aging. Antioxidants are found in vitamins A, C, and E, and are supposed to greatly reduce cellular damage. However, in a study that involved over 180,000 adults, those who took a combined dosage of these vitamins actually increased their risks of dying by 16 percent. One likely cause for these negative results is that people who eat healthy diets and take vitamins are probably getting too many nutrients, which can be toxic. Then why are these supplements being promoted? Many experts blame the health industry in the US and other nations because supplements are not highly regulated as they should be. What is worse, vitamin makers are not required to list negative side effects like medicines do. In many cases, it can even be difficult for the US’s Federal Drug Agency (FDA) to ban risky ingredients due to lengthy and expensive legal battles. On the other hand, after these studies were made public, people continued buying more vitamins than ever. It seems that no matter what evidence is presented, the majority of people are not ready to give up on a magic pill just yet.
5. Why might some people get sicker by taking supplements?