I
hate the spiel when Primal is being flogged and, sadly, Steve comes out with some of the shadiest phrasing when he's on.
He was pushing his magnesium tablets and said "Yes, you can get magnesium from leafy greens but you don't know if they've been grown in soil". Just hints at this and says that a pill - only my pills, of course - is the answer. Magnesium deficiency can be a problem. You see it in sheep, where the lush grass has grown fast in wet, warm weather and the sheep process it too quickly to get the magnesium into their system (the "staggers") - but sheep eat
one thing, mainly. If he was slamming hydroponics as a growing method by implication, he's on dodgy ground too.
I just hate the push of these companies who schill powders (e.g. Huel) and tablets. The answer is almost always to "eat the rainbow" and have a sensible approach to food. If you have a noticeable deficiency that affects you, your NHS doctor might suggest a supplement as a remedy (usually saying "buy quality", which is a nightmare to understand) but my limited experience is that doctors are ambivalent about the proven medical benefits of
any dietary supplements, mineral or oil.
If Steve really wanted to "fix the NHS" he'd create some form of "Nutrition Academy" and get into schools to increase the education about diet. Push pills, by all means, compete in the mass and growing market, but cut the righteous saviour complex.
In my opinion.