The Claim

Low energy availability and low carbohydrate availability are key factors that influence the development of symptoms associated with both overtraining syndrome and relative energy deficiency in sport (RED-S) in athletic populations.

Source: Overtraining Syndrome (OTS) and Relative Energy Deficiency in Sport (RED-S): Shared Pathways, Symptoms and Complexities

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
1score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Not eating enough calories or carbs can lead to serious health and performance problems in athletes, like burnout and hormonal issues.

See the scientific wording

Low energy availability and low carbohydrate availability are key factors influencing the development of symptoms associated with both overtraining syndrome and RED-S in athletes.

What the research says

1 study

  1. Study: Overtraining Syndrome (OTS) and Relative Energy Deficiency in Sport (RED-S): Shared Pathways, Symptoms and Complexities

    The study found that when athletes don’t eat enough calories or carbs, especially during heavy training, they often show symptoms of overtraining or RED-S. This supports the idea that not fueling properly is a key reason these problems happen.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.