We all know what LSD is Lysergic acid diethylamide. LSD or ‘acid’ is a powerful hallucinogenic drug. LSD is one of the most potent, mood-changing chemicals . It is also called -The  Mood Changer .

But here we are not speaking of The LSD Drug but obviously we will speak of the mood changing chemicals. The chemicals inside our brain which excites the hormonal activities of our body.

Yes “LSD”- Love Sex and Dhoka (Betrayal) . A title of the film directed by Dibakar Banerjee and produced by Ekta Kapoor , Shobha Kapoor and Priya Sreedharan.

But here we are not even speaking about the film or its story . We are are speaking about the facts behind the title LSD. The facts that can be explained scientifically to some extent and some beyond the explanation of science as science is still unable to fully understand the human brain and the miracles it does.

Neuroscientists have devoted great efforts to answer the basic questions about eating, drinking, breathing and moving; they have also been striving to understand how we perceive, think, sleep and remember.

But what about sex? Taboos in many cultures, moral censorship and the immaturity of the social, psychological and physiological sciences in these fields have impeded for a long time research concerning human sexual behaviour.

Today, we find many studies concerning the embryological, genetic and biological aspects of the reproductive apparatus, such as the spermatozoa and ova, fertilization, development and birth, as well as the anatomy of the genital tracts in both sexes. We also find a lot of information about the anthropological, social and cultural aspects of sexual behavior. However, the literature describes very few studies on the physiology of the human sexuality and how the brain organizes the sexual behavior.


The human sexuality is closely related to reproductive behavior in terms of propagation and the survival of the species as well their neural and physiological mechanisms. However, sexuality not always results in reproduction because it is a motivated behavior. The success in completing the sexual act depends on local excitation and psychic stimulus.

Sexual behavior, arousal, and motivation occur only in special environmental situations which provide particular types of sensory stimulation. No amount of stimulation will arouse sexual motivation and behavior unless the organism is physically ready to mate. This physiological readiness to respond selectively to sexual stimuli is provided by hormonal changes which affect neural as non-neural mechanisms throughout the body.

Mating, like feeding, takes place under a combination of nervous and hormonal control. Much of this control is mediated by parts of the nervous system within the “visceral brain”, which is phylogenetically the oldest part of the human brain. It is comprised by a group of structures located in the inferior part of the forebrain and around it, called the hypothalamus, the hypophysis and the limbic system as well as the mesencephalon (the midbrain).

But when it it come to LSD

People generally don’t understand Why We Cheat On People We Love.

What is love?

“”Love is a variety of different feelings, states, and attitudes that ranges from interpersonal affection to pleasure . It can refer to an emotion of a strong attraction and personal attachment.  It can also be a virtue representing human kindness , compassion and affection—”the unselfish loyal and benevolent concern for the good of another”. It may also describe compassionate and affectionate actions towards other humans, one’s self or animals. “” – As described in Wikipedia.

But Biological models of sex tend to view love as a mammalian drive, much like hunger or thirst. Helen Fisher, a leading expert in the topic of love, divides the experience of love into three partly overlapping stages: lust, attraction, and attachment. Lust is the feeling of sexual desire ; romantic attraction determines what partners mates find attractive and pursue, conserving time and energy by choosing; and attachment involves sharing a home, parental duties, mutual defense, and in humans involves feelings of safety and security. Three distinct neural circuitries, including neurotransmitters, and three behavioral patterns, are associated with these three romantic styles.

Lust is the initial passionate sexual desire that promotes mating, and involves the increased release of chemicals such as testosterone and estrogen. These effects rarely last more than a few weeks or months. Attraction is the more individualized and romantic desire for a specific candidate for mating, which develops out of lust as commitment to an individual mate forms. Recent studies in neuroscience have indicated that as people fall in love, the brain consistently releases a certain set of chemicals, including the neurotransmitter hormones, dopamine, norepinephrine, and serotonin, the same compounds released by amphetamine, stimulating the brain’s pleasure center and leading to side effects such as increased heart rate, loss of appetite and sleep, and an intense feeling of excitement. Research has indicated that this stage generally lasts from one and a half to three years.

Since the lust and attraction stages are both considered temporary, a third stage is needed to account for long-term relationships. Attachment is the bonding that promotes relationships lasting for many years and even decades. Attachment is generally based on commitments such as marriage and children, or on mutual friendship based on things like shared interests. It has been linked to higher levels of the chemicals oxytocin and vasopressin to a greater degree than short-term relationships have.



PSYCHOLOGY  depicts love as a cognitive and social phenomenon. Psychologist Robert Sternberg formulated a triangular theory of love and argued that love has three different components: intimacy, commitment, and passion. Intimacy is a form in which two people share confidences and various details of their personal lives, and is usually shown in friendships and romantic love affairs. Commitment, on the other hand, is the expectation that the relationship is permanent. The last and most common form of love is sexual attraction and passion. Passionate love is shown in infatuation as well as romantic love. All forms of love are viewed as varying combinations of these three components. Non-love does not include any of these components. Liking only includes intimacy. Infatuated love only includes passion. Empty love only includes commitment. Romantic love includes both intimacy and passion. Companionate love includes intimacy and commitment. Fatuous love includes passion and commitment. Lastly, consummate love includes all three.


Its a never ending topic to explain but to draw conclusion i would say- “It’s an obsession,” Fisher said in TED Talk

What’s going on biologically is far less romantic, and it explains why we sometimes cheat on those we love.

Special thanks to Dr Helen E. Fisher, TED TALK  and Wikipedia.

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