Interleukin-6 in Athletes: What Your Blood Work Is Actually Telling You
Key Takeaways: Interleukin 6 in Athletes • Interleukin-6 (IL-6) in athletes should not be interpreted as a simple “inflammation number.”…
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Vitamin C in Athletes: What the Evidence Actually Says About Supplementation and Performance
Key Takeaways: Vitamin C in Athletes • Vitamin C is one of the most commonly used supplements in athletes, but…
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eGFR in Athletes: Why Your Result May Be Misleading
Key Takeaways: eGFR in Athletes • eGFR in athletes is frequently misinterpreted because standard creatinine-based formulas do not directly account…
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SHBG in Athletes: What Your Sex Hormone-Binding Globulin Results Actually Mean
Key Takeaways: SHBG in Athletes • SHBG matters because total testosterone alone does not always reflect biologically available testosterone. A…
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Homocysteine in Athletes: What Your Blood Work Is Actually Telling You
Key Takeaways: Homocysteine in Athletes • Homocysteine is not routinely measured in athletes, and athlete status alone is not usually…
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Free T3 in Athletes: What Triiodothyronine Really Tells You About Your Training State
Key Takeaways: Free T3 in Athletes • Free T3 is the biologically active thyroid hormone, and in athletes it can…
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Fasting Glucose in Athletes: What Your Blood Sugar Results Actually Mean
Key Takeaways: Fasting Glucose in Athletes • Fasting glucose in athletes should not be interpreted in isolation because recent training,…
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Free Testosterone in Athletes: Why the Bound Fraction Doesn’t Tell the Whole Story
Key Takeaways: Free Testosterone in Athletes • Free testosterone may provide clinically useful information when total testosterone alone does not…
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Triglycerides in Athletes: Why Low Values Are a Sign of Metabolic Fitness
Key Takeaways: Triglycerides in Athletes • Low triglycerides in athletes are often a reflection of training-related metabolic adaptations rather than…
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HDL Cholesterol in Athletes: What Your “Good Cholesterol” Actually Tells You
Key Takeaways: HDL Cholesterol in Athletes • Higher HDL cholesterol is common in endurance athletes, but HDL should not be…
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Free T4 in Athletes: What Your Thyroxine Level Actually Means
Key Takeaways: Free T4 in Athletes • Free T4 should not be interpreted in isolation in athletes, because training load,…
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Uric Acid in Athletes: What Elevated Levels Actually Mean — and When to Act
Key Takeaways: Uric Acid in Athletes • Elevated uric acid in athletes should not automatically be interpreted as a lifestyle-related…
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HbA1c in Athletes: Why Your Blood Sugar Marker May Be Misleading You
Key Takeaways: HbA1c in Athletes • HbA1c in athletes can sometimes be misleading because exercise-related physiology may influence the result…
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Sleep for Athletes: The Complete Guide to Sleep Disorders, Sleep Science, and Evidence-Based Recovery
Introduction: Why Sleep for Athletes Is a Performance Variable, Not a Lifestyle Choice Sleep is an important recovery and performance…
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Aldosterone in Athletes: What Your Blood Test Is Actually Telling You
Introduction: Why Aldosterone in Athletes Is Frequently Misinterpreted Aldosterone is a clinically important hormone. Many medications that affect blood pressure…
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LDH in Athletes: What Elevated Lactate Dehydrogenase Really Means in Your Blood Work
Introduction: Why LDH in Athletes Can Be Difficult to Interpret Lactate dehydrogenase is an unfamiliar marker for much of the…
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CK-MB in Athletes: Why This “Cardiac Marker” Routinely Rises After Hard Training
Introduction In clinical practice, I may occasionally encounter a situation in which cardiac markers need to be tested in an…
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Phosphate in Athletes: What Abnormal Values Actually Mean
Introduction Serum phosphate in athletes may provide clinically relevant information in blood work when interpreted in context. Phosphate plays important…
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The Cortisol Awakening Response in Athletes: What Morning Cortisol Reveals About HPA Axis Health and Overtraining Risk
Introduction In clinical sports medicine, the evaluation of training-related fatigue, recovery capacity, non-functional overreaching and overtraining syndrome remains a clinical…
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Magnesium in Athletes: What the Evidence Actually Shows About Deficiency, Muscle Cramps, and Supplementation
Introduction Magnesium in athletes has long been surrounded by a strong sports nutrition myth: that taking it as a supplement…
