The term ‘plant-based diet’ is new and what does it mean? Game Changers did not make this clear. If I took my dietitian hat off, the main message I received was to eat lots of vegetables and maybe some beans, absolutely no meat and I’d be good to go. But the reality is far more complex than that. It is true that a vegetarian or vegan diet confers many health benefits (lower risk of heart disease, stroke, diabetes, lower body weight). However, this diet must be carefully planned or serious deficiencies from lack of key nutrients such as iron, Vitamin B12, zinc, iodine and omega-3 fatty acids can develop.

The long-term consequences of deficiencies include anaemia, osteoporosis (brittle bones), loss of nerve function, depression and long-term cognitive impairment. At vital times such as pregnancy and breastfeeding, inadequate omega-3 fatty acids (found in fish, chia, flaxseeds, walnuts, microalgae) can impact a baby’s brain development. Serious stuff, no?

Athletes have far greater requirements than the general population, and risk inadequate iron, energy and protein intakes. This impairs recovery, increase injury risk and has long-term health consequences. The female athlete is risk of consequences including irregular periods, infertility, osteoporosis and a host of cardiovascular and mental health side effects.

None of these risks were mentioned, which is why it’s best to seek advice from a trained health professional, rather than Hollywood. I will give kudos to Game Changers for using some pretty good party tricks, such as finding the strongest man in the world who only eats plants to move some heavy stuff, measuring nocturnal erections of college students and centrifuging blood after a meat vs vegetarian meal. All very convincing, but a little lacking in scientific depth.

It’s a little extreme to compare the meat industry to the tobacco industry. Whilst the science does tell us that a diet heavy in processed meats can increase the risk of certain cancers, meat isn’t out to get us. I’m confused, aren’t we the ones hunting down the animals and putting them on our plates? My issue is the demonising of one food. Our health crisis is related to myriad factors, including added sugars, salt, overall saturated fat, caloric intake and lack of enough of the good stuff, mainly fruits, vegetables and whole grains. Even that is oversimplifying matters.