‘Protein hype has done so much damage to this country’: The real health crisis hiding behind wellness trends

From protein-packed snacks to viral ‘what I eat in a day’ videos, we’re more obsessed with food than ever – but eating worse than we have in decades. Nutritionist Rhi Lambert explains why fibre, not protein, is the real problem – and what Britain has got so wrong about how it eats, writes Hannah Twiggs