Lack of nutrition in case of pregnancy leads to the general asthenia and deficiency of Qi and blood of fetus.
综考历代相关文献,虚劳之先天成因有以下几个方面:一是早婚早育,肌体稚弱,精气未生,血气未充,肾元亏虚;二是久病、劳逸过度、性生活失调导致父母体质虚弱;三是高龄生育;四是妊娠失养导致子代先天禀赋薄弱,胎儿气血供养不足,出生后体质虚弱,生长发育受到影响,从而形成虚劳的病理基础。
Discussion on pathogenesis of senile dementia from deficiency of the spleen and stomach;
脾胃虚弱与老年性痴呆发病机制探讨