[Age distribution of nutrition and health knowledge among Chinese adults in 2021].

Objective: To analyze the age distribution of nutrition and health knowledge level of Chinese residents aged 18-64.

Methods: A total of 102 398 residents aged 18-64 were selected from 302 survey sites in China by multi-stage cluster random sampling method, a total of 98 567 respondents were included in the study. Both mean and rate were calculated by complex sampling weighting.

[Dietary recommendation-related knowledge level of Chinese adults in 2021].

Objective: To analyze the knowledge level and related factors related to dietary recommendations for Chinese residents aged 18-64 years in 2021.

Methods: A multi-stage cluster random sampling was used to select 302 survey sites across the country, there were 102 398 people surveyed, with 98 567 valid questionnaires, 49.4% male and 41.