National Healthy Fats Day is observed worldwide on March 21 each year. This holiday aims to educate people about the different types of fats in our diet and the significance of healthy fats. It encourages individuals to incorporate sources of unsaturated fats, such as vegetable oils, fish, nuts, and avocados, into their meals while limiting saturated fats and eliminating trans fats. Typical customs include preparing meals rich in healthy fats, trying new vegetable oils, and discarding processed foods containing trans fats. Participants often share information about healthy fats on social media using hashtags like #NationalHealthyFatsDay and #HealthyFatsDay. The day serves as a reminder of the importance of a balanced diet that includes carbohydrates, proteins, and fats.