Pillows

Pick pillow height to keep your neck level for the way you sleep. The research is thin; latex pillows have the most support for neck pain, and feather pillows the least.

• Evidence: Weak
• Low effort
• Low cost
• Works: 1–2 weeks

Why it matters

Your pillow fills the gap between your head and the mattress. If it’s too high or too low, your neck stays bent to one side or tipped forward or back all night. In a small lab study of 10 young adults, raising pillow height from 11 to 17 cm (about 4.3 to 6.7 in) increased pressure on the head and neck and bent the neck further back [6]. Height and shape seem to change neck alignment more than what the pillow is filled with [1].

Many people probably have the wrong pillow. In a study of 106 side sleepers, over half reported regular waking symptoms, an uncomfortable pillow or poor sleep on their own pillow [4].

How to do it

1. Know your main position. Notice how you wake up for a few mornings, or check sleep positions.
2. Side sleepers: go higher and firmer. The pillow has to fill the distance from your ear to the edge of your shoulder, so broad-shouldered people need more height. Ask someone to look at you from behind: your nose should line up with the middle of your chest, and your neck shouldn’t tilt up or down.
3. Back sleepers: go medium and lower. You want your head supported without your chin pushed toward your chest. Some people like a pillow with a slightly thicker edge under the neck. Small trials found no clear advantage for contour pillows over regular ones [3].
4. Stomach sleepers: go very low or none. A high pillow twists and bends your neck back at the same time. A thin pillow, or one under your hips instead, is the usual advice. We found no trial testing this.
5. Pick the filling. What to look for:
   • Latex (natural or synthetic rubber): springy, holds its height, the best results for neck pain in trials [1][3].
   • Foam, including memory foam: holds its shape; foam pillows performed about the same as people’s own pillows in one trial [3].
   • Polyester fibre: cheap and washable; also about the same as people’s own pillows [3].
   • Feather or down: soft and adjustable, but it flattens during the night. Feather pillows had consistently low comfort and sleep-quality ratings [3][4].
6. Give it a week. In the main trial, people tried each pillow for a week [3]. Rate your neck each morning, then decide.

Common mistakes

• Stacking two flat pillows. You end up with an unstable height that changes as they slide. One pillow of the right height is better.
• Buying for the shop test. Lying on your back in a shop tells you nothing about how a pillow works for side sleeping at 3 a.m.
• Keeping a pillow that’s lost its loft. If you fold it in half and it stays folded, or you keep punching it back into shape at night, it no longer holds your head up.
• Expecting a pillow to fix neck pain. It may help; in reviews, the gains were small [1][2]. Neck pain that lasts, spreads into your arm, or comes with numbness or weakness needs a doctor. See when to see a doctor.

Effect on your sleep score

We found no study measuring the effect of pillows on wearable sleep scores.

• Sleep quality: a 2021 meta-analysis found pillow design didn’t change sleep quality in people with chronic neck pain [1]. A 2025 review of 5 newer trials (239 people) found no significant difference in sleep quality either [2].
• Wake-ups: if neck pain or stiffness wakes you, a better pillow might reduce wake-ups. That’s plausible, not measured.

How confident: low. Expect a pillow to change how your neck feels in the morning, not your sleep stages.

Evidence

Rated Weak.

• A 2021 meta-analysis of 35 studies, 9 of them high quality with 555 people, found latex pillows reduced neck pain, waking pain and neck disability by small to moderate amounts, but didn’t change sleep quality [1].
• A 2025 systematic review of 5 trials (239 people with chronic neck pain) found only small, non-significant pain improvements, inconsistent disability results and no clear winner among latex, foam and standard pillows [2].
• A 2021 review of pillow-height research concluded that the right height for back or side sleeping can’t be set yet, because the evidence isn’t good enough [5].

Limits: almost all studies were in people with neck pain, not healthy sleepers. Trials were small and short, and used different pillows and measures [2]. The height study used 10 young adults and a computer model [6].

General information for healthy adults, not medical advice. If you have a sleep problem that lasts, read when to see a doctor. Sources checked 4 October 2026. Spot a mistake? Tell us.