Discusses the possible reasons a three-month-old baby cannot raise their head, including lack of exercise, deficiency of trace elements, and brain development issues.

Discusses the definition of delayed childhood development and how supplementing with trace elements can promote intellectual development.

Delayed child development may be related to nutritional deficiencies, and parents should focus on nutritional supplements and balanced diets.

A child’s growth and development often occur during nighttime sleep, making sleep crucial for development. Parents should encourage their children to sleep early and wake up early to avoid missing the critical growth period.