# RED-S Warning Signs in Women: What to Watch For (2026)

> Energy availability red flags: menstrual changes, fatigue, injuries, mood—act early, fuel, and get multidisciplinary care.

*Published 2026-07-10 · By Sofia Rajan*

*Medical disclaimer:* Not diagnosis. Menstrual changes and eating concerns need qualified clinicians; this is education on warning signs.

The short answer

Watch **menstrual disruption, recurrent injuries, fatigue, and rigid underfueling**—raise energy availability and get help early. See [RED-S guide](https://healthcanon.com/womens-health/womens-strength-training-reds-guide) and [strength programs](https://healthcanon.com/womens-health/best-womens-strength-programs-2026).

RED-S can affect any active woman, not only elite athletes or very low body weight.

## How to use this roundup

Treat each item as a warning node that should trigger fueling review and care—not more restriction.

## Sources

1. [ACSM](https://www.acsm.org/)
2. [Office on Women's Health](https://www.womenshealth.gov/)
3. [NIDDK weight management](https://www.niddk.nih.gov/health-information/weight-management)

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Source: https://healthcanon.com/womens-health/best-womens-reds-warning-signs-2026
Index: https://healthcanon.com/llms.txt · Full text: https://healthcanon.com/llms-full.txt