men and women each have a "longevity height", scientists found after studying 2.85 million people
2024-09-27
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whether height affects lifespan may be a topic that many people are interested in. some people believe that tall people live longer, and some studies have found that "short people have longevity genes."
recently, a study gave specific numerical values for the longevity height of men and women.
ma jianhua, chief physician of the department of orthopedics, beijing geriatric hospitalgeng yahui, chief physician of the endocrinology department of beijing geriatric hospitalshen jing, deputy chief physician of the department of hematology, beijing friendship hospital affiliated to capital medical universityzuo xiumei, deputy chief physician of the department of neurology, xuanwu hospital, capital medical universityscientists: both men and women have "longevity height"
a study published in the medical journal european journal of public health found a u-shaped association between height and all-cause mortality, with mortality rates increasing when height was below or above a certain value.the study included a total of 15 articles involving more than 2.85 million participants andmore than 1.53 million deathspieces, scientists conducted analyzes based on these data to explore the relationship between height and longevity.the study concluded:the optimal height for men is 174 cm(risk of all-cause death reduced by 47%); for women, the optimal height is 158 cm(risk of all-cause death reduced by 33%)。researchers have several explanations for why height affects lifespan:- physiological structure:being taller means the heart has to work harder to pump blood to the extremities, so the risk of heart damage increases;
- metabolic rate:if you are too tall, cell metabolism will be more frequent. from a negative impact, it may increase the risk of cell mutations and abnormalities, leading to diseases;
- genes and environment:height is not only affected by genetic factors, but also closely related to a person's nutritional status and socioeconomic status in his early life, which in turn affects life span.
researchers said that although height affects lifespan, it is not a decisive factor. what is more important is to maintain an active and healthy lifestyle.a formula to calculate your genetic height
height is affected by about 70% of the genetic influence of parents' height. in other words, the taller the parents are, the greater the child's potential to grow taller.there is a calculation formula in genetics. based on this value, ±5 cm is the height range of the child’s inherited parents:
a boy’s adult height = (father’s height + mother’s height + 13 cm)/2
a girl’s adult height = (father’s height + mother’s height – 13 cm)/2
in the "evaluation of height development levels of children and adolescents aged 7 to 18 years old" issued by the national health commission, children's height development levels are divided into 5 levels (1sd represents 1 standard deviation):inferior: height＜-2sd
lower-medium level: height ≥-2sd and <-1sd
medium: height ≥-1sd and ≤+1sd
upper middle level: height＞+1sd and ≤+2sd
superior: height＞+2sd
height development grade cutoff table for children and adolescents aged 7 to 18 years old
short stature can be diagnosed if the height is -2sd lower than the normal population.it is recommended that this group of people go to a specialized short stature clinic for relevant examinations in time to determine whether there is growth hormone deficiency, idiopathic short stature, central precocious puberty, small for gestational age, andturner syndromeand other pathological conditions.in addition to height, if you want to live longer, you must maintain three indicators:
height represents the health of the human skull, spine and long bones of the lower limbs.as age increases, height will steadily decrease year by year. if the decrease exceeds the normal range, it indicates abnormal changes in the spine and lower limb bones.
in addition to obesity, sudden weight loss also indicates some hidden diseases, such as digestive system diseases, endocrine system diseases, infectious diseases, rheumatic diseases, advanced cardiopulmonary diseases, and even malignant tumors.if you have not carried out intensive weight loss recently and your weight has dropped by more than 10 kilograms within a few months, you should pay attention.invisible body defense line
decreased platelets in the body will affect normal coagulation function, and a sudden drop may be dangerous. it can range from nosebleeds, gum bleeding, and menstrual bleeding to severe cases, including intracranial or gastrointestinal bleeding.
plateletsthe value range is (50~100) × 109 cells/liter, which is a mild reduction. even if there is no tendency of skin or mucous membrane bleeding, you should seek medical treatment as soon as possible;if the value is lower than 20×109 cells/liter, especially if accompanied by symptoms such as bleeding, you should go to the hospital for emergency treatment.it should be reminded that pregnancy-related thrombocytopenia is reversible. as long as the blood count per cubic millimeter is not less than 70,000, there is no need to worry too much.there are many causes of sudden memory loss. in addition to alzheimer's disease, vascular dementia caused by cerebrovascular disease, parkinson's disease dementia, etc. may cause a significant decline in the patient's memory.
the symptoms of early memory loss are not obvious. a common symptom is the inability to remember recent events. when the symptoms worsen and even the ability to perform daily activities is lost, it is a more serious stage of dementia.▲editor of this issue: zhang yu
