Turns out that we don't all taste broccoli the same way.
By Jacinta Bowler
23 Jun 2016 - 12:54 PM UPDATED 24 Jun 2016 - 9:35 AM
The poster child for vegetable hatred, many a broccoli floret has been left on the plates of disgusted diners. Meanwhile others don’t understand how a mild-flavoured vegetable can create such strong feelings. Are the haters just picky eaters and haven’t gotten over their aversion to vegetables?
According to genetics, maybe not.
There’s a compound in broccoli that not everyone can taste – but it can make it bitter and basically unpalatable.
Different populations vary widely on how many people can taste the bitterness of broccoli - more specifically, glucosinolate compounds, which chemically resemble
phenylthiocarbamide (PTC). In England the non-taster percentage (or those that can’t taste PTC at all) is 31.5%, but for Native Americans it’s a crazy 98%.
So why do only some of us have this ability?
The genes of broccoli haters
On average, about 70% of us can taste something bitter in broccoli or PTC, but those with two copies of the bitter sensitivity gene are closer to 20%, and they are much more likely to hate it.
Scientists have known for a while that the gene hTAS2R38 plays a role in how bitter we perceive certain foods – such as broccoli and other cruciferous vegetables (cauliflower, bok choy and Brussels sprouts are also on that list).
The people with variations in gene hTAS2R38 taste these vegetables as bitter and horrible – whilst those with different variations in their genes don’t.
This is somewhat similar to what happens with coriander haters,
because to 13% of the population coriander tastes soapy. A different genetic allele (also called a variation) rs72921001 has been implicated in this case.