Industry brief / PN—INSIDER
PN—INSIDER · 15 September 2025

CBD Mistake

Dr. Scott Gillham's latest research reveals a critical gap in CBD supplement safety for athletes.

Dear Coaches,

Today we'll cover why broad-spectrum CBD supplements pose hidden WADA risks for your athletes, key job opportunities at Premier League clubs, and evidence-based nitrate supplementation with third-party tested products.

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Expert Opinion

CBD Mistake

Dr. Scott Gillham's latest research, published in Medicine & Science in Sports & Exercise, reveals a critical gap in CBD supplement safety for athletes.

His study tracked 36 healthy individuals taking a broad spectrum CBD supplement for 10 weeks. The product was third-party tested and contained no THC.

Source: Performance Nutrition Network

The findings?

WADA-prohibited cannabinoids appeared in participants' urine.

The data:

The supplement contained only "trace concentrations" of CBG according to its analysis. However, after 10 weeks of daily use at 150mg, these trace amounts accumulated to detectable levels.

Read the paper here →

Exercise amplified this effect.

Current testing protocols for CBD products don't predict what happens in the human body over extended use. Certificate of analysis results don't account for bioaccumulation or exercise-induced mobilisation.

Gillham's conclusion: "Athletes should avoid consuming broad-spectrum CBD products, given the potential associated anti-doping risks."

Dr. Scott discussed this research in detail on the Performance Nutrition Network. You can find out more here.

WATCH INTERVIEW VIA THE PERFORMANCE NUTRITION NETWORK→

Resource Roundup

News & Resources

Free Webinar

Hexis free webinar on how to integrate GPS into personalised nutrition.

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Brentford FC Hiring

Brentford FC is looking for a Lead Performance Nutritionist.

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Fulham FC Hiring

Fulham FC are hiring an academy performance nutritionist.

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Last Weeks Issue

Dr. Louise Sutton observed thousands of students throughout her career.

WHAT SEPARATES THE BEST? →

LIVE NEWS ON LINKEDIN →Performance Tech

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Current evidence suggests nitrate supplementation may improve exercise performance, though individual responses vary considerably. IOC consensus statement indicates potential improvements of 1-3% in time trial performance and 4-25% in time to exhaustion, primarily in submaximal to moderate-intensity endurance activities.

Critical consideration for performance nutritionists:

Unlike emerging nitrate gel alternatives (such as Styrkr Nitro), Beet It maintains Informed Sport certification.

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Thanks for reading!

Written by Alfie Gordon

Published first to ~1000 performance nutrition leaders at top-flight clubs, federations, WorldTour teams and the sector's brands. Subscribe free →

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