Dark chocolate is the only confectionery with a press team. "It's basically a superfood," people murmur, snapping off a square with the solemnity of someone taking a vitamin. Start with the word that sells it.
Antioxidants. The flavanols everyone cites are the cacao plant's own defence chemicals, and they barely survive your digestion. Rather than mopping up oxidation, they cause a little of it, a flicker of stress that mildly poisons your cells and forces your body to switch on its own repair machinery. The benefit, such as it is, comes from your system scrambling to neutralise a plant toxin. The marketing sells you the toxin and takes the credit for the cleanup.
Now the metals. Cacao is a bioaccumulator. It hauls cadmium up from the soil and picks up lead as the beans dry on roadside tarps. In 2022 Consumer Reports tested 28 dark bars and found both metals in every one. For 23 of them, an ounce a day pushed an adult past a recognised level of concern. Cadmium then settles into your kidneys for decades and sends no notification.
While it sits there, the oxalates in the same cocoa get to work building kidney stones, and the pesticide residues from intensive cocoa farming ride along uninvited.
And the crop itself is an ecological disaster, most of it grown on cleared West African rainforest, a good deal inside protected parks, much of it by child labour everyone deplores for a fortnight at a time.
So enjoy your square. Just retire the word medicine. You are eating a metal-laced, stone-building plant toxin, and calling the damage a health benefit.
My first time voting was 1986. If anyone would have suggested that, in fairness, we should allow millions of people to mail in ballots without any reason or identification or control, 99% or people would have just said “NO”! Our great country is being dismantled. So sad.
Brown rice is what you order when you want the waiter to know you have made peace with joylessness in exchange for health points. The arsenic is the twist nobody puts on the menu.
Rice has a problem unique among grains. It grows in flooded paddies, sitting in standing water for months, and it draws arsenic out of the soil roughly ten times more eagerly than wheat or barley. That arsenic concentrates in the bran, the grain's outer layer. White rice has the bran polished off. Brown rice keeps it, because the bran is where the fibre and minerals live. It is also, inconveniently, where the arsenic lives.
A 2025 analysis found brown rice carries around 24% more total arsenic and 40% more inorganic arsenic, the form classed as a known human carcinogen, than white. You upgraded to the wholegrain and quietly upgraded your carcinogen dose along with it.
Then the ecology, which nobody ever pins on rice, because rice looks so very innocent. Those flooded paddies are anaerobic, and the microbes thriving in them belch methane on an industrial scale. Rice cultivation produces something like 10% of all human methane emissions and roughly a fifth of agricultural methane. Cattle get filmed for documentaries about their burps. Rice quietly produces a tenth of the world's methane while flooding entire landscapes and hoarding arsenic, then takes its place in the salad bar wearing a wellness halo.
Cows are dragged through the climate courts every week. The rice paddy, doing serious damage of its own, sits in your grain bowl with the expression of something that has never done anything wrong in its life. Curious, isn't it, which foods we decide to interrogate.