01/30/2026
How Nutrition Impacts Athletic Performance
I created this resource to highlight how inadequate or inappropriate nutrition can directly and indirectly affect athletic performance, recovery, and long term participation.
One important concept from an applied perspective:
Malnutrition in athletes is multi contextual.
It is not limited to under eating. It can also include:
• Over fueling relative to training demands
• Adequate caloric intake with poor nutrient density
• Intentional or unintentional restriction
• Chronic low energy availability
From a performance and health standpoint, chronic under fueling can impair training adaptation, increase injury risk, and negatively impact hormonal, bone, immune, cardiovascular, metabolic, and cognitive function key considerations in Relative Energy Deficiency in Sport (RED-S) and the Athlete Triad across both female and male athletes.
Conversely, inappropriate over fueling can also compromise performance through reduced movement efficiency, altered strength to weight ratio, GI distress, recovery limitations, and psychological load all of which can limit an athlete’s ability to train at full capacity.
Effective nutrition is not about extremes. It’s about context, timing, and alignment with training demands.