In recent decades many have observed that certain people are always optimistic. Naturally, researchers who requested funding to study if “optimism” could be inherited did get some money. Any major answer? The 5-HTT gene family: The feeling of satisfaction is apparently controlled by the 5-HTT gene family. It probably may not be the only gene family that controls the feeling of satisfaction but it has been the one most studied. There are many members in the 5-HTT gene family with various functions. One member controls satisfaction levels while another member controls marital bliss.
Satisfaction level controlled by a gene?
We found that this single, collaborative article published in the Journal of Neuroscience answered our question the best, given today’s technological knowledge and funding set aside for the pursuit of a happy society. The article, “Genes, Economics and Happiness” studied the feeling of subjective well being in twins in a genetic association study. Studying twins makes sense because scientific studies require a “control”, with which they can compare any differences, such as environment and economics, all other factors being equal. Who can be a better control than a person’s own twin? Let’s find what these scientists collaborating between four universities in three countries summarized. Subjects were asked questions like, “How satisfied are you with your life as a whole?”
1. About 33% of life’s satisfaction can be explained by genetic variation – you inherit your family’s feelings of satisfaction.
2. There are molecular genetic associations with subjective well being – meaning that although previous studies have shown that there is a baseline happiness that is inherited from family, certain experiences can interfere with that baseline. An indirect molecular effect of life’s stressful events?
3. As an example, they studied in detail the Serotonin Transporter gene (5-HTTLPR, also named SLC6A4), or SERT a key brain protein it encodes. Serotonin is a chemical released by one neuron and received by another neuron. The protein has a longer form and a shorter form. Initial findings suggested that families that inherited the longer form were more satisfied. But this study produced mixed results, implying that certain experiences can interfere with the length of this gene. The 5-HTT gene has been studied for over 20 years. This gene encodes a protein (located on the cell surface membrane) that absorbs serotonin into the neuron in parts of the brain that influences mental states.
4. Heritability of happiness rises as people age. At different points in life’s course genes and environment play a different role.
5. In particular, gender does not systematically effect happiness.
6. There are other genes with functions involved in gene-environment interactions and satisfaction.
This study encourages economists to consider biological differences in their studies. Economists are interested in the impact of income or unemployment on feelings of satisfaction. Psychologists describe a “set point” or “happiness levels” that exist in families. Since, optimism is linked in families carrying a more efficient version of the 5-HTT gene, all of us are interested.
Wedded bliss gene?
There is recent evidence for a wedded bliss gene. Scientists have long observed that married people are generally happier than divorced people. Couples with the 5-HTTLPR gene were most happy in their marriages. Couples with two shorter forms of this gene are likelier to be happier in a compatible relationship rather than suffer in a bad one. Emotion is an important element in marital bliss. The marriage thrives under certain emotional levels. People who inherit the two longer forms of this gene respond less to emotional levels in marriage. Read, “Claudia Haase’s New Study links DNA Marital Happiness“.
Can we be re-engineered biologically to be happier?
If we do have this satisfaction gene and we find that some of us do not have this happiness gene, then what? Will it be allowed by FDA to walk into a clinic to get diagnosed “for a happiness gene” and then get a bioengineered happiness gene if the doc says we lack one? Will insurance pay for such a happiness – gene – bioengineering therapy? What will it’s medical code termininology read like? Will insurance pay for “diagnosing a SNP or marker” that causes change in the “happiness gene” in an unhappy individual?
Pursue Natural felt it could begin by searching for any peer – reviewed published work on happiness genes. Peer – reviewed would indicate that fellow scientists respect the methodology or scientific thoroughness with which this scientist approached the issue of discovering the happiness gene. We discussed above our findings. What are your opinions on the happiness gene? . Can you imagine the impact of an eternally happy society?
Other Authors who have recently discussed the Happiness factor
Happiness from having a purpose in life linked with gene activity
Your happiness type matters
Happiness can affect your genes
Looking to genes for the secret to happiness
Wedded bliss or blues? Scientists link DNA to marital satisfaction