Bacteria in your gut could affect your mental health.
It was found that people claiming to have a ‘high quality’ and happy life were more likely to have high levels of two bacteria in their guts - Faecalibacterium and Coprococcus - whilst those with depression had lower levels of Dialister and Coprococcus bacteria. 
A quick search on Google states that more than 90% of serotonin (the neurotransmitter for ‘happiness’ and ‘good mood’) and about 50% of dopamine (the neurotransmitter for ‘pleasure’) in a person are present in their gut. 
Many of you might already know of our ‘second brain’ - the enteric nervous system (ENT for short) - which is practically an entire infrastructure of neurons in our guts. Our digestive systems send information to our primary brain, and vice-versa (so things like when the stomach is full, controlling acid levels, blood flow, etc… ) This is called the Gut-Brain Axis. 
The study showed that bacteria could ‘communicate’ with our brains. Obviously nothing as complicated as the latest gossip online, but mainly that they could produce neurotransmitters and help pass them along. 
Regardless of how fascinating it may sound, there’s still the problem of ‘correlation does not show causation’. As much as it’s easy to assume that certain gut bacteria cause depression, it could also be said that having depression can affect the bacterial makeup in your digestive tract.
What everyone agrees on though, is that a good diet is always positive for a human being. Unprocessed carbohydrates, lots of veggies and fruits, and occasional meat and sweets is the way to do it 👌🏻 Things like sauerkraut, kimchi and miso are also generally valued for a healthy and varied gut flora, whilst probiotic pills are still not a sure thing.
On another note, we all know that the colostrum (the early breast milk that a baby feeds on) is essential to give them immunization and the first bacteria for their guts… but what if that’s not the only way?
Studies have shown that natural, vaginal birth deliveries might actually be the most important way that a baby’s gut bacterial makeup is influenced for the better. Apparently, contact (ok, since we can all be serious adults here, it’s actually INGESTION) of vaginal fluids kickstarts a goody bomb of bacteria in a baby’s gut. 
And apparently, babies delivered through caesarian were more likely to develop allergies, asthma, eczema, obesity, digestive or other issues.
Will you look at that 👀
This is why more and more doctors are now applying vaginal fluids on babies born through caesarian, a procedure called ‘vaginal seeding’. The baby is swabbed on their body, face and inside their mouths - which is a relatively quick and painless act. 
Do you also remember the Coprococcus bacterium mentioned at the beginning? The one that is present in ‘happy’ and ‘healthy’ people? Well, it’s present in more places than just a person’s gut and consequently their poop: mainly at the mouth and vagina as well. So if Coprococcus is actually proved to cause happiness and healthiness, make sure to only eat out happy, non-obese ladies ;D Just a friendly advice to my fellow male friends.
But if licking girls is not your style, feacal inoculations also work - which are kindly donated by healthy peeps (give me a call if you’re in need of one).
Moreover, I guess eating ass works too.
Pick up your toys. Pick up your toys. Pick up your toys. --------->