There is no clear answer that the earlier sex education is, the better, because every child's development and needs are different. However, research shows that proper sex education is helpful to improve children's sexual health knowledge and promote healthy sexual behavior.

In kindergarten, children can be given basic sex education, such as telling them the correct vocabulary about body parts, so that they can have respect and security for their bodies. With the growth of children's age, we can gradually deepen the content of sex education, such as introducing sex life, contraception and preventing sexually transmitted diseases.

For teenagers, the support in sex education is very important, because they are in the stage of physiological and psychological changes. Proper sex education can help them make wise decisions and prevent health problems.

In a word, proper sex education is very important for people of all ages. When deciding when to start sex education, it is best to decide according to the child's development level, needs and family values.