As far as the health benefits that are being claimed by those championing meso-nutrients – like improved immunity – we don’t have the human data to show the benefits of this approach. At this stage, I can’t really recommend these compounds as providing any sort of health benefit because we don’t have enough research to suggest what effects they might have in concentrated forms.
If you’re worried about improving your immunity as we enter the cold and flu season, I’d suggest focussing on eating a good variety of brightly coloured fruits and vegetables. On top of that, zinc is a great nutrient for immunity, so look to add foods like beef, lamb, shellfish, oysters, pumpkin seeds and cashews to your diet. Finally, good gut health is something that’s crucial for your immune system – so make sure that you’re getting adequate fibre in your diet.