Scientists Identify Happiness Gene

What your whole life looks like under a microscope.
From KQED.

TGDaily reports that researchers have found a gene that controls the flow of serotonin to the brain, which in turn affects overall life satisfaction. Jan-Emmanuel De Neve of the London School of Economics and Political Science conducted the study, wherein he examined genetic data from 2,500 participants of the US National Longitudinal Study of Adolescent Health. De Neve specifically looked for variations of the 5-HTT gene.

This gene can have long or short variations, with the long forms being more efficient and therefore able to create more serotonin transporters in cell membranes. When De Neve's team looked at how satisfied participants were with their lives on a five-point scale (very satisfied, satisfied, dissatisfied, very dissatisfied, or none of the above), they found that a whopping 70% of those with the efficient 5-HTT gene variation (long-long) were either very satisfied or satisfied, compared with just 19% of those with the inefficient version (short-short). Possessing even one long version of the gene allele can increase one's likelihood of being "very satisfied" by 8.5%.

Happiness has long been known to have a genetic component (such as in the work of Sonja Lyubomirsky, who says that happiness is 50% genetic), but this may be the first study to show a clear link between one single gene and life satisfaction. De Neve explains, "It has long been suspected that this gene plays a role in mental health but this is the first study to show that it is instrumental in shaping our individual happiness levels." While other genes may also have a role in happiness, De Neve says, "This finding helps to explain why we each have a unique baseline level of happiness and why some people tend to be naturally happier than others."

Casual Friday: Foods That Make You Happier

You are what you eat! Don't you want to look
like this? Portrait by Giuseppe Arcimboldo.
From Wikipedia.

Today I thought it would be nice to highlight diet tips that can improve your mood, using this article by Elsa Jones from Herald.ie and this article by Mary Bourgeois from Top Wire XS as guidance. As most of you probably know, food can have a big effect on levels of your serotonin, also known as the "happiness hormone" (even though it's a neurotransmitter, not a hormone). But what kind of diet is best? Let's find out!

1. Eat folate-rich foods. A study by the University of York and the Hull York Medical School showed that low folate levels can lead to depression, so eat foods like peas, bananas, oranges, broccoli, and others like them.
2. Eat protein with every meal. Protein-rich food keeps blood sugar balanced and contains tryptophan, which is necessary for serotonin production. Some good foods in this category are turkey, cottage cheese, and bananas.
3. Eat B vitamins, especially B6. B vitamins help with serotonin production, but B6 also helps in the metabolism of red blood cells. B-vitamin foods include oats, leafy green vegetables, and eggs.
4. Eat omega-3 foods, like fish. A study by the Journal of Clinical Psychiatry showed that eating fish capsules three times a day improved bipolar and depression patients' moods after eight weeks. This makes sense because omega-3 helps create dopamine (another neurotransmitter related to happiness) and slows the breakdown of serotonin.
5. Eat vitamin D. Most of us don't get enough vitamin D from sunlight, especially in the winter, which can cause problems because this vitamin is a mood booster. Some good vitamin-D foods are oily fish, leafy green vegetables, and eggs.

So there you have it. Give some of these tips a try. You'll probably be glad you did!