My guess would be because they're misinformed I know people who take statins merely because "their doctor told them to..."

Punch in "statins profitable" in your search engine... Here's a bit from the first result I got...

"Cholesterol-lowering drugs have been the most successful medicines in history. Last year, they racked up $33 billion in sales around the world. Just one drug, Pfizer’s (PFE) Lipitor, earned $13.6 billion. But there are serious questions about whether these drugs are being overused and whether they are as safe as most people—and doctors—believe. And now Congress is starting to ask those questions, too."

http://ctwatchdog.com/2009/09/22/sta...lowering-drugs

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I have been taking Vitamin D and have found that it makes me extremely physically fatigued and also very tense/stressed/nervous. I am also taking hydrocortisone. I was thinking that with time that this would pass but hope I am not doing harm or making it worse. I am new to this forum so sorry if I posted this in the wrong place. I don't even really know what my actual issue is, just thought that this might give some hint. Thanks

Hydrocortisone is often used to treat adrenal fatigue.

If you look at the symptoms for Adrenal Fatigue you may find some of them familiar.

Raising Vitamin D improves muscle function and therefore you should, as your vitamin D status corrects find it easier to get around and be more energetic.

One of the other things that happens as vitamin D status rises is your body is better able to absorb calcium.

Calcium is used in the brain by astrocytes to communicate with neurones.
The calcium excites the neurones.
In order to counterbalance the excitatory effect of calcium the brain uses magnesium to calm the neurone.
Unfortunately the diets of most US adults (and same in the UK) is insufficient in magnesium.
Most of us require 5~10mg per kg of IDEAL body weight. So 75kg weight requires 375~75-mg ,magnesium daily.
If you are a typical US adult your intake will be around 300mg/daily.
So increasing magnesium intake will help reduce the tense/stressed nervous feelings.
Krispin for magnesium information
Albion Mineral patent magnesium as krispin recommends Code WAB666 saves $5 at IHERB. I use IHERB as their shipping to UK is cheaper you may find others cheaper in US.
Magnesium Chloride for information on Transdermal magnesium intake and other information.

Swanson's magnesium oil Magnesium chloride if you just want to chuck it in your bathwater is available in 25kg sacks from agricultural merchants.
If you are going for a relaxing bath in dead sea salts remember this is RELAXING so before bedtime, not early in the day or you'll be nodding off.

Thanks I already take plenty of magnesium malate a day, enough for stomach upset actually. I have been told I have an overactive immune system before. I am just hoping if I tough this out it will fix me.

I am taking the HC for adrenal fatigue. Even thou my adrenal output didn't seem that bad via bloods, I have all the symptoms. So we are tying it.

Perhaps using the transdermal route for magnesium would be more effective for you then.