Can I ski while pregnant?

The verdict

This is a page where the honest answer is that two national bodies read the same evidence gap and landed in different places, and you should know which one you are following.

The NHS lists downhill skiing in a group of activities that "should only be done with caution" because "falls carry a risk of damage to your baby". The other members of that group are horse riding, ice hockey, gymnastics and cycling. It is a caution, not a prohibition.

ACOG is firmer. Its patient guidance lists activities that may result in a fall and names downhill snow skiing first, alongside water skiing, surfing, off-road cycling, gymnastics and horseback riding, under the heading of exercises to avoid during pregnancy.

Tommy's sits with the NHS in tone and with ACOG in substance: any exercise or activity where there is a risk of falling, such as skiing, climbing or horse riding, can be risky, because your growing bump alters your centre of gravity and makes it harder to keep your balance.

Why the gap exists

Nobody has run a controlled study of skiing in pregnancy and nobody is going to. What all three bodies are reasoning from is a physiological change they can measure and a consequence they cannot quantify.

The measurable part is your centre of gravity. ACOG explains it directly: the extra weight in the front of your body shifts your centre of gravity, which places stress on joints and muscles, especially in the pelvis and lower back, and because you are less stable and more likely to lose your balance, you are at greater risk of falling. It also notes that pregnancy hormones relax the ligaments supporting your joints, making them more mobile and more prone to injury.

The unquantifiable part is what a specific fall does. A low-speed sit-down on a nursery slope and a high-speed edge catch on a mogul field are the same category to a guideline and completely different events in reality. Guidelines cannot make that distinction, so the cautious ones collapse it into "avoid" and the less cautious ones into "with caution".

Altitude is a separate limit, and the numbers differ

Most people asking about skiing are also, without realising it, asking about altitude, and here the guidance carries actual numbers that do not match.

The NHS says do not exercise at heights over 2,500 metres above sea level, because you and your baby are at risk of altitude sickness. Tommy's repeats the 2,500 metre figure and adds a qualifier: avoid exercising at high altitudes over 2,500 metres unless you are used to it, check with your midwife or doctor first, and if you are exercising at altitude, wait a few days to let your body adjust to the lower oxygen levels.

ACOG uses feet and a lower ceiling. Its patient guidance says to avoid activities performed above 6,000 feet if you do not already live at high altitude, which is roughly 1,830 metres. Committee Opinion 804 explains the basis: women living at sea level were able to tolerate physical activity up to altitudes of 6,000 feet, suggesting this altitude is safe in pregnancy, although more research is needed, and women who reside at higher altitudes may be able to exercise safely above it.

The practical consequence is awkward, because a great many European ski resorts sit between those two numbers. Val d'Isere, Tignes and Zermatt all have lift-served terrain well above both. If you are following ACOG you are restricted at most alpine resorts. If you are following the NHS you are restricted at the high ones.

Snowboarding, cross-country and the rest

No health body distinguishes snowboarding from skiing, so the same reasoning applies. If anything the fall pattern differs: snowboarders fall backwards onto the tailbone and forwards onto the wrists more often, and neither is an abdominal impact, but the underlying point about balance and reduced stability is identical.

Cross-country skiing is the interesting exception and no named body rules on it separately. It is a low-impact endurance activity performed on flat or rolling terrain at low speed, which is a very different risk profile from downhill, though it is often done at the same altitude.

Sledging and tobogganing attract no published guidance at all. Spelling that out is more useful than inventing a rule: nobody has assessed them.

If you are going anyway

Plenty of people go to the mountains pregnant and do not ski. The trip is still available to you. Where you do intend to be on snow, the parts that are within your control are the ones worth attending to.

• Terrain and speed, which determine what a fall actually is, are entirely your choice.
• Resort altitude is a bookable variable, not a fixed one.
• Travel insurance is the practical failure point. The NHS advises checking that your policy covers pregnancy-related medical care during labour, premature birth and the cost of changing your return date. Winter sports cover and pregnancy cover are usually separate clauses and both need to be present.
• The general NHS exercise advice still holds: you should be able to hold a conversation while exercising, and if you become breathless as you talk you are probably working too hard. At altitude that test triggers earlier.

The short version

There is no evidence that skiing harms a pregnancy and no evidence that it is safe, and the two most-quoted bodies have split the difference in opposite directions. Decide which risk framing you are using deliberately rather than by accident, and treat the altitude figures as the harder, more specific limits they are.