营养科学在近年有很大的进步。就食品方面言,英国对于食物是严格的统制的,但由于宣传采用简单食物的努力,尤其对于妇孺及保持民众健康的深切注意,其效果就已很惊人。因为不但妇孺的死亡率已降至历史上最低之数,而且肺结核症和儿童的牙病亦已减少了。在营养养上极重要的一种成就,当推维他命B 复剂Complex 或称绿叶酸folic acid 的合成。这种合成品现已大量制造,其分子构造虽未公开,但由种种实验可证明其含于普通食物之内。其发明历史 Nutritional science has made great strides in recent years. In the case of food, the United Kingdom has strict control over food. However, its effectiveness has been staggering due to its efforts to promote simple food, especially for women and children and for keeping the general public well-being. This is because not only has the mortality rate of maternal and child health dropped to the lowest level in history, but also the incidence of dental problems in tuberculosis and children has also been reduced. One of the most important accomplishments in nutrition is the synthesis of the vitamin B complex or vitamin folic acid. This synthetic product has now been manufactured in large quantities, though its molecular structure is not disclosed, but it has been proved by various experiments that it is contained in ordinary food. Its invention history