It would be reassuring to be able to assume that when your Doctor prescribes a drug, it's because he thinks it is the best one for your condition, guaranteed to help you get better.  But that is only a dream of the ideal.  In actual fact, quote:

In the world of medicine, "key opinion leader" is the somewhat Orwellian term used to describe the senior doctors who help drug companies sell drugs.

Read the report in the British Medical Journal, and listen to the revealing video of a former drug rep plumbing the depth of this disgraceful shill.  These influential Doctors are PAID to represent to their peers that recent medications are effective and safe - when all they may be is new and unproven.

Key opinion leaders: independent experts or drug representatives in disguise?

I  have been warning for years of the effects of blood pressure medication and cholesterol lowering medication on the function of the brain.   Now comes a theory explaining WHY lowering cholesterol in particular may affect function to the point of being a causative factor in the increase in Alzheimer's.

The villain in the onset of Alzheinmer's disease is now known to be tangles of amyloid plaque;   it appears that this amyloid is an emergency response on the part of the body to a lack of sufficient cholesterol.

If you would like an accurate road map, Dr. Lorin's book will provide it:

Author/dentist Henry Lorin watched helplessly as his wife's father developed Alzheimer's disease, while his own father did not. The two men were the same age and very similar medically, except for one key health factor. Dr. Lorin then spent years studying all the medical research, utilizing the clues and insights gained from his family's experience. The result? He is able to show that this one factor is the true key to Alzheimer's. Dr. Lorin's book reveals that factor and the simple steps needed to prevent the disease.