Research Regarding the Benefits or Risks of Taking Vitamin Supplements

Research regarding the benefits or risks of taking vitamin supplements to reduce the risk of chronic diseases has shown that:

A) vitamin C supplements are associated with an increased risk of chronic diseases
B) people who take vitamin E supplements have lower rates of heart disease
C) use of the beta-carotene supplement increases the risk of lung cancer in smokers
D) all supplements sold in this country are safe and effective
E) supplements can fix nutrient deficiencies so a diet that lacks many nutrients is not dangerous