What is REDs?
REDs stands for Relative Energy Deficiency in Sport. It is a clinical condition that occurs when there’s not enough energy (fuel) to support both your training and your body’s basic functions.
It’s not just about “eating less.” It’s a mismatch between energy intake and energy demand over time, which impacts up to 11 different systems in the body.
The Term Emerged in 2014...
REDs used to be called "The Female Athlete Triad" until 2014, when research emerged by the IOC (International Olympic Committee) that REDs does not only impact women. The term was changed from RED-S to REDs recently to emphasise that the condition can affect anyone, regardless of if they compete or train "in sport".
Our name will remain RED-Scue (the combo of RED-S & Rescue) to show that we've been here from the beginning and share how far REDs research has developed since!
Symptoms of RED-S
Low mood or irritability
Sleep issues
Frequent injuries
Low libido / reduced testosterone
GI issues (bloating, constipation)
Fatigue, even at rest
Poor recovery or stalled progress
Loss of periods (in women)
Long-Term Impacts
Reduced bone density → stress fractures
Hormonal disruption
Compromised immune function
Heart, gut, and mental health issues
Burnout + early retirement from sport
Which Sports Does it Affect?
Every sport and every body - REDs does not discriminate! Anyone can experience an energy deficit, even if you're not a high-performance or elite athlete.
Why Have I Never Heard of REDs?
Only 10.1% of GPs are aware of REDs and it often goes undiagnosed.
Research has found that over 67% of high-performance athletes suffer from REDs.
What Can you Do?
Fuel before, during + after rides - carbs are essential.
Avoid chronic calorie deficits - especially unintentionally.
Rest means more than recovery rides - full rest days matter.
Listen to your body - don’t ignore red flags.
Seek support - dietitians, coaches, and RED‑S-aware professionals.
Invest in REDs specific nutrition: our RED-Scue bites!
Follow us on Instagram for Daily REDs Information & Case Studies!