This dashboard presents five heatmaps, one for each mental health disorder (Depression, Anxiety, Schizophrenia, Bipolar, and Eating disorders), showing the share of the population affected for the top 10 countries in 2019 across years from 1990 to 2019. The visualizations use D3.js v7 with SVG rendering, employing `d3.scaleBand` for axes, `d3.interpolateYlOrRd` for the color interpolation, and interactive tooltips on mouseover. The data comes from the CSV file `mental-illnesses-prevalence.csv`, which includes prevalence values for various countries and regions. Only the top 10 countries with the highest 2019 prevalence rates are displayed for each disorder, allowing immediate comparison of geographic patterns over time.