Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Nutrition Encyclopedia

Best Foods for Energy and Performance

Persistent low energy has a lot of possible causes, but nutrition is one of the more fixable ones — iron and B12 status affect how well oxygen gets carried around the body, thyroid function governs metabolic rate, and protein and creatine support muscle performance directly. This hub gathers the foods, compounds and lab markers most relevant to energy levels and physical performance.

Foods that support Energy & Performance

The other 18 foods tagged for Energy & Performance

Key compounds linked to Energy & Performance

Biomarkers worth tracking

Recipes to try

Common questions

How do I know if low energy is diet-related? It’s genuinely hard to tell from symptoms alone — fatigue overlaps with dozens of causes, from poor sleep to thyroid problems to iron deficiency. The biomarkers listed above (ferritin, TSH) are the kind of blood tests a doctor would typically check to rule nutritional causes in or out.

Is creatine only useful for bodybuilders? No — creatine has a solid, broad research base for muscular strength and power output across many types of exercise, not just bodybuilding, and food sources like meat and fish provide meaningful amounts even without supplementation.

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