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It might be more than just a lack of sleep
In the PD group receiving resistant starch, but not the PD group receiving dietary instructions, significant improvements were observed from baseline to the end of the intervention in non-motor symptoms (NMSS) and depression scores (Beck Depression Inventory)
Some people do, using injections to correct low levels and oral supplements for maintenance in between
What the Evidence Actually Shows It is important to be direct about the state of evidence
The mechanism is well-established
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