Each of us has our own and very specific body odor. However, people often wish to have a more pleasant and fragrant body odor. So how do you know your body odor? Why does the body smell good? According to experts, body odor is mainly created from sweat and the billions of bacteria that grow under our skin. Body odor is fueled by fatty acids and proteins present in sweat. Currently, the problem of body odor becomes really important not only for women but also for men, especially those who do jobs that have to communicate and meet a lot. The body gives off a gentle scent that not only helps you feel comfortable, but the opposite person also has a good impression of you at first meeting. In addition, many researchers believe that body odor also greatly affects sexual, emotional and marital problems. If a woman or a man has a really pleasant body odor, it will easily help the other person enjoy intimate contact. Along with that, body scent also makes a good impression and keeps an image of you in his mind for a long time. However, many studies show that it is difficult to recognize body odor. People often tend to feel that their body is odorless. The reason is that our sense of smell has to be in constant contact with our body odor every day, thereby forming a habit of adapting to that scent, taking this for granted and not reporting scent signals. to the brain. That's why many people wonder how to know their body odor? One of the traditional, popular, and highly effective ways is to ask someone close to you "What do I smell like?", and you will get a candid comment.  Mùi cơ thể được tạo ra từ mồ hôi và hàng tỷ vi khuẩn sinh sôi dưới da The fact shows that some people from birth, even if they bathe 3 times a day, their body odor is still unpleasant, others even if they don't shower every day, their body still has no odor. Here are some reasons why the body smells or smells bad: Genetics: According to experts, the smell of sweat is closely related to genetics. Trimethylamine in the body often has a very specific odor and is called "rotten fish smell syndrome". This is a genetic metabolic disease, the newborn baby from the moment of birth has been infected with bacteria from the mother, residing on the skin, in the intestines, in the natural holes of the body... In addition , there is a gene responsible for transporting proteins and fatty acids in sweat glands that also cause body odor. Some peoples of the Far East do not have body odor because they do not have this gene. Due to eating and living habits: People with a pleasant body odor often eat and live very healthily. They eat very little spicy foods such as onions, garlic, asparagus, etc. In addition, cleaning the body every day also helps our skin to be less clogged and eliminates the impurities. bacteria that cause unpleasant odors. Keeping the body fragrant every day is always something that many people desire. To do this is not too difficult. Here are ways that can help you have a pleasant body odor every day: Drink enough water every day to help your body metabolize and eliminate toxins; Do not eat strong-smelling foods such as curry, garlic, onions,... Avoid drinking alcohol, smoking; Choose for yourself a suitable deodorant to use if your body has a strong odor; You should choose fabrics for sweat absorption and ventilation. Underwear and socks should be changed every day; Wash the body with soap every day, paying close attention to areas prone to odors such as armpits and genitals; Always live peacefully and joyfully, avoiding stress and anxiety; Try a few ways to get rid of body odor such as using alum, rosemary oil, peppermint oil, green tea, etc. In general, whether or not body odor is pleasant will depend on factors such as genetics. , diet, activities,... For those who have a slightly unpleasant innate body odor, if they try to follow the above methods, it can still be improved. Để được tư vấn trực tiếp, Quý Khách vui lòng bấm số HOTLINE hoặc đăng ký lịch trực tuyến TẠI ĐÂY. Tải ứng dụng độc quyền MyVinmec để đặt lịch nhanh hơn, theo dõi lịch tiện lợi hơn! XEM THÊM:
This is an automatically translated article. Each of us has our own and very specific body odor. However, people often wish to have a more pleasant and fragrant body odor. So how do you know your body odor? Why does the body smell good? 1. Where does body odor come from?According to experts, body odor is mainly created from sweat and the billions of bacteria that grow under our skin. Body odor is fueled by fatty acids and proteins present in sweat. Currently, the problem of body odor becomes really important not only for women but also for men, especially those who do jobs that have to communicate and meet a lot. The body gives off a gentle scent that not only helps you feel comfortable, but the opposite person also has a good impression of you at first meeting. In addition, many researchers believe that body odor also greatly affects sexual, emotional and marital problems. If a woman or a man has a really pleasant body odor, it will easily help the other person enjoy intimate contact. Along with that, body scent also makes a good impression and keeps an image of you in his mind for a long time. However, many studies show that it is difficult to recognize body odor. People often tend to feel that their body is odorless. The reason is that our sense of smell has to be in constant contact with our body odor every day, thereby forming a habit of adapting to that scent, taking this for granted and not reporting scent signals. to the brain. That's why many people wonder how to know their body odor? One of the traditional, popular, and highly effective ways is to ask someone close to you "What do I smell like?", and you will get a candid comment. Mùi cơ thể được tạo ra từ mồ hôi và hàng tỷ vi khuẩn sinh sôi dưới da 2. Why does the body smell good?The fact shows that some people from birth, even if they bathe 3 times a day, their body odor is still unpleasant, others even if they don't shower every day, their body still has no odor. Here are some reasons why the body smells or smells bad: Genetics: According to experts, the smell of sweat is closely related to genetics. Trimethylamine in the body often has a very specific odor and is called "rotten fish smell syndrome". This is a genetic metabolic disease, the newborn baby from the moment of birth has been infected with bacteria from the mother, residing on the skin, in the intestines, in the natural holes of the body... In addition , there is a gene responsible for transporting proteins and fatty acids in sweat glands that also cause body odor. Some peoples of the Far East do not have body odor because they do not have this gene. Due to eating and living habits: People with a pleasant body odor often eat and live very healthily. They eat very little spicy foods such as onions, garlic, asparagus, etc. In addition, cleaning the body every day also helps our skin to be less clogged and eliminates the impurities. bacteria that cause unpleasant odors. 3. Ways to help smell goodKeeping the body fragrant every day is always something that many people desire. To do this is not too difficult. Here are ways that can help you have a pleasant body odor every day: Drink enough water every day to help your body metabolize and eliminate toxins; Do not eat strong-smelling foods such as curry, garlic, onions,... Avoid drinking alcohol, smoking; Choose for yourself a suitable deodorant to use if your body has a strong odor; You should choose fabrics for sweat absorption and ventilation. Underwear and socks should be changed every day; Wash the body with soap every day, paying close attention to areas prone to odors such as armpits and genitals; Always live peacefully and joyfully, avoiding stress and anxiety; Try a few ways to get rid of body odor such as using alum, rosemary oil, peppermint oil, green tea, etc. In general, whether or not body odor is pleasant will depend on factors such as genetics. , diet, activities,... For those who have a slightly unpleasant innate body odor, if they try to follow the above methods, it can still be improved. For direct consultation, please dial HOTLINE or register for an appointment at the hospital HERE. Download the exclusive MyVinmec to make appointments faster and be able to track your orders. XEM THÊM: Body odor or body odour (BO) is present in all animals and its intensity can be influenced by many factors (behavioral patterns, survival strategies). Body odor has a strong genetic basis, but can also be strongly influenced by various diseases and physiological conditions. Though body odor has played an important role (and continues to do so in many life forms) in early humankind, it is generally considered to be an unpleasant odor amongst many human cultures.
In humans, the formation of body odors is caused by factors such as diet, sex, health, and medication, but the major contribution comes from bacterial activity on skin gland secretions.[1] Humans have three types of sweat glands: eccrine sweat glands, apocrine sweat glands and sebaceous glands. Eccrine sweat glands are present from birth, while the latter two become activated during puberty.[2] Among the different types of human skin glands, body odor is primarily the result of the apocrine sweat glands, which secrete the majority of chemical compounds that the skin flora metabolize into odorant substances.[1] This happens mostly in the axillary (armpit) region, although the gland can also be found in the areola, anogenital region, and around the navel.[3] In humans, the armpit regions seem more important than the genital region for body odor, which may be related to human bipedalism. The genital and armpit regions also contain springy hairs which help diffuse body odors.[4] The main components of human axillary odor are unsaturated or hydroxylated branched fatty acids with E-3M2H (E-3-methylhex-2-enoic acid) and HMHA (3-hydroxy-3-methylhexanoic acid), sulfanylalkanols and particularly 3M3SH (3-methyl-3-sulfanylhexan-1-ol), and the odoriferous steroids androstenone (5α-androst-16-en-3-one) and androstenol (5α-androst-16-en-3α-ol).[5] E-3M2H is bound and carried by two apocrine secretion odor-binding proteins, ASOB1 and ASOB2, to the skin surface.[6] Body odor is influenced by the actions of the skin flora, including members of Corynebacterium, which manufacture enzymes called lipases that break down the lipids in sweat to create smaller molecules like butyric acid. Greater bacteria populations of Corynebacterium jeikeium are found more in the armpits of men, whereas greater population numbers of Staphylococcus haemolyticus are found in the armpits of women. This causes male armpits to give off a rancid/cheese-like smell, whereas female armpits give off a more fruity/onion-like smell.[7] Staphylococcus hominis is also known for producing thioalcohol compounds that contribute to odors.[8] These smaller molecules smell, and give body odor its characteristic aroma.[9] Propionic acid (propanoic acid) is present in many sweat samples. This acid is a breakdown product of some amino acids by propionibacteria, which thrive in the ducts of adolescent and adult sebaceous glands. Because propionic acid is chemically similar to acetic acid, with similar characteristics including odor, body odors may be identified as having a vinegar-like smell by certain people.[citation needed] Isovaleric acid (3-methyl butanoic acid) is the other source of body odor as a result of actions of the bacteria Staphylococcus epidermidis,[10] which is also present in several types of strong cheese. Factors such as food, drink, and diseases can affect body odor,[4] as can lifestyle and genetics.[citation needed] In many animals, body odor plays an important survival function. Strong body odor can be a warning signal for predators to stay away (such as porcupine stink), or it can also be a signal that the prey animal is unpalatable.[11] For example, some animals species, who feign death to survive (like opossums), in this state produce a strong body odor to deceive a predator that the prey animal has been dead for a long time and is already in the advanced stage of decomposing. Some animals with strong body odor are rarely attacked by most predators, although they can still be killed and eaten by birds of prey, which are tolerant of carrion odors.[citation needed] Body odor is an important feature of animal physiology. It plays a different role in different animal species. For example, in some predator species that hunt by stalking (such as big and small cats), the absence of body odor is important, and they spend plenty of time and energy to keep their body free of odor. For other predators, such as those that hunt by visually locating prey and running for long distances after it (such as dogs and wolves), the absence of body odor is not critical. In most animals, body odor intensifies in moments of stress and danger.[12] HumansSebaceous and apocrine glands become active at puberty. This, as well as many apocrine glands being close to the sex organs, points to a role related to mating.[4] Compared to other primates, humans have extensive axillary hair and have many odor producing sources, in particular many apocrine glands.[13] In women, the sense of olfaction is strongest around the time of ovulation, significantly stronger than during other phases of the menstrual cycle and also stronger than the sense in males.[14] Humans can olfactorily detect blood-related kin.[15] Mothers can identify by body odor their biological children, but not their stepchildren. Preadolescent children can olfactorily detect their full siblings, but not half-siblings or step-siblings, and this might explain incest avoidance and the Westermarck effect.[16] Babies can recognize their mothers by smell while mothers, fathers, and other relatives can identify a baby by smell.[4] Humans have few olfactory receptor cells compared to dogs and few functional olfactory receptor genes compared to rats. This is in part due to a reduction of the size of the snout in order to achieve depth perception as well as other changes related to bipedalism. However, it has been argued that humans may have larger brain areas associated with olfactory perception compared to other species.[13] Studies have suggested that people might be using odor cues associated with the immune system to select mates. Using a brain-imaging technique, Swedish researchers have shown that homosexual and heterosexual males' brains respond in different ways to two odors that may be involved in sexual arousal, and that homosexual men respond in the same way as heterosexual women, though it could not be determined whether this was cause or effect. When the study was expanded to include lesbian women, the results were consistent with previous findings – meaning that lesbian women were not as responsive to male-identified odors, while responding to female odors in a similar way as heterosexual males.[17] According to the researchers, this research suggests a possible role for human pheromones in the biological basis of sexual orientation.[18] World map of the distribution of the A allele of the single nucleotide polymorphism rs17822931 in the ABCC11 gene. The proportion of A alleles in each population is represented by the white area in each circle. Body odor is largely influenced by major histocompatibility complex (MHC) molecules. These are genetically determined and play an important role in immunity of the organism. The vomeronasal organ contains cells sensitive to MHC molecules in a genotype-specific way.[citation needed] Experiments on animals and volunteers have shown that potential sexual partners tend to be perceived more attractive if their MHC composition is substantially different. Married couples are more different regarding MHC genes than would be expected by chance. This behavior pattern promotes variability of the immune system of individuals in the population, thus making the population more robust against new diseases. Another reason may be to prevent inbreeding.[4] ABCC11The ABCC11 gene determines axillary body odor and the type of earwax.[5][19][20][21] The loss of a functional ABCC11 gene is caused by a 538G>A single-nucleotide polymorphism, resulting in a loss of body odor in people who are specifically homozygous for it.[21][22] Firstly, it affects apocrine sweat glands by reducing secretion of odorous molecules and its precursors.[5] The lack of ABCC11 function results in a decrease of the odorant compounds 3M2H, HMHA, and 3M3SH via a strongly reduced secretion of the precursor amino-acid conjugates 3M2H–Gln, HMHA–Gln, and Cys–Gly–(S) 3M3SH; and a decrease of the odoriferous steroids androstenone and androstenol, possibly due to the reduced levels and secretion of DHEAS and DHEA (possibly bacterial substrates for odoriferous steroids).[5] Secondly, it is also associated with a strongly reduced/atrophic size of apocrine sweat glands and a decreased protein (such as ASOB2) concentration in axillary sweat.[5] The non-functional ABCC11 allele is predominant among East Asians (80–95%), but very low in other ancestral groups (0–3%).[5] Most of the world's population has the gene that codes for the wet-type earwax and average body odor; however, East Asians are more likely to inherit the allele associated with the dry-type earwax and a reduction in body odor.[5][19][21] The hypothesized reduction in body odor may be due to adaptation to colder climates by their ancient Northeast Asian ancestors.[19] However, research has observed that this allele is not solely responsible for ethnic differences in scent. A 2016 study analyzed differences across ethnicities in volatile organic compounds (VOCs), across racial groups and found that while they largely did not differ significantly qualitatively, they did differ quantitatively. Of the observed differences, they were found to vary with ethnic origin, but not entirely with ABCC11 genotype.[23] It has been noted that there is currently no evidence that sweat secretion glands nor sweat production varies across ethnicities.[24] One large study failed to find any significant differences across ethnicity in residual compounds on the skin, including those located in sweat.[25] If there were observed ethnic variants in skin odor, one would find sources to be much more likely in diet, hygiene, microbiome, and other environmental factors.[26][23][27] Research has indicated a strong association between people with axillary osmidrosis and the ABCC11-genotypes GG or GA at the SNP site (rs17822931) in comparison to the genotype AA.[21]
* ND indicates that no detectable peak is found on the [M+H]+ ion trace of the selected analyte at the correct retention time. Body odor may be reduced or prevented or even aggravated by using deodorants, antiperspirants, disinfectants, underarm liners, triclosan, special soaps or foams with antiseptic plant extracts such as ribwort and liquorice, chlorophyllin ointments and sprays topically, and chlorophyllin supplements internally. Although body odor is commonly associated with hygiene practices, its presentation can be affected by changes in diet as well as the other factors.[30] Skin spectrophotometry analysis found that males who consumed more fruits and vegetables were significantly associated with more pleasant smelling sweat, which was described as "floral, fruity, sweet and medicinal qualities".[31] IndustryAs many as 90% of Americans and 92% of teenagers use antiperspirants or deodorants.[32][33] In 2014, the global market for deodorants was estimated at US$13.00 billion with a compound annual growth rate of 5.62% between 2015 and 2020.[34] Osmidrosis or bromhidrosis is defined by a foul odor due to a water-rich environment that supports bacteria, which is caused by an abnormal increase in perspiration (hyperhidrosis).[20] This can be particularly strong when it happens in the axillary region (underarms). In this case, the condition may be referred to as axillary osmidrosis.[20] The condition can also be known medically as apocrine bromhidrosis, ozochrotia, fetid sweat, body smell, or malodorous sweating.[35][36] Trimethylaminuria (TMAU), also known as fish odor syndrome or fish malodor syndrome, is a rare metabolic disorder where trimethylamine is released in the person's sweat, urine, and breath, giving off a strong fishy odor or strong body odor.[37]
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