预防出生缺陷，关注孕期营养（服务窗）

Group 1 - The core viewpoint emphasizes the importance of preventing birth defects through a multi-faceted approach, including genetic screening and prenatal care [1] - The three levels of prevention are outlined: primary prevention (pre-marital and early pregnancy checks), secondary prevention (prenatal screening and diagnosis), and tertiary prevention (postnatal checks for congenital and hereditary diseases) [1] - Various technologies are available to reduce the occurrence of birth defects, such as genetic screening for conditions like deafness and spinal muscular atrophy, and prenatal ultrasound to detect structural defects [1] Group 2 - Maintaining a healthy lifestyle during the pre-pregnancy and pregnancy periods is crucial, including regular health checks and avoiding harmful substances [2] - Nutritional intake during pregnancy should be balanced, with recommendations for daily intake of 200-250 grams of staple foods and at least 300 grams of vegetables [2] - Pregnant women should consume 1-2 cups of milk daily and include iron-rich foods, iodized salt, and supplements like folic acid and vitamin D [2] Group 3 - When experiencing severe pregnancy reactions, it is advised to prioritize easy-to-digest foods and maintain a flexible eating schedule, focusing on staple food intake [3] - Increasing vitamin B6 and incorporating ginger-based foods may help alleviate nausea during pregnancy [3]