We reveal the truth behind the pub nonsense you heard about your body.
01 HAIR GROWS BACK THICKER AFTER IT’S BEEN SHAVED
The myth - If you take a razor to that unsightly sprout on your back, it’ll regrow to look like you’re wearing a furry cape.
The reality - “It’s a myth,” says Dr Rob Hicks, GP. “Ordinary hair has a nice neat taper to it, but when you shave it and it starts to grow back you get a blunt end. This is what makes it appear more noticeable - but it’s no thicker.”
02 WEARING TIGHT UNDERPANTS MAKES YOU INFERTILE
The myth - Testicle-crushing undercrackers will strangle your plums and leave you firing blanks.
The reality - They won’t make you sterile, but tiny pants can affect your ability to have kids, and not just by repulsing women. “The male reproductive organs hang outside the body because sperm survive better if they’re cooler than body temperature,” says Toni Belfield from the Family Planning Association in the UK. “The average pair of Y-fronts won’t make a difference, but if you wear underwear that brings the scrotum up next to the body, it may affect sperm numbers.”
03 BALDNESS IS A SIGN OF VIRILITY
The myth - Shineheads are compensated by nature for their follicular deficiency by being awarded higher-than-average levels of testosterone - which means they have more swimmers than blokes with flowing locks.
The reality - “That’s not true,” says Jonny Harris, director of The Belgravia Centre, a leading hair-loss clinic in London. “Hair loss isn’t caused by excessive testosterone. It’s caused by receptors in the scalp being sensitive to dihydrotestosterone (DHT), which is formed when testosterone combines with an enzyme called 5-alpha reductase. If there’s more of the enzyme than there is testosterone, then there will be more DHT - and that will cause hair loss. But you don’t necessarily need high levels of testosterone to have high levels of DHT. There’s nothing that suggests you can tell anything about a person’s virility by looking at the hair on their head.” Sorry, baldies - you’re no more man than the next man!
04 SWALLOWED CHEWING GUM STAYS IN YOUR GUT FOREVER
The myth - Your body can’t process chewing gum so, if you swallow a stick, it jams in your gut and stay there.
The reality - You probably got this from your mate in the playground, just after you swallowed three jawbreakers. Well, it’s a load of rubbish. “It just passes through you,” says Bridget Aisbitt, a nutrition scientist from the British Nutrition Foundation. “Chewing gum will just get swept along with other food that’s in the gut at the same time.”
05 CRACKING YOUR KNUCKLES GIVES YOU ARTHRITIS
The myth - Twisting your fingers to make them crack will give you arthritis because it wears away the tissue around the joints.
The reality - “There’s no truth in it at all,’ assures Dr Hicks. “The worst you’ll do is give yourself a bit of swelling, and you may lose a certain amount of grip strength.” It turns out that cracking noise you hear is just the click of the joint being pushed out of position. But making a knuckle racket doesn’t do any lasting damage, much to the disappointment of everyone who can hear you.
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