Does lack of sleep cause inflammation?

Poor sleep can lead to inflammation, linked to heart disease, stroke, diabetes, arthritis, depressions and other chronic illnesses. It's been suggested that both too little and too much sleep may cause inflammation.

A recent study in the journal Biological Psychiatry reports that inflammatory markers were found in people who have sleep disturbance issues as well as long sleep duration. Suggesting that both too little and too much sleep may cause inflammation.

“It is important to highlight that both too much and too little sleep appears to be associated with inflammation, a process that contributes to depression as well as many medical illnesses,” said Dr. John Krystal, Editor of Biological Psychiatry.

Normal sleep duration is between 7 and 8 hours of sleep each night. The researchers reviewed 72 existing studies covering over 50,000 participants for possible links between sleep and inflammatory markers.

Michael Irwin, one of the researchers, stated that 'insomnia and sleep disturbances should be viewed as risk factors for inflammation, along the same lines as sedentary behaviour or an unhealthy diet.'

The US Centers for Disease Control and Prevention see lack of sleep as a public health epidemic. Sleep disturbances like insomnia can contribute to an increased risk of inflammatory disease and mortality.

HOW TO GET A BETTER NIGHT'S SLEEP GUIDE

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What makes hotel pillows so comfortable?

The best hotel quality pillows have a distinctive weight and feel and one of the main reasons is the filling. Hotels with the best pillows typically use a blend of luxury down and feather and they do so for good reason.

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Bedding size guide

DUVET SIZE GUIDE

These are standard UK bedding measurements so if you know your mattress size, you can easily work out which duvet size you need. (Width x length.)

UK sizes	Duvet size	Mattress size
Single	135 x 200cm (53 x 79")	90 x 190cm
Double	200 x 200cm (79 x 79")	135 x 190cm
King	225 x 220cm (89 x 87")	150 x 200cm
Super king	260 x 220cm (102 x 87")	180 x 200cm

US/CANADA BEDDING SIZES: Approximate matches to UK sizes are US King/UK Super king, US Queen/UK King, US Full/UK Double and US Twin/UK Single.

EUROPEAN BEDDING SIZES: Each size - Single, Double, King and Grand king - is a little larger than the UK equivalent.

Measure your mattress to see which size bedding you need: our UK v European v US mattress comparison guide.

DUVET TOG RATING GUIDE

Young children can overheat so if they are old enough to use a full size bed, we recommend using a single size 4.5 tog duvet.

Tog rating	Season / heat	Feel
2.5 tog	High summer / hot sleepers	Light thermal insulation
4.5 tog	Summer	Lower thermal insulation
9 tog	Spring & Autumn	Cosy medium heat
All season 13.5 tog	4.5 tog + 9 tog	Very warm
All season 11.5 tog	2.5 tog + 9 tog	Warm
All season 7 tog	2.5 tog + 4.5 tog	Lower warmth

DUVET FILL WEIGHT GUIDE

Our goose down duvets have high 700 fill power. Fill weight is measured in GSM (grams per square metre).

	Fill weight (not total duvet weight)
Single	All seasons - 788gsm 9 tog - 486gsm 4.5 tog - 302gsm 2.5 tog - 220gsm
Double	All seasons - 1168gsm 9 tog - 720gsm 4.5 tog - 448gsm 2.5 tog - 320gsm
King	All seasons - 1478gsm 9 tog - 911gsm 4.5 tog - 567gsm 2.5 tog - 400gsm
Super king	All seasons - 1671gsm 9 tog - 1030gsm 4.5 tog - 641gsm 2.5 tog - 480gsm

PILLOW SIZE GUIDE

Our pillows come in two sizes and provide medium support. (Width x length.)

Standard	50 x 75cm
King	50 x 90cm

BED LINEN SIZE GUIDE

Our fitted sheets are deep fit, up to 40cm / 15.7" mattress depth. And our duvet covers fasten with large, easy to use buttons. (Width x length.)

	Duvet cover	Fitted sheet	Flat sheet	Pillowcase (pair)
Single	140 x 200cm	90 x 190cm	180 x 275cm
Double	200 x 200cm	135 x 190cm	230 x 275cm	50 x 75cm (Standard)
King	230 x 220cm	150 x 200cm	275 x 275cm	50 x 90cm (King)
Super king	260 x 220cm	180 x 200cm	305 x 275cm

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