Are Electrolyte Supplements a Scam? Dr. Alan McCubbin Explains

Have we been thinking about sodium all wrong? Dr Alan McCubbin thinks we might have been..

Are daily electrolytes necessary, or is pre-race salt loading a complete waste of time?

In this episode, sports dietitian and lead sodium researcher Dr Alan McCubbin breaks down the real science of hydration and electrolyte replacement for endurance athletes. Plus, learn how to balance fluid intake with sodium loss, why salt capsules can trigger severe mid-race gut distress, and the truth behind common cramping myths.

This episode is brought to you by TriVelo Coaching. We help triathletes and endurance athletes train smarter to race faster. Your hosts are Australian Ironman Champion Gerard Donnelly and endurance coach Jordan Donnelly.

Time Stamps:

0:00 – Are Daily Electrolyte Supplements a Scam?

1:43 – How Your Kidneys Manage Sodium Deficits

4:40 – Does Pre-Race Sodium Loading Work?

8:04 – Why We Started Researching Sodium for Triathletes

19:37 – The 5-Hour Rule: When Sodium Actually Matters

23:33 – Why Blood Sodium Rises When You Sweat

26:36 – Is the 2% Fluid Loss Rule Outdated?