The Claim

Overtraining syndrome (OTS) is associated with systemic inflammation, characterized by elevated levels of pro-inflammatory cytokines such as IL-6, TNF-α, and IL-1β, which contribute to immune dysfunction, muscle atrophy, insulin resistance, and increased susceptibility to infections in endurance athletes and military personnel.

Source: Beyond physical exhaustion: Understanding overtraining syndrome through the lens of molecular mechanisms and clinical manifestation

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.

How it works
1 study reviewed
In plain English

When athletes or soldiers train too much, their bodies can go into overtraining mode, which causes hidden inflammation that weakens the immune system, makes muscles shrink, messes with blood sugar, and makes them more likely to get sick.

See the scientific wording

Overtraining syndrome (OTS) is associated with systemic inflammation, characterized by elevated levels of pro-inflammatory cytokines such as IL-6, TNF-α, and IL-1β, which contribute to immune dysfunction, muscle atrophy, insulin resistance, and increased susceptibility to infections in endurance athletes and military personnel.

What the research says

1 study
  1. Study: Beyond physical exhaustion: Understanding overtraining syndrome through the lens of molecular mechanisms and clinical manifestation

    The study looks at how too much exercise without enough rest can cause long-term inflammation and weaken the immune system, which matches the claim.

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.