I too get nightmares, really horrendous ones, but I have not come off the statins because the alternative is worse. I taught myself to be aware that I was dreaming and divert the topic down a more pleasant route, lucid dreaming. I wonder if those of us who have nightmares have always been prone ? I had night terrors right into my adult life and sleep walking was a real problem.
Interesting that garlic, as a substitute for statins, is thought to be useful. The amount of garlic that we consume should have sorted my cholesterol out many moons ago 
moving to Christchurch , Dorset
Dame Jenni Murray died due to dazzling headlights

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Most doctors would be happy with anything below 3 for the LDL (or 'bad' cholesterol) level.