dearJulius.com

Why don’t we grow to be 10 feet tall?

© Deposit Photos a girl getting her height measured

By Molly Glick, Popular Science

We all know the families populated by towering basketball players versus the petite households with builds best suited for, say, horse jockeying or wrestling. There’s probably a fair amount of height variation within friend groups, too: The tallest friend takes the selfies, while the shortest struggles to fit in the frame. But despite these drastic variations, humans pretty much fall within a normal height range: In the United States, healthy men are, on average, 5 feet and 9 inches tall while women are typically 5 feet and 4 inches.

Thanks to middle school science class, we know that we inherit height from our parents. Why, though, do most people stay within these standard limits? Why don’t we all grow to be 10 feet tall?


Why we will likely never reach extreme heights

We can thank evolution for this, says Terence D. Capellini, a human evolutionary biologist at Harvard University. “Height is not just about height,” Capellini says. “It’s about the overall biological growth of an organism, at least in humans.” Researchers surmise that how tall we become isn’t an isolated piece of our extremely intricate genome. Rather, it’s intertwined with other growth processes, like organ development. Over millions of years, natural selection has forged the blueprint for the human genome and therefore influenced body and organ growth through linked genes and subsequent tissue growth. Our height, then, is simply a byproduct.

Besides genetics, environmental factors like proper nutrition and modern health care can impact height. Still, genes take on the lion’s share of the work, accounting for 70 to 80 percent of the result. Height generally evens out around puberty, and that’s when those evolutionary mechanisms step in. When we reach our predetermined heights, a biological mechanism called programmed senescence eventually turns off the genes responsible for growth. Most people grow taller until puberty ends, their bones continuously lengthening. This process occurs at the growth plates, two layers of cartilage located in children’s vertebrae and long bones, such as the femur and tibia.

We grow quickest as fetuses, says Jeffrey Baron, a pediatrician and head of Growth and Development research at the National Institutes of Health. The added centimeters generally decrease afterward. In fact, fetuses grow about 20 times faster than 5-year-olds. Infants’ growth plates are also highly active, causing them to grow rapidly. As a child gets older, growth plate activity slows down. Eventually, in mid- to late adolescence, the growth plate activity ceases and teenagers reach their adult height.

Compare the growth process to a wind-up toy train, Baron says. Winding up the train’s spring causes the coil to tighten with potential energy. Upon release, the train zooms forward but gradually slows and putters out as the spring winds down. When we use up our genetically programmed growth potential, like the unwinding spring in the toy train, our growth slackens and eventually stops.


What scientists know—and don’t know—about height inheritance

Hundreds of genes likely influence height. In fact, a study out in 2018 found over 500 height-related genes. These genes manipulate the behavior of growth plates and control bone length.

“For most of us, it’s not just one gene that makes us short or tall,” Baron says. “It’s many, many different genes.”

Though rare, mutations in height-related genes can trigger unusually tall stature. “The Princess Bride” actor André the Giant had pituitary gigantism, a condition in which the pituitary gland produces too much growth hormone, which controls height. There are other conditions that affect height, too, such as skeletal dysplasias, which result in shortened and often malformed bones.

The conditions that result from excess growth hormones also carry serious health risks, according to a February 2019 Endocrine Society study. These include heart failure, bone disease, and an overall “impaired quality of life.”

By recording thousands of people’s heights in genome-wide association studies, which look for genetic variations that occur more frequently in groups of people who all share the same physical traits, researchers aim to better understand the links between height inheritance and disease susceptibility.

Clarifying the mysterious relationships between genomes could transform how we treat diseases. For example, genetic variants causing short stature may also make it more likely for someone to develop coronary artery disease, according to a 2015 NEJM study. And, if we are able to pin down certain genetic variations more precisely, then in the future, genome editing techniques like CRISPR, which can correct faulty genes, may facilitate new growth disorder therapies.

If you’re still hoping that humans someday reach greater heights, keep a close eye on the Nordic region. Last year, researchers concluded that populations in Denmark, Finland, Norway, and Sweden have grown progressively taller each generation.

COMMENTS




Made with in NYC
Name

4th of July,7,Abu Dhabi,2,Accessories,234,Acne,13,Adventure,32,Adventure Travel,638,Advice,295,Africa,26,African Food,2,AIDS,1,Air Travel,150,Alabama,5,Alaska,20,Alberta,1,Alcohol,4,All About Beer,1,All About Wine,2,Alternative Treatments,4,America,77,American Food,5,Amsterdam,2,Android,11,Anguilla,3,Animal,367,Animal Health,1,Animals,103,Anniversary,1,Anniversary Cake,11,Antarctica,7,Anti-aging,49,Antigua,3,Appetizers & Snacks,2,Apple,11,Apps,16,Argentina,15,Arizona,19,Arkansas,2,Armenia,1,Asia Travel,47,Asian Food,7,Asthma,4,Athens,3,Austin,8,Australia,92,Australian Food,1,Austria,13,Autism,1,Auto Insurance,1,Auto Show,52,Autos,357,Azerbaijan,1,Baby Shower Cake,29,Back Pain,25,Bags,10,Bahamas,13,Balance Work & Life,50,Banana Cakes,2,Bangladesh,8,Barn Finds,1,Bathroom,43,Be a Better Manager,33,Beach Travel,58,Beaded Dress,2,Beards and Shaving,29,Beauty,1888,Beauty & Style,35,Beef Recipes,7,Belarus,1,Belgium,9,Belize,15,Bermuda,5,Best Products,17,Better Partner,40,Beverages,3,Bhutan,9,Bills to Pay,35,Birds,4,Birth Control,1,Birthday Cake,109,Blue Lagoon,2,Blueberry Cake,11,Bolivia,3,Books,1,Botswana,3,Brazil,38,Bread,11,Breads,1,Break Room,12,Breakfast & Brunch,6,Breakup,19,Breakups,3,breast,1,Breasts,69,Broken Hearts,5,Brownie,8,Brunei,1,Budget Travel,97,Bundt Cake,30,Business Skills,102,Butter Cake,52,Buying,1,By Region,3,Cake Decorating,113,Cakes,54,California,109,Cambodia,4,Camera,6,Canada,80,Cancer,73,Car Shows,1,Car Tech,2,Caramel Cake,5,Career,189,Career Advice,298,Career Choice,125,Career Growth,180,Career Paths,24,Career Problem,8,Caribbean,45,Caribbean & Mexico,5,Carrot Cake,22,Cats,49,Celebrity,17,Celebrity Dress,2,Celebs,1,Ceremonial Cake,9,Certified Pre-Owned Vehicles,1,Cheese Recipes,4,Cheesecakes,251,Chicago,7,Chicago Auto Show,2,Chicken Recipes,14,Chiffon Cake,5,Children's Health,21,Chile,7,China,21,Chocolate Cake,395,Christmas,35,Christmas Cake,23,Christmas Travel,14,Classic Cars,39,Cleaning Tips,144,Clinical Practice,1,Clothes,1,Cocktail Recipes,2,Coconut Cake,21,Coffee,1,Coffee Cake,15,Coliseum,1,Colombia,18,Colorado,32,Columbia,3,Communication,2,Companies,2,Compassion,2,Computing,16,Connecticut,4,Consumer Electronics Show,5,Cookies,10,Cooking,8,Corporate Travel,2,Costa Rica,13,Country Travel,249,Creative,309,Creative Idea,22,Creative Ideas,37,Croatia,15,Cruiser Travel,16,Cuba,18,Cultural Travel,66,Cupcake,322,Customs & Classics,2,Czech Republic,6,D.C.,2,Dandruff,1,Dating,18,Dating Advice,73,Dating Advice for Women,22,Dating Tips,13,Decor,23,Decorating Ideas,181,Delaware,1,Demotivational,636,Denmark,12,Dental Health,26,Dentistry,1,Depression,24,Desert Travel,1,Desserts,3,Detroit Auto Show,4,Diabetes,25,Diet,131,Dining Out,3,Dinner,14,Disease,116,Divorce,16,DIY,112,DIY Fashion,34,Dogs,156,Doughnuts,5,Dress,29,Drink,27,Drinks,1,Drinks & Cocktails,4,Driving,3,Drugs,3,Dubai,15,Ears,2,East Africa,4,Easter,1,Easter Island,1,Easter Travel,1,Eco Travel,18,Ecuador,7,Education,87,Eggs,3,Egypt,4,Electronics,4,Electronics and Gadgets,2,Emirates,1,England,13,Entertainment,148,Enthusiasts,131,Entrepreneurship,40,Estonia,2,Eswatini,1,Ethiopia,2,Europe,110,European Food,8,Exercises,51,Eye,300,Eye Health,28,Eyebrow,56,Eyelash,20,Face,54,Facts,284,Fall Travel,43,Family,16,Family Travel,128,Faroe Island,1,Fashion,395,Fashion for Kids,2,Fashion for Man,12,Fashion for Woman,31,Fat Loss,91,Father's Day Cake,4,Father's Day Travel,1,Featured,218,Features,1913,Fertility,2,Festival Travel,25,Fiji,6,Finance,22,Finland,16,Fish & Seafood,13,Fitness,1177,Fitness & Exercise,219,Florida,69,Food,183,Food and Drink,14,Food Recipes,7,France,37,Frankfurt Motor Show,2,Free Travel,3,French,6,French Polynesia,5,Friendship,40,Fruit & Veggie Recipes,8,Fruitcake,70,Fruits,4,Fuel Economy,1,Fun,42,Funny,546,Gadgets,31,Galapagos,3,Games,12,Garden,24,Gardening,277,Gearheads,1,General,7,Geneva Motor Show,3,Georgia,14,Germany,18,Get Healthy,63,Ghana,2,Girlfriend Grooming,10,Google,15,Graduation Cake,2,Gratitude,11,Greece,37,Green Living,5,Greenland,1,Grooming,89,Guatemala,2,Hair,1264,Hair Care,317,Hair Color,299,Hairstyle,65,Hairstyles,855,Halloween,41,Halloween Cake,12,Halloween Travel,9,Happiness,19,Hawaii,53,Hayden Panettiere,1,Headache,22,Health,854,Health & Fitness,300,Health Care,491,Health Insurance,1,Healthcare Tech,6,Healthy,12,Healthy Drinks,31,Healthy Eating,186,Healthy Habits,159,Healthy Living,345,Hearing,1,Hiking Travel,63,HIV/AIDS,4,Holiday Travel,28,Holland,1,home,31,Home & Garden,205,Home and Decor,483,Honeymoon Travel,128,Hong Kong,13,Horoscope,31,Hot Rod Power Tour,1,Hotels,71,Housekeeper,8,Hungary,3,Ice cream Cake,21,Iceland,41,Idaho,4,Ideas,11,Illinois,13,Imports,1,Impress a Girl,20,Impress Women,4,Independence Day Travel,1,India,36,Indiana,5,Indonesia,13,Indoor Gardening,69,Industry,5,Inspiration,58,Insurance,5,Internet,19,Internship,8,Interview Skills,37,Investing,12,iPad,2,iPhone,6,Iraq,1,Ireland,36,Island,60,islands,2,Israel,9,Italy,56,Jamaica,8,Japan,44,Jealousy,2,Jewelry,13,Job Search,47,Jordan,6,Just For Fun,2,Kansas,6,Kentucky,2,Kenya,2,Kids,1,Kids & Pets,10,Kitchen,67,Koala,1,Korea,2,Kyrgyzstan,1,Lamb,2,Laptops,4,Latin America,3,Latin American Food,1,Latvia,1,Laundry,6,Layer Cake,95,Leadership,44,Legs,1,Lemon Cake,18,Life,1,Life Hacks,273,Lifestyle,908,Lips,134,Lithuania,2,London,24,Long Distance Relationship,24,Los Angeles Auto Show,14,Louisiana,9,Love,165,Lowa,4,Lunch,5,Luxembourg,1,Luxury Travel,35,Maine,6,Maintenance,3,Makeup,608,Makeup & Beauty,11,Makeup Tips,77,Malaysia,1,Maldives,15,Malta,2,Mango Cake,3,Manicure,10,Marketing,10,Markets,11,Marriage,97,Marshmallow,3,Maryland,6,Massachusetts,9,Massage,5,Mauritius,6,Meditation,35,Men & Women,18,Men's,2,Men's Health,14,Menstruation,21,Mental Health,302,Mexico,74,Miami,13,Michigan,5,Microsoft,6,Middle Eastern Food,2,Mind,3,Mississippi,2,Missouri,7,Mobile,22,Moldova,1,Monaco,1,Money & Career,21,Monkey,1,Montana,12,Morocco,20,Mother's Day Travel,1,Motherhood,16,Motivation,2,Motorcycles,106,Motorsports,2,Mousse,2,Muffins,9,Mug Cake,14,Multiple Sclerosis,1,Muscle Cars,4,Muscle Cars & Hot Rods,3,Muscle Gain,2,Myanmar,9,Nail Art,195,Nails,252,Namibia,4,Nature,4,Nature Travel,102,Nepal,6,Netherlands,11,Nevada,23,Nevis,1,New Bikes,2,New Car Deals,1,New England,5,New Jersey,2,New Mexico,6,New Year Fashion,6,New Year's Day Travel,6,New York,55,New York Auto Show,3,New York City,20,New Zealand,47,Newfoundland,1,Newlyweds,4,News,334,Nicaragua,2,North America,11,North Carolina,6,North Dakota,1,North Ireland,1,Northern Ireland,1,Norway,20,Nutrition,447,Occasional Travel,9,Oceania,1,Offbeat,676,Ohio,6,Oman,5,Online Date Tips,2,Operating Systems,2,Oral,4,Oregon,10,outdoor,3,Outfits,166,Ownership,61,Pain,24,Painting,16,Pakistan,2,Panama,5,Pancake,19,Panda,1,Panna Cotta,3,Paraguay,1,Parenting,370,Paris,23,Paris Motor Show,4,Pasta,2,Pastry,7,Pebble Beach Concours d'Elegance,2,Pedicure,4,Penguin,4,Pennsylvania,10,People & Places,88,Perfumes,14,Personal Finance,164,Peru,21,Pets,195,Phoenix,1,Photo Feature,1,Pie,27,Pimple,3,Plum Cake,1,Poke Cake,10,Poland,3,Popular Ingredients,26,Pork Recipes,7,Portable Media,14,Portugal,21,Pound Cake,55,Prague,1,Pregnancy,112,Premium,1,Printer,2,Protein Bars,1,Psychology,1,Pudding,9,Puerto Rico,7,Pumpkin Cake,45,Qatar,6,Quick & Easy Recipes,11,Real Estate,72,Recalls,4,Recipe,1098,Recipes,52,Recipes & Meal Ideas,3,Recipes By Course,5,Relationship,167,Relationship Advice,180,Relationship Advice for Men,23,Relationship Advice for Women,27,Relationship Problems,58,Relationship Secrets,14,Relationships,139,Research,94,Resort,11,Restaurants & News,13,Resume,11,Retirement,10,Reviews,1,Rhode Island,2,River Travel,2,Road Trips,49,Romania,4,Romantic Getaways,15,Rome,5,Russia,16,Safety,5,Saint Lucia,1,Saint Patrick's Day Travel,1,Salad,6,San Miguel de Allende,1,Science & Tech,66,Scotland,10,Seasonal,56,Seasonal Travel,59,Security,9,Self Help,14,Self-Care,3,SEMA Show,5,Senior Relationship,2,Sex,7,Sexual Health,19,Shanghai Auto Show,7,Shaving,1,Sheet Cake,20,Shirt,4,Shoes,29,Shopping,10,Shots & Shooters,1,Side Dishes,4,Sightseeing Tours,2,Singapore,18,Ski Resorts,10,Skin,429,Skin Caare,1,Skin Care,609,Sleep,62,Slovenia,6,Small Business,163,Smartphone,28,Smile,1,Smoothies & Juices,3,Snacks,1,Social Media,44,Solo Travel,24,Solomon Islands,1,Somoa,1,Soth Africa,1,South Africa,14,South America,3,South Carolina,4,South Dakota,5,South Korea,3,South Pacific,2,Space Travel,14,Spain,33,Special,46,Special Cake,579,Special Feature,113,Special Features,490,Sponge Cake,15,Sports,22,Sports and Exotics,4,Sports Cars,8,Spring Travel,23,Squirrel,1,Sri Lanka,6,Strawberry Cake,22,Street Fashion,8,Stress Relief,35,Stroke,2,Student Travel,1,Style Guide,25,Summer Travel,53,Summer Vacation,8,Supercars,10,Sweden,19,Swiss Alps,1,Switzerland,20,Tahiti,1,Taiwan,3,Tanzania,1,Tarts,12,Tattoos,81,Taxes,7,Teas,2,Tech,89,Tech Advice,12,Tech Education,7,Tech Hacks,19,Tech Updates,2,Technology,17,Teen Advice,4,Teeth,5,Tennessee,6,Texas,57,Thailand,31,Thanksgiving Cake,4,Thanksgiving Travel,5,Therapy,3,Things to Do,165,Tibet,2,Tips,264,Tips & Tricks,6,Tokyo Motor Show,2,Tools & Skills,16,Top Stocks,1,Top Stories,1,Traditional Cake,4,Train Travel,23,Training,1,Transportation,22,Travel,225,Travel Advice,64,Travel Apps,1,Travel Guide,40,Travel Tips,149,Trends,7,Trucks,1,True Health,5,Tunisia,2,Turkey,10,Turkish,1,Tuscany,1,TV,2,UAE,10,UK,40,Ukrine,1,Understanding Women,28,Urban Travel,47,Uruguary,1,USA,629,Utah,12,Uzbekistan,1,Vacation Travel,245,Valentine's Day Cake,7,Valentine's Day Travel,1,Vanilla Cake,17,Vegetables,3,Vehicle Travel,2,Venezuela,1,Vermont,4,Victoria Falls,1,Video,5,Vietnam,5,Virginia,5,Waffles,3,Washington,15,Washington DC,20,Waxing,19,Web & Social,17,Wedding,87,Wedding Cake,549,Wedding Dress,30,Weddings,60,Weddings Travel,4,wei,1,Weight Gain,29,Weight Loss,755,Weird,172,Wellness,193,West Indies,2,Wi-Fi,2,Wildlife Travel,13,Winter Travel,56,Wisconsin,5,Women Lifestyle,23,Women's,121,Women's Health,173,Work Environment,77,Workout,8,Workouts,81,Worldwide,155,Wyoming,2,xxx,1,Yemen,1,Yoga,85,YouTube,3,Zadar,2,Zambia,3,Zimbabwe,4,
ltr
item
Unplugged Magazine: Why don’t we grow to be 10 feet tall?
Why don’t we grow to be 10 feet tall?
https://4.bp.blogspot.com/-rYPCdC4wsDQ/XOKKrFs5FdI/AAAAAAAAiec/bwJeqRst-gsTFj1rPFO9s4l9njEM3crWgCLcBGAs/s1600/Why%2Bdon%25E2%2580%2599t%2Bwe%2Bgrow%2Bto%2Bbe%2B10%2Bfeet%2Btall.jpg
https://4.bp.blogspot.com/-rYPCdC4wsDQ/XOKKrFs5FdI/AAAAAAAAiec/bwJeqRst-gsTFj1rPFO9s4l9njEM3crWgCLcBGAs/s72-c/Why%2Bdon%25E2%2580%2599t%2Bwe%2Bgrow%2Bto%2Bbe%2B10%2Bfeet%2Btall.jpg
Unplugged Magazine
https://unplugged.dearjulius.com/2019/05/why-dont-we-grow-to-be-10-feet-tall.html
https://unplugged.dearjulius.com/
https://unplugged.dearjulius.com/
https://unplugged.dearjulius.com/2019/05/why-dont-we-grow-to-be-10-feet-tall.html
true
7156791814370638008
UTF-8
Loaded All Posts Not found any posts VIEW ALL Read More Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy