dr. nancy snyderman shares a very personal story for all families. >> plus, a new warning for pregnant women about that tainted water. "nightly news" begins now. >>> good evening. while they blew up suddenly and out of nowhere, they were not unexpected. southern california has been under a red flag warning, meaning hot and dry and windy and favorable wildfire conditions. and tonight they're in the middle of an all-out fight there. the picture from space shows the smoke plume where the winds blow to the west, down the dry hill sides, away from the land, out over the water. 3700 homes are under evacuation warnings, and over 1700 acres have burned, including several homes. a several hundred firefighters are on the job tonight. it is where we begin tonight, nbc's miguel almaguer is in glendora, california, where three arrests have been made in connection with this fire. miguel, good evening. >> reporter: brian, good good evening. police say they took three men into custody after they started an illegal campfire. five people have been injured, at least five homes have been destroyed. you may be a

dr. nancy snyderman, thanks as always. >>> now let's turn to news from overseas tonight. after two terrorist attacks and dozens killed in russia this week, president vladimir putin made a very public visit to sochi today. less than five weeks to go now until the start of the winter olympic games in that city. putin as you may know has made a vow to destroy the terrorist forces to keep the games safe. and he has made this the biggest security operation in sports history. we get our report tonight from nbc's jim maceda in sochi. >> reporter: russian president vladimir putin making sure every olympic venue is ready for its closeup. he even tries out the slopes today looking relaxed and controlled. a contrast to wednesday, just 400 miles away in volgograd where a solemn putin honored those killed in the bombing. even as putin toured sochi today, a bomb threat led to the evacuation of a mall. a false alarm, but another sign of nerves on edge. since islamist militants declared war on the olympics, so putin invested billions to keep things safe. it's called ring of steel for a r

dr. nancy snyderman has more on the need that's driving the program and the doctors behind it. >> reporter: the legrand family is going to the doctor, but they don't have far to walk, just to the big blue bus. >> she's been healthy, daddy? >> yeah. >> reporter: 2-year-old yarianna and baby sister scarlet get free checkups on the health clinic on wheels. >> can you take a deep breath for me. >> reporter: that brings dr. alan shapiro to new york's homeless and uninsured kids. he first rolled into this neighborhood 25 years ago, one of the country's poorest. >> it's hard for people to remember what the south bronx looked like, but to say a war zone is not an exaggeration. >> not at all. there were empty lots. everywhere. >> reporter: while the bronx has improved over the years, it still remains a tough place to grow up. one out of two kids lives below the poverty line. >> i would have never thought in my wildest dreams i would end up being homeless and ending up in a shelter with my kids. >> reporter: as many as 22,000 kids sleep in shelters on any given night. >> okay, watch yourself. >> rep

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dr. nancy snyderman reporting. the flu virus is most easily spread by talking, sneezing, or talking. the virginia health department says there's a few things you can do to decrease your chances of getting the flu this year. washing your hands help and then be careful touching things and touching your mouth, eyes, or nose. >> this time of year everyone has something. >> knock on wood our family hasn't gotten anything yet. >> one of the best ways to keep it from spreading around the family. what's the number one thing everyone touches? the remote. >> that's the dirtiest thing when you go to the hotel. always bring the lysol. >> good to know. >> or don't watch tv. >> put it on channel 4 and put the remote away until springtime. that's the best thing you can do everybody. welcome to your weekend. a very cold first weekend of the new year and there's more cold coming, everybody. next week may be some of the coldest weather we have literally seen in almost 20 years. washington national airport has not been below zero since 1994. that's 20 years ago and i don't know that we're going to get

dr. nancy snyderman. >>> a big change istore for one of the most popular breakfast cereals in our country. and why many consumers demanded this one. >>> and "making a difference." we return to the boxing gym where making the grade is as important as making champions. "nightly news" begins now. >>> good evening. a good many of our viewers

dr. nancy snyderman is here with more on this. >> reporter: hey, brian, the fda was very pointed on taking action on this today, because it has to do with the fact that many people don't know it is a common component in spripgz prescription pain killers like vicodin. patients may not realize they are at risk for liver damage, and that is why the agency is asking doctors to stop prescribing medication -- combination medications with more than 325 milligrams of acetaminophen per dose. it all breaks down to why this is so important, it targets the prescription pain killers and is a reminder to keep the dosage down to common levels, that is don't exceed more than 4,000 milligrams in a 24 hour period, usually about eight or ten pills. ask your doctor what is the content in any prescription pill, and acetaminophen, and remember, alcohol is not your friend when it comes to acetaminophen and don't drink when you take the medication. and for most pain that isn't severe, when you just need an over-the-counter medication, one pill can sometimes take care of routine pain and there is no evidence, inte

dr. nancy snyderman shares a very personal story for all families. >> plus, a new warning for pregnant women about that tainted water. "nightly news" begins now.

dr. nancy snyderman. we have never had lunch. >> you're having lunch today with dr. nancy? >> yes. you want to come? >> yes. >> be happy for your friends. what's wrong with you? >> when they're like i got engaged. i got a new job and you're thinking, i didn't get engaged. i have the same crumby job. >> i'm wearing the same dress i was a year ago. i didn't even notice until you said it, frankly. >> i noticed. i do wear the same things over and over again. >> be joyous with your friends and cry with them, too, when they're crying. >> if someone has hurt you, for some reason, give them a chance to make up for it. if they want to apologize, let them do it. i think sometimes you hold such a grudge and it gets bigger in your head as the weeks and months go along. talk to them, get it over with. >> if they don't want you to forgive them, forgive them anyway. you'll feel better. by not forgiving them, you're hurting yourself. >> and if they're really nasty, write them off. >> gone. >> give other women compliments. >> you look awesome in that dress. >> that same green dress. >> you know wha

dr. nancy snyderman. nancy, good morning. we're talking about it being this cold. exposed flesh in a matter of minutes can result in frostbite. >> within a few minutes, you'll start to see skin changes. al said within 7 to 10 minutes, you can get frost bite. you think it's going to happen to somebody else. first, dress appropriately. the elderly and children are most at risk because they don't thermoregulate as well. dress in layers. that traps in warm air and heat. >> loose layers. >> not tight things that will constrict blood vessels. expose all the areas in your body, fingers, i'm a big believer in mittens, get the warmers, and men, put something on your head. little kids, too, cover your head. >> and hypothermia, real concern with the wind chills in the midwest and the northeast. >> this isn't just getting cold. this is when your core body temperature drops. if your normal temperature is 98.6, we're talking about temperatures dropping to 95, 96 degrees. and that's when you start to see organs slow down. people can have slurred speech, be confused, almost intoxi