From NewScientist (14 July 2018):
Wearing a tie compresses veins in the neck, pushing blood into the skull, creating a pressure build-up that most likely crushes vessels and cuts blood flow, says Lüddecke.
In healthy people, a 7.5 per cent drop in blood flow in the brain is unlikely to lead to noticeable symptoms, says Steve Kassem at Neuroscience Research Australia in Sydney. However, it might create problems for smokers, older people or those with high blood pressure, he says. These could include headaches, dizziness and nausea.
One solution is to wear a looser tie, although this tends to look sloppy, says Kassem. “I think there’s probably enough room for us now to say, ‘Alright, maybe we should stop wearing ties altogether’.”
Yes! I’ve been saying ties are bad for us for nigh on forty years!
