Many people with Parkinson's disease (PD) or multiple system atrophy (MSA) develop autonomic failure — meaning the part of the nervous system that automatically regulates blood pressure stops working properly. This creates a frustrating catch-22: blood pressure drops dangerously when they stand up (orthostatic hypotension, or OH — causing dizziness, fainting, and falls), yet climbs too high when they lie flat overnight (supine hypertension, or SH — raising stroke and heart risk). Most drug treatments help one problem while worsening the other. This small randomised trial, called the Heads-Up trial, tested a drug-free approach: simply raising the head of the bed so the person sleeps on a gentle slope, using gravity to even out blood pressure across the day-night cycle.
The trial enrolled 20 people with PD or MSA who had both OH and SH. Participants were randomly assigned to one of two programmes of gradually steeper bed angles — either 1°, 6°, then 12° (the lower scheme, with 1° serving as a near-placebo), or 6°, 12°, then 18° (the higher scheme). The main finding was nuanced: tilting the bed did not consistently lower peak overnight blood pressure, but it did improve several other measures of blood-pressure control — including the pressure reading first thing in the morning before getting up, how smoothly blood pressure varied across the 24-hour day, daytime blood pressure, and — critically — the drop in pressure when standing. That standing drop (the core of OH) became smaller, meaning participants could tolerate standing better. Tolerability, however, declined with angle: everyone managed 6°, 80 % stayed with 12°, but only 60 % could sustain 18°.
For someone living with Parkinson's who struggles with dizzy spells on standing, this is encouraging evidence that a simple, cost-free adjustment — raising the head of the bed by roughly 10–30 cm using wedges or adjustable bed legs — may help without adding another drug. The study is small (20 people) and is a phase I/II tolerability and proof-of-concept trial, not a definitive efficacy study, so it cannot yet change guidelines. But the findings support raising the idea with a neurologist or autonomic specialist, particularly for anyone caught in the OH/SH catch-22. A moderate angle around 6°–12° appears the sweet spot between benefit and comfort.