Body odour and sexual attraction

Body odor and subconscious human sexual attractionfinding the smell sexy and the two partners having ''different'' compatibility genesnatural body smellsmelling more attractive
Odour is sensory stimulation of the olfactory membrane of the nose by a group of molecules.wikipedia
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Ovulatory shift hypothesis

Women in the fertile phase are often rated as being more physically attractive, smelling more attractive, and having higher-pitched voices.

Body odor

body odourB.O.odor
Certain body odours are connected to human sexual attraction.

Sexual attraction

sex appealsexual attractivenesssexual interest
Certain body odours are connected to human sexual attraction.

Reproductive success

passing ofreproductive assurancereproductive outcomes
Body odour may provide significant cues about the genetic quality, health and reproductive success of a potential mate.

Human biology

Human biologistbiologicalBiology
Body odour affects sexual attraction in a number of ways including through human biology, the menstrual cycle and fluctuating asymmetry.

Menstrual cycle

menstrual periodmenstrualmenstruating
Body odour affects sexual attraction in a number of ways including through human biology, the menstrual cycle and fluctuating asymmetry.

Fluctuating asymmetry

symmetry
Body odour affects sexual attraction in a number of ways including through human biology, the menstrual cycle and fluctuating asymmetry.

Major histocompatibility complex

MHCmajor histocompatibility complex (MHC)HLA loci
The major histocompatibility complex genes are important for the immune system, and appear to play a role in sexual attraction via body odour. This includes the role of the major histocompatibility complex (MHC), the human leukocyte antigen (HLA) and their different heterozygotic variations.

Olfactory bulb

olfactory bulbsolfactory lobesolfactory lobe
Chemicals that produce odour pass through the olfactory membrane to the olfactory bulbs, which contain biological receptors that detect the chemicals, and respond with an electrical signal transmitted to the brain by the olfactory nerves.

Vomeronasal organ

Jacobson's organvomeronasalVomeronasal system
This all happens in the vomeronasal organ, which is used to detect others pheromones.

Genetics

geneticgeneticistgenetically
There is a relationship between various aspects of human biology and genetics with sexual attraction.

Human leukocyte antigen

HLAhuman leukocyte antigenshuman leukocyte antigen (HLA)
This includes the role of the major histocompatibility complex (MHC), the human leukocyte antigen (HLA) and their different heterozygotic variations. The human leukocyte antigen system is a gene complex which encodes MHC in humans.

Zygosity

homozygousheterozygousHomozygote
This includes the role of the major histocompatibility complex (MHC), the human leukocyte antigen (HLA) and their different heterozygotic variations.

Immune system

immuneimmune responseimmune function
The MHC (major histocompatibility complex) is a group of genes essential for the immune system, playing an important role in immunological recognition.

Dominance (genetics)

autosomal recessiverecessiveautosomal dominant
MHC is expressed codominantly; a more diverse set of MHC genes leads to a stronger immune system.

Inbreeding avoidance

incest avoidanceavoid inbreedingavoiding close inbreeding
This inbreeding avoidance hypothesis proposes that biases towards heterozygotic alleles prevent harmful genetic consequences which can arise from mating with genetic family members.

Supergene

gene complexgene complexessuper gene
The human leukocyte antigen system is a gene complex which encodes MHC in humans.

Peptide

polypeptidepeptidespolypeptides
Over thirty olfactory receptor genes have been located at the HLA class I region, which presents peptides from inside the cell to be destroyed by the immune system.

Pheromone

pheromonespheromonalalarm pheromone
Men and women are attracted to the pheromones they produce and HLA is related to the perceptions of other peoples' odours.

Androstenol

3α-androstenolandrostenols
Males produce androstenol and androstenone.

Androstenone

Males produce androstenol and androstenone.

Heterozygote advantage

heterozygous advantageevolutionary trade-offEvolutionary trade-offs
Heterozygosity of HLA can also be detected through scent: in this case, heterozygosity confers greater ability to recognize a wider variety of antigens.

Antigen

antigensantigenicantigenic proteins
Heterozygosity of HLA can also be detected through scent: in this case, heterozygosity confers greater ability to recognize a wider variety of antigens.