Part 1: Cruciferous Vegetables
One of the most common questions i’m asked is, “What should I eat?”. It’s a reasonable question – and also one that’s become strangely complicated. Rather than rules or rigid plans, I usually start with a handful of foods I like people to eat most days, and then adapt from there.
Why?
These slightly bitter vegetables punch well above their weight nutritionally. They support digestion, build gut health, help the liver do its job, and there’s good evidence for their role in reducing cancer risk.
Oh, and they can be really tasty, despite what childhood memories of overcooked broccoli might suggest. This is a varied family of vegetables, with plenty of options to suit different tastes and cooking styles.
What are they?
Cruciferous vegetables include kale, cauliflower, broccoli, Brussel sprouts, cabbage, watercress, turnip and radish.
What makes them special?
When these vegetables are chopped, chewed or lightly cooked, their sulphur-containing compounds are converted into beneficial chemicals such as indoles and isothiocyanates (including sulforaphane). These help the liver metabolise compounds – including oestrogen – and have anti-inflammatory and anti-cancer properties.
They’re also high in fibre, supporting gut health, and their naturally bitter taste helps stimulate digestive enzyme secretion. Different colours provide a wide range of phytochemicals, feeding beneficial gut bacteria and supporting overall health.
Cruciferous vegetables are a good source of folate, vitamin C, vitamin K and calcium. Cooking method matters: boiling reduces nutrient availability, so lightly steaming, frying or baking tends to be a better option.
A couple of caveats
If you have hypothyroidism alongside low iodine status, it’s sometimes suggested to be cautious with cruciferous vegetables due to their goitrogen content. In reality, you would need to consume very large quantities for this to become an issue – and for most people, these vegetables remain a net positive.
As always, individual tolerance matters more than rigid rules. Often, eating these vegetables regularly builds a taste for them and you start wanting to eat them daily.
Ways to eat them
Where to start? A proper cauliflower cheese, a crunchy slaw, a colourful salad, a spicy curry, braised red cabbage in winter, or broccoli and a little chilli stirred through pasta – delicious.
This is not about perfection. It’s about being curious and experimenting. Regularly eating foods the quietly support health without turning eating into a project.
Higdon JV, Delage B, Williams DE, Dashwood RH. Cruciferous vegetables and human cancer risk: epidemiologic evidence and mechanistic basis. Pharmacol Res. 2007;55(3):224-236.
Verkerk R, Schreiner M, Krumbein A, et al. Glucosinolates in Brassica vegetables: the influence of the food supply chain on intake, bioavailability and human health. Mol Nutr Food Res. 2009;53 Suppl 2:S219.
Zhang X, Shu XO, Xiang YB, et al. Cruciferous vegetable consumption is associated with a reduced risk of total and cardiovascular disease mortality. Am J Clin Nutr. 2011;94(1):240-246
