Supplements for pregnant women

According to a survey from Hong Kong Health Food Association, the percentage of respondents who took health supplements increased from$$44.7\%$$in 2014 to$$58.2\%$$in$$2019.$$Among the health supplement users, there were$$28.9\%$$of them taking vitamin and mineral supplements regularly. However, taking such supplements without genuine needs may contribute to the increased risk of nutrient toxicity. Explain the valid reasons for pregnant women and the elderly to take nutritional supplements respectively. (Hints: their nutrition concerns should be identified and explained respectively.)