More and more individuals with unhealthy lifestyles are turning to nutritional supplements as an effective method of adjustment. For those who consume copious amounts of fast food and fail to exercise, the issue of obesity is becoming increasingly severe. Those who stick closely to a weight loss program are advised to take multivitamin and mineral supplements since excessive diet control can lead to an inadequate nutrient intake. Women who are contemplating pregnancy are also urged to eat foods enriched with folic acid or take folic acid supplements in combination with folate-rich foods in order to lower the risk of certain serious birth defects in the fetus. At times of rapid growth and development, it is essential to boost nutrient intake, and in such cases, nutritional supplements may be needed. Some people have trouble absorbing nutrients as a result of certain health problems, including liver disease which can affect appetite or affect the absorption, utilization, and excretion of nutrients. Surgery may also increase the requirement for specific nutrients. For those taking drugs including antacids, antibiotics, laxatives, and diuretics, which hinder nutrient absorption, taking nutritional supplements should be considered.