We have all heard the usual pregnancy nutrition advice:
avoid alcohol, limit caffeine, steer clear of raw fish and blue cheese.
But in reality, even these basics are often misunderstood by the general public.
For athletes, the picture becomes far more complex.
Standard advice like “you’re not eating for two” or
“eat at maintenance until the third trimester, then add 300 calories”
doesn’t translate well in a high-performance context.
Most athletes do not know what their actual maintenance level is,
especially once training volume, intensity, and energy demands are factored in.
And for those at risk of Relative Energy Deficiency in Sport (RED-S),
this lack of precision can become a serious concern — one I see time and again in practice.
Pregnancy nutrition for athletes is not simply about eating enough.
It is about adapting to a constantly shifting physiological state,
while supporting performance, recovery, maternal health, and foetal development.
I work closely with athletes to review their nutrition
where appropriate — and make realistic, evidence-based adjustments.
These plans consider everything from nausea, cravings, and food aversions to heartburn and changing energy needs.
In some cases, especially with a history of disordered eating, tracking is not the right approach.
That is where a clinically-informed, athlete-centred strategy becomes essential.
By outsourcing the nutrition planning to someone who understands both obstetrics and high-performance sport,
athletes can focus on thriving — without added mental strain or risk.
And postnatal nutrition brings another layer.
Metabolism changes again, and breastfeeding introduces entirely new requirements.
(More on that in a future post.)
If you are an athlete, coach, or member of a support team and want to understand how to optimise nutrition during pregnancy and after birth, I would love to hear from you. This is a conversation we need to be having more often.
But there’s something even more important to consider:
its lasting effects on pregnancy and your baby’s health.
When your body isn’t getting the fuel it needs, your hormones shift.
And that delicate balance is vital for conception and carrying a healthy pregnancy.
Without it, risks increase, like:
• Miscarriage or preterm birth • Babies not growing as expected • Pregnancy complications like hypertension and preeclampsia
Here’s why. RED-S doesn’t just affect your cycle. It impacts the quality of your uterine lining, how well the placenta develops, and how your blood vessels function — all of which are essential for a healthy pregnancy.
One study published in Sports Medicine (2019) confirmed it.
RED-S can have effects that reach far beyond the track or the field.
That’s why we need to act early.
Caring for RED-S isn’t just about helping athletes compete at their best.
It’s about helping them thrive as future parents too.
And that’s my focus.
I work with elite female athletes to optimise their preconception health through a blend of sports medicine and personalised obstetric care.
Together, we:
• Detect energy deficiency before it becomes a risk • Restore hormonal health and metabolic function • Strengthen uterine and placental health • Build pregnancy-safe plans tailored to each athlete’s unique needs
Because preparing for motherhood starts well before the first positive test.
Let’s connect and create a plan to support your athletes now and their growing families in the future.