Weighted blankets to improve sleep - do they work?

I often double up my duvet because I like the weight so it seems logical that it could work, thank you for commenting.

Never tried one, but I imagine I'd wake during the night feeling trapped or like I'm suffocating.  I need freedom to sprawl and can't tolerate anything getting in the way.

I got one this week in the autumn sale from Sumo. 2 nights in so far so good. I feel very relaxed when I'm under it. It could do with being a bit heavier though. I used it on the sofa last night and I felt calm. I have noticed, instead of having anxiety dreams, it's the same content of dream but a different outcome where I'm in control of the situation. The one I got was also made of cooling fabric which has been great. I usually love the weight of a duvet but get too hot.

It hasn't worked miracles but I have noticed a difference. 

The research is very unclear and obviously those selling them will bias the reports.

https://www.health.harvard.edu/mind-and-mood/anxiety-and-stress-weighing-heavily-at-night-a-new-blanket-might-help

Just like many things in life: no guarantees , some like them and others feel they are a waste of money. Some suppliers offer a money back guarantee if you find it unhelpful 

This one has the top rating on Amazon 97% give 5 stars even though not the best selling

www.amazon.co.uk/.../ref=sspa_dk_detail_1

There are not any good trials showing benefits in autism and those done were on children, but the Amazon reviews you posted seem very happy with that product

www.guysandstthomas.nhs.uk/.../20140716-weighted-blankets.aspx

I haven't personally but I have a friend who swears by it.

Certainly I sleep more deeply when I have 2 or 3 duvets on me so I imagine it would be of benefit.