Mark Gilbert

Mark Gilbert BSc (Nutrition)
Mark is an expert in sports nutrition and dietary supplements. He has over 20 years of experience working with the biggest names in the bodybuilding industry.


Q. What is beta–alanine and how does it work?

A. Beta-alanine is a non-essential, non-structural (it doesn’t get used to build proteins like muscle) amino acid. It increases the body’s carnosine levels. This allows the body to

Q. Mark, do the top pros actually use the supplements they endorse, or do they just use steroids? No bullshit, Gilly!

A. Anyone who’s been around a while in this industry knows plenty of guys use steroids. But virtually all of them also use

Q. I’m using a pre-workout powder and get unbelievable energy from the stuff. I read that it contains geranium in it, which is supposed to be responsible for the real kick you get. Have you used geranium, and, if so, what’s your take on it?

A. Recently,

Q. Can creatine be used pre-contest?

A. Certain people and companies have convinced much of the weight-training public that creatine somehow makes you look “soft.” But creatine is stored in muscle, along with the associated water, so how could it affect

Q. How does synephrine work, and why the hell did Health Canada ban it from being included in any fat burners?

A. Synephrine is the principal active extract found in the herb Citrus aurantium (bitter orange). Most synephrine found in supplements is as part of Citrus

Q. I saw you on the video for the Dorian Yates Blood & Guts seminar that MUSCLE INSIDER put on. What would you say were the top 5 best training secrets you learned?

The one main thing I learned was that Dorian is a true professional who not only loves weight

Q. Do you think the side effects in the media for steroids are under reported or over reported?

A. I’ve worked for two of the world’s biggest pharma companies and acted as an expert witness on steroids and supplements to the police and the courts

QUESTION: I know you work with some of the top names in the U.K. so I ask you the honest truth: Do Olympic athletes really take supplements?

ANSWER: The IOC (International Olympic Committee) has stated that "food supplements can enhance athletic performance

QUESTION: What is the best fat burning ingredient out there?

ANSWER: First of all, let me say that the "best fat-burning ingredient" is a high-protein, reduced-calorie diet, that restricts sugar and starchy carbs...but as far as things you can take to give

QUESTION: How much protein do bodybuilder need while cutting?

ANSWER: When researchers put athletes on a weight-loss diet, a group that ate 2.3 grams of protein per kilo bodyweight (35% of calories in
their diet were from protein) lost almost no lean body