Scientists at Israel’s Weizmann Institute have been testing beta-sitosterol – a cholesterol lowering substance found in avocados and nuts. They believe it can also reduce anxiety without the side-effects that current anti-depressant medications have. The results support further trials.
https://www.israel21c.org/a-natural-supplement-to-lower-cholesterol-may-ease-anxiety/
https://www.cell.com/cell-reports-medicine/fulltext/S2666-3791(21)00109-9