dr. john torres explains. >> what kind of other berries do we find? >> reporter: a day like today used to feel impossible. >> i have pretty bad anxiety and depression too. i just wanted to stay inside and not do much and it wasn't working. it was getting worse and worse. >> reporter: her 9-year-old son was dealing with similar issues. the family physician wrote them a prescription. not for drugs or pills but a big dose of mother nature. five times a week spend 30 minutes at this park. >> i consider it more important than any medication i can prescribe. >> reporter: it's a growing field of medicine called eco therapy. park rx america, a national initiative that includes more than 50 doctors in 11 states. >> why not just go to a gym? what's the evidence of going outside? >> scientists have looked at this and what we found out is that moving out doors is actually better, more therapeutictherapeutic. >> reporter: it can help with depression, attention deficit disorder and chronic diseases like diabetes and high blood pressure. looking around at trees and

dr. john torres for that report. >>> the first world map to name america is going up for auction.house says it has discovered a previously unknown copy of a map being called america's birth certificate because it's, quote, the earliest piece of writing that uses the word "america". the map will be auctioned in london december 13th, estimated to fetch between $788,000 and $1.2 million. sending people everywhere scrambling in their attics for old maps. >> that's pretty cool. that map, the original? i like it. >>> nutella fans, are you one? >> are you get getting? >> i don't night go nut others this change. it has to do with european nutella. it's been trending since a german consumer group noticed a tweak to the ingredients. the hamburg protection center found it contain powdered skim milk and sugar. they confirmed the changes but said customers shouldn't notice a difference to the taste and the quality. now there is still no word if this change will be coming to the nutella sold here in the united states. right now only in europe where they changed those ingredient. >> i feel like

dr. john torres. >> reporter: new evidence, amount you drink matters.ate drinking is one per day for women, two for men. heavy drinking is three for women and four for men. no matter what the favorite beverage, risk increases. for colon cancer, moderate drinker increases risk by 17% and heavy climbs to 44%. breast cancer, light drinker bumps up risk by 4% and heavy drinker -- head and neck cancer, heavy drinker staggering increased risk of 500%. what is healthiest amount to consume? none. for cancer prevention, it's best not to drink. heart healthy benefits of red wine? jury is still out. >> if you don't drink, there's no reason to start. if you do drink, no reason to increase. and if you want to cut back, that's always better. >> across the board apply to everyone? >> family history plays a big role in this. if you have a family history or increased risk yourself, you have to be more careful with alcohol. for all of us, moderation is the key. >> surprising what is considered moderate versus light. >>> hidden secret discovered in masterpiece by one of t

dr. john torres explains this new remedy. check it out. >> blueberries?ies do we find on this trail? >> reporter: for lauren huddle and her family, a day like today used to feel impossible. >> i have pretty bad anxiety and depression, too. i just wanted to stay inside and not do much, and it wasn't working. it was getting worse and worse. >> reporter: lauren's 9-year-old son was dealing with similar issues, so the huddles' family physician wrote them a prescription, not for pills or drugs, but for a big dose of mother nature. five times a week, spend 30 minutes at this park near their home. >> i consider it more important than any medication i can prescribe. >> reporter: it's a grong ecotherapy. pediatrician dr. robert zarr started park rx america, a national initiative which now includes more than 50 doctors in 11 states. why not just go to a gym? what's the evidence behind going outside? >> scientists have actually looked at this. and what we found out is that moving outdoors is actually better, more therapeutic value for your health than moving indoors

dr. john torres from nbc news, thanks.u said, you'll have more coming up on nightly news right after news4 at 6:00. >> the name alex azar has been trending on social media this afternoon. the former pharmaceutical representative is president trump's pick to be the next secretary. the president made the announcement via twitter this morning, calling azar a star for better health care and lower drug prices. azar is a unique pig because he comes from the industry that is heavily regulated by hhs. he is a lawyer by training who spent the last ten years with drug giant eli lili. he left the company back in january to start his own consulting firm. he is seen as an expert on health care regulation. >> surveillance video captures people running for their lives as the powerful earthquake hit iran near the iraqi border sunday. more than 400 people are known dead, thousands more injured. part of the area hit was remote where homes made of mud brick easily collapsed onto people living there. but the 7.3 magnitude quake was also power

dr. john torres has the details in tonight's "keeping you healthy" report. >> we saw the need to update these guidelines to reflect the real threats of high blood pressure. >> reporter: the significant change from the american heart association now means more than 100 million americans have high blood pressure. the new guidelines now define high blood pressure as anything above 130 over 80, and recommend intervening earlier to control what doctors call the silent killer. the impact is especially important for people under 45. the new definition will triple the diagnosis among men and double it among women in that age group. >> getting your blood pressure even lower than what we previously thought reduced your risk of heart attack, reduced your risk of stroke, and reduced your risk of dying. >> reporter: some patients may need to start taking medication. but reducing your risk naturally is always the first line of defense. exercise and lose weight. quit smoking. and reduce stress. today's news is the extra push 58-year-old jeff evans needs to lower his blood pressure. >> my goal is to get off