The Safe Sleep Seven: Your Complete Guide to Safer Bedsharing

What Is the Safe Sleep Seven?

The Safe Sleep Seven is a set of evidence-based criteria developed by La Leche League International, drawing on decades of research by Dr. James McKenna at the University of Notre Dame and Professor Helen Ball at Durham University. When all seven criteria are met simultaneously, the risk of bedsharing approaches that of crib sleeping.

This is not about being reckless with your baby's safety. It's about understanding that for millions of breastfeeding families worldwide, bedsharing is the biological norm — and when done correctly, it can be both safe and beneficial.

The Seven Criteria

1. Non-Smoker

Neither parent who shares the bed should smoke — not in the bedroom, not in the house, not at all. Smoking is one of the strongest independent risk factors for SIDS, regardless of where the baby sleeps. If either parent smokes, room-sharing with baby in a separate sleep surface (such as a bedside crib) is the recommended alternative.

2. Sober and Unimpaired

No alcohol, no sedating medications, no recreational drugs. Anything that impairs your ability to wake and respond to your baby makes bedsharing unsafe. This includes over-the-counter sleep aids, antihistamines that cause drowsiness, and any substance that affects alertness.

3. Breastfeeding Mother

Research consistently shows that breastfeeding mothers behave differently in bed with their babies compared to formula-feeding mothers. The breastfeeding mother instinctively adopts the protective C-curl position — her body curves around the baby, knees drawn up below the baby's feet, arm extended above the baby's head. This creates a safe microenvironment and prevents rolling.

Dr. McKenna coined the term "breastsleeping" to describe this inseparable biological connection between breastfeeding and bedsharing. The synchronized sleep cycles, the frequent micro-arousals, and the protective positioning are all part of an evolved system.

4. Healthy, Full-Term Baby

Your baby should have been born at or near full term (37+ weeks) and be in good health. Premature babies or those with health conditions may have different arousal patterns and may benefit from room-sharing in a separate sleep surface.

5. Baby Placed on Back

Always place your baby on their back to sleep. This is a universal safe sleep recommendation regardless of sleep location.

6. Lightly Dressed Baby

Overheating is a risk factor for SIDS. When bedsharing, your body provides additional warmth, so dress your baby more lightly than you would for solo sleeping. No swaddling — baby's arms and legs must be free to move and signal.

7. Safe Sleep Surface

This is where the physical environment matters enormously:

This is where a purpose-built family bed makes a significant difference. A dedicated family bed like those from FamBed eliminates the gap problem entirely with a single, continuous mattress surface from 230 to 360 cm wide. The firm mattress meets safety requirements, and the removable, washable cover addresses the practical reality of sleeping with little ones.

What the Research Says

The landmark Blair et al. (2014) study, published in PLOS ONE, analyzed data from two large case-control studies and found that when hazardous circumstances were removed (smoking, alcohol, drugs, sofa-sleeping), there was no significant increased risk of SIDS for bedsharing infants (adjusted odds ratio: 1.1, 95% CI: 0.6–2.01).

This finding is crucial because it demonstrates that the risk traditionally attributed to bedsharing is actually attributable to the hazardous circumstances that sometimes accompany it — not to the act of sharing a bed itself.

Making It Work for Your Family

The Safe Sleep Seven isn't a rigid rulebook — it's a framework for informed decision-making. Every family's situation is different, and the goal is to give you the knowledge to make the safest possible choice for your circumstances.

If you meet all seven criteria, bedsharing can be a beautiful, biologically normal way to sleep with your baby. If you don't meet one or more criteria, room-sharing with baby in a separate sleep surface is the recommended alternative.

The worst-case scenario is falling asleep with your baby unintentionally on a sofa or armchair. This is far more dangerous than planned, intentional bedsharing in a safe environment. If there's any chance you might fall asleep while feeding, it's safer to do so in a prepared bed than on a sofa.