what secrets lie behind discover new adventures in 360 degree and explore fascinating world heritage sites. d.w. world heritage 360. get here now. welcome. in good shape. coming up, high heels. what do they do? 2 feet. beards a cozy home for germs and bacteria. and why some children, steve are soft, of course. well, welcome to the brand new edition of in good shape. yes, a new disease bringing more and more children to the dentist's world wide. it's

called chalky teeth, with brown, creamy brown patches and white spots on the teeth. it can even make the teeth crumble away. every 7th child worldwide is affected, and the dentist a puzzling why? victoria and patricio brushed their teeth after every meal. then their mother makes them do it again. despite good dental hygiene. the 8 year old's 1st permanent muller's were brown and cavity ridden. their baby teeth were perfectly healthy, but the new ones looked like this was only 6 when it became painful for her to chew. does how does it hurt when i ate fleas? my teeth came out later and eating candy hurt me too. i guess i,

didn't like it when they were so brown at d.c., i think talking about suffer from a condition called chalky teeth. dentists refer to it as my age or molar, incisor, hypo mineralization. the surface of chunky teeth is rough and discolored. their painful to touch because the enamel is only 110th as thick as it is on a healthy teeth. he suffers today. patricio ok, then you can lie down here. how are your teeth? good to protect the poorest enamel on our teeth. patrice's muller's are sealed with silver caps to me because i can you drink hot and cold drinks without it hurting you? yes, i scream. yes. and you so much when i do this, that ok to yes, this is a case, it's actually a bigger problem than tooth decay. we have more children with m.i.a.

each than children with tooth decay. their parents can't do anything about it. so it's important that we let the parents know that because they often feel guilty and think their children haven't brushed their teeth well enough, or that their kids diets are unhealthy. and my age of vax, adult teeth, they form in the jaw during the period between a child's birth and their 3rd birthday. that's when calcium and phosphate build up on the teeth, which hardens their enamel, making them suitable for daily life. but am i h. disrupts this process? d.n.a. hamel remains tender, and some teeth are already completely destroyed when they arrived. i know about the claim is a professor of pediatric dentist tree, whose researching the causes of chalky teeth all over the world. he's bringing attention to the spread of m.i.a. h. b. m. you could say it's

a problem in all industrialized countries. europe is doing better, especially the scandinavian countries. that's not so surprising since the condition was 1st identified in sweden in 1974. researchers remain unsure about the exact causes of chalky but they think it could involve the chemical by spino, a high doses of antibiotics, respiratory diseases, and vitamin d. deficiency may arise due to the interaction of these and other substances. we have contact with some of them on a daily basis by spin all day, isn't plastic containers and tin cans. it can be transferred to food and then enter our bodies. chalky teeth remain porous and are especially susceptible to tooth decay. the only thing that can be done is to clean them very carefully.

that includes brushing with children's toothpaste with fluoride and using florida salt in the kitchen. children 6 and up should use a mouthwash or a jelly with a high floor and content. and glad to see that things are in good shape, again in 3 months and keep on brushing your teeth so well at home. with good dental care, even chalky teeth can last a lifetime. so what can you do if your kids have chalky teeth? all tips here on in good shape. and i sent medical peter out to dr. alex who knows everything about kids. hello. this is me. this is my camera. these are my corporate groups, and this is dr. alex our global l.o.l. . let's talk about toby keith. is there any new was baltimore? of course this was our father was not a big main effect or risk that course of that. but there are many different risk

factors, for example, something that a curious premium to carry, not to post that. so, for example, if you have like on and off such a deficiency during the birth, or if you have dioxin in breast milk or when the kids have infectious diseases, until the age of 3 years off take it antibiotics, they have also a queue up to get chocolate tea, or if you have to mean the fish. and while the dentist can help to get a read off the hypersensitivity. so he can give their kids like some through rides or cards, and phosphates, or other minor rugs that tops to use the sensitivity. and if the teeth like getting broken, we can put like a filling on it,

crawling on to friend was torture material. it's to keep the truth and also and recover it to, to survive or to us is also hyper sensitivity. another important topic is scary. what's the difference between talkative and to stick it while talking teeth that usually only occur in specific t.v. like the motorist and from scissors. that's why it's also hard to moan or concise a hypo, but on the station because less hypo, but i like sized. that means like the animal has just a bed structure because of different risk factors. and the carriers are curious because of an infectious disease. so we needs the truth and we need bacteria from specific microorganism. and we need also substances like carbohydrates, sugars, and you also need time. and when this all comes together, that there was

a team with our isolation process on the truth. and that cost us a cavity that carries who wired to, especially through the room, has a lot of carrots. while it's often the reason that kids don't like to brush their teeth or let them get crushed from their parents. and so it's like a deficiency of the mouth. and all the primary teeth they are standing in the road are area quite tight together. so there is where we often happening into a dental cover t. . i can show you on this model. so if this, then they really types and you don't take floss. cleaning in between, they can have a team on the side going to be protective against it. well, 1st of all, they show it to brush their teeth at least twice a day, and the parents would also help them. and they should use a toothpaste or fluoride for their remit. already stationed off the t.p.

. and they parents would take care of the 40 of the kids that's not included. so many showers. and then the kids should also come to record every check up to the dentist, especially if it's recommended that to kids come when the 1st tooth is already there. so that means in the age of 6 or 8 months, what is so important? i would say baby teeth through forward and so were done through our dream is not so important on tour. you go to or better to teeth cleaning, baby teeth, that's important for dental help and also for funny tick and acidic reasons. and the baby teeth have all the very important space holder function. so that means parts of a song on the smaller and the baby teeth, they are the prominent teeth. and when the baby tooth gets sick or infection,

kerry has this can have a pet influence under prominent teeth under it. and also when we have to extract one of those deep, quite early and we have to make sure that the gap is, stays open because if not, then to new tooth cannot hop into the gap. and then there is not enough room for the new t.v. . ok, i learned a lot about it when steve. thank you for this interesting talk. and this product on the w. tuesday cake has been around for stone ages. skull findings have shown that even i was stone age and sisters had cavities. but not that frequently. like today, with around 2 and a half 1000000000 people affected worldwide. tooth decay is the most frequent in such as disease worldwide. and what's to blame, sugar. so how can you prevent russia seeds regularly and stay away from sure. good

foods and soft drinks and see a dentist because he can help you with the sealant. when son to her and her son, paul are irish and about years they rarely have sweet snacks. and pole knows exactly why cavities, i've never had them. but cavities are tooth decay. it's like drilling holes in your teeth. and you can eat sweets, but not too many. as you always have to brush your teeth properly. in love with color ready has several adult. the surfaces of his new molar is in their rear have fine grooves, call them phishers. they're hard to clean. you can't always clean these issues properly because you don't know exactly how deep they are. even if you brush them thoroughly or for

a long time. the bacteria can build in the fissures causing tooth decay. children often get cavities in their molar which appear between the ages of 6 and 121 way to guard against this is to have their teeth sealed up or left. the other teeth haven't come in far enough, that will take another 3 or 4 months. if you, the dentist fills the fissures with a synthetic feelin's to prevent tooth decay. the procedure takes about 10 to 15 minutes and is painless. dentists recommended for children who have a heightened risk of cover the children have already had cavities in their baby. it makes sense to seal their adult teeth. the bacteria living in the mouth can also attack other teeth. hasn't had any cavities in this baby teeth, but with him,

the adult teeth that are now erupting have very, very deep fissures. and that's why it's a very good idea to apply sealant as a preventative measure. dental, have proven effective against tooth decay. a plastic feel about 5 to 10 years. it's no substitute for good dental hygiene. it doesn't provide complete protection against cavities because other teeth can also become infected. but it certainly provides additional protection. it's also important for the sealant to be examined regularly because if there are signs of sealant loss to be reapplied, otherwise, cavities can develop very quickly underneath the sealant. if the sealant becomes detached over the years, the risk of too thick

a you may increase. first the surface of paul's tooth is cleaned and then come fleetly dry. that's important for the seal and density and longevity. gel is applied to roughen up the surface of the anomaly. next, the liquid sealant is applied to the fissures. it that hardens when exposed to ultraviolet light. allergies to the sealant are very rare. the last step is to apply fluoride. he'll come back in for months to have the other teeth sealed. so how is paul now? i'm totally fine. almost weighs one hour before eating again. but still dental hygiene is important as ever. that means don't eat too many sweets and drink water instead of soda, pop. all proper brushing and flossing,

as well as regular dental checkups. this way pulls teeth, should stay healthy in the future. the world is fighting the novel coronavirus. so i say, please stay safe. and patrick says, please shave and the man knows what he's talking about because he's the head of the french association of emergency doctors. and he says that the beard can be a health risk. the protective effect, so face masks, and the beard or moustache as self, can be the host of a lot of germs. but is this really true? beards come and go according to fashion, in some places. in others, tradition plays a role in laying on guy, you know, from your own birth has had one for 5 years,

but how hygenic insists style statement. i think beards are high. jim. i think that all the rumors about germs and bacteria and beards are just prejudice. i don't know for sure, but i'd say my beard is very clean. is that really true? when men with beards touch their faces, they can spread bacteria from their hands onto their facial hair. there have even been reports of fecal bacteria, in beards. we want to find out if there is any truth in those reports and we accompanied me on to the micro biological institute of the university hospital. and professor spence has agreed to do some analysis for us. in principle, we say that beard hair is longer and this hair covers up areas of skins that might make it harder to clean those areas under the hair. and of course, in

a purely mechanical sense, some particles, traces of food can get in tangled in a beard. it's not unusual to find bank tyria on our faces. thousands of microorganisms live on every single square centimeter of skin. most of them are harmless. some, however, for example, certain can cause illness to tell. many germs contains professor cheek into petri dishes. the plan is to grow the bacterial cultures laboratory conditions and then examine them. should there be bacteria, for example, or germs you might find in a wound which could under certain circumstances, pose a danger. i'm curious to see what comes up. we are to the results in

a week. in the meantime, we go with the once a month. he lets his barber and nuremberg his beard to ensure it stays clean, healthy and luxuriant. what does have think about the danger of bacteria and beards? because keeping a beard clean is easy enough as long as you soap up your beard. well, when you wash your face and you reach the skin below, the skin usually presents the biggest problem, not the facial hair itself. and if you wash your hands well after visiting the restroom before you touch your beard again, then there shouldn't be any problem. after lathering up his

client, the barber used to make lay on skin and beard softer, and he opens the corners of the skin and dead skin particles are sloughed away and then he starts to trim the beard. leon does try to keep his beard in good shape at home, but he prefers going to the barber. it's much more relaxing a week later, the swab samples are ready for analysis. 1 we're curious to see whether spend coppermine does actually detect anything suspicious. the bacterial growth in this stage is visible to the naked eye. the researcher now wants to identify the bacteria more closely with the mass spectrometer. does leyland's beard contain dangerous germs? we've gotten some we were able to identify stuff in a caucus epidermis, which is

a part of the normal skin flora and it belongs there. it's good that it's there. the other bacterium here stop a local course already has isn't usually part of normal skin flora. but as we've taken it from the region of the upper lip, and it's normally present on the mucous membranes of the oral cavity, then it's no surprise that it might be found on the facial hair on the upper lip. so there's nothing to worry about. it all kind of, it was all leon and his beard at the all clear there was a little silver. yes, i'm definitely relieved. you do wonder what might be detected. and i'm glad to know that the analysis has only turned up normal bacteria. and normal germs from good works are a little tense when shown that the bacteria found in period started generally completely harmless. and men have roughly the same number of germs on their face.

whether they have periods or not. elton john david bowie. and john lennon was them just like the cowboys in the wild, wild west. and the writers and the diva persia. i'm talking about how heels, so high heels are not for women only. but it wasn't until the 18th century that men started to wear no heels, and they did a great job for the health. because all feet, whether male or female, don't like high heels. 24 year old tyler sutton loves shopping, and she loves high heels. this talk or show us from jennifer. i like wearing heels especially when i go out. there are certain occasions when you feel better wearing heels. you instantly feel more confident. but as many women know from painful experience a day spent in kielce can take its toll. tyra wants to know if heels are actually

bad for the feet. dr. nicholas gruen pat is an orthopedist. first, he has his patients walk on a treadmill that measures how much pressure is being placed on the feet. particularly intense pressure shows up red dust problems hold up. so the basic problem with high heels is that they place more pressure on the 4 foot because for the pressure there is up to 5 times greater than normal. the clean energy and even weight distribution with high heels triggers pain much faster than with flat shoes on a flight. and in the long term, they can cause damage to the feet in the form of halleck's vulgus, also known as a bunny and or claw toes. in a worst case scenario, the meditational bone can actually break the fish tyra's feet look normal. so far, there's no sign that her heels are causing any damage. but if she notices any signs

of strain such as swelling recurrent pain or discoloration of the skin, she should go to the doctor straight away. tara would also like to know if different types of shoes can cause different problems. she's brought along a selection to show the doctor. yes, this will put a lot of pressure on the forefoot. as much as 90 percent of your body weight will be leaning on the front 3rd of the foot. so of course, it will give you some trouble with the damaging affects of high feels very according to the height and width of the heel cords, orthopedists like this sort of heel better. 3 or 4 centimeters high at the very most and relatively wide. and of course, the shoes are much more comfortable if you doing more walking and standing around. wearing inlays can also help distribute the pressure on the feet and make high heels more comfortable. inlay, for example,

reduces the pressure on the feet. the toes are often crushed together so that in lay spaces them out to seem like the toes are being pushed outward and it hurts a bit in other places because there's no room but something else might help in place. can't correct deformed feet, but can bring relief and isn't really therapeutic. it's more about comfort and reducing pain. it means issue can be worn for longer, without discomfort. basically the hunger, the heel, the more the wearer should make sure she sits down. and anyone determined to keep wearing heels despite the risks, can take a few precautions to limit the damage. for example, regular moisturising. this can help prevent calluses. boosting circulation,

foot massages also helps relieve tension, massaging the area that sore can ease the problem, and a foot roller can also health improves circulation. it's good to remove calluses, the take and skin can be unsightly and painful. to do foot exercises while you're cleaning your teeth, for example, it won't fix the deformity, but it can help strengthen the foot muscles and improve flexibility. have a footpath softer, supple skin can withstand pressure better lip. balm can also help keep the toenails short, but also reduces shoe pressure. ultimately, it's also a good idea not to wear heels for long periods. carry a change of shoes with you or alternate heels with flats, so you give your feet time to recover and don't develop calf shortening. and ideally, go barefoot when you can so

i made the right and the healthy fashion choice. see you again next week, and then let's all try to stay in good shape.

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a virus spread. why do we panic? and when we'll all miss him. just 3 of the topics covered and the weekly radio show is called spectrum. if you would like and the information on the coronavirus or any other science topic, you should really check out our podcast so you can get it wherever you go. your podcast. you can also find us at dot com slash science. the fight against the coronavirus pandemic has the rate of infection been developing measures are being taken. what does the latest research say? information into context. the coronavirus and the coded special monday to friday on w.

as the day that we newsline from berlin, the coronavirus pandemic dominates the g 20 summit and a virtual meeting hosted by saudi arabia. world leaders focus their efforts on fighting cope with 19 and its economic consequences. countries are reportedly drawing up plans to fund a fair distribution of coronavirus vaccines around the globe. also coming up.