I'm A 76 Year Old Female Possibly Challenged W/thyroid Issues;

I'm a 76 year old female possibly challenged w/thyroid issues; high cholesterol (a bit) but am still working, doing lots of physical labor and am majorly healthy, happy and active for my age. I'm curious
what the downside is of eating avocadoes? Oh yeah, I weigh 165, am now 5'8" and stay relatively calm
most of the time. T.U. Jeanne