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6th June 2018
01:59pm BST

Is protein powder better than real food?
No.
Protein shakes are a hugely convenient tool if food is impractical - e.g. pre or post-workout, when travelling or if you're busy at work.
Whey in particular is rich in leucine, the most potent of the branched chain amino acids (BCAAs), and is rapidly-absorbed by the body.
With the exception of this convenience, however, real food is always the priority.
Your appetite is regulated by the amount of chewing you do, so liquid nutrition alone will not cut the mustard.
Protein sources such as salmon, turkey, chicken and steak also contain many beneficial micronutrients that you won't obtain from supplements.
For instance, fish oil and B vitamins boost your brain function and energy production.
Is too much protein bad for my kidneys?
No.
Too much food of any kind could cause obesity if you consume excessive calories. Obesity is linked to poorer kidney function.
Beyond this, there is very little evidence that high protein intake damages your kidneys.
A study conducted by the University of Connecticut found no link between protein intake and kidney issues in healthy people.
Those with pre-existing kidney problems should consult their GP prior to taking any supplements or beginning any fitness regime.
Is whey protein a steroid?
If your Mum, wife, mate or girlfriend has thrown this accusation at you, rest easy knowing that protein powder is not an anabolic steroid.
That's not to say it won't help you get jacked though.
As above, the amino acids that comprise protein are absolutely essential for building, repairing and growing muscle mass after resistance training.
Don't expect to get guns like Popeye from just downing a few shakes, though.
Your training needs to progressively overload each muscle group, and you need sufficient sleep in order to recover.
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