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Here are some of the most common high serotonin personality traits:
- Tiredness/lethargy, easily tired and even chronic fatigue syndrome (due to elevated 5-HT2A receptor) (R, R).
- Inhibiting TPH prevents this fatigue. However, serotonin isn’t the only neurotransmitter involved in fatigue, but also cortisol, acetylcholine, noradrenaline, the serotonin:dopamine ratio, kynurenine pathway, etc.
- Overexcitation – ADD, ADHD, get distracted easily, anxiety, impulsivity, restlessness, overthinking, rumination, etc. (due to elevated 5-HT2A receptor) (R).
- Rigid thinking and mental inflexibility (R). Some studies actually say that activation of the 5-HT2A receptor (via psychedelics such as LSD, shrooms, etc.) reduce rigid thinking, but this is actually because it stimulates glutamate release, which then stimulates dopamine release via the NMDA receptor and dopamine is involved in creativity and flexible thinking (R). Plus, after psychedelics exposure, people usually feel a kind of “bliss” for a week or two afterward, and this is due to 5-HT2A downregulation.
- Depressed, sadness, feeling down, reduced desire to do other things like go out and have fun, social anxiety and withdrawal, etc. (R, R, R)
- Reduced cognitive function (not necessarily lack of knowledge, but intuitive thinking) (R). However, they might think they are smart and have all the answers in a very authoritative way.
- Narcissistic (R) – delusions of grandeur, fantasize about power, exaggerated sense of self-importance, requiring constant admiration, etc.
- Reduced senses (sensory perception) – anhedonia, apathy, reduced smell, hearing, taste, sensation, euphoria to music, etc. (R, R)
- Overly analytical, with a negative bias (R).
- Cynical, negative, doesn’t look at the bright side of life (R).
- Feel “icky” – often just want to be left alone.
- Non-assertive – rather rude and aggressive dominate, which might come over as assertiveness, but is totally the opposite (5-HT2C is inversely correlated with assertiveness) (R). As Philosopher Eric Hoffer said: “Rudeness is the weak man’s imitation of strength.” (R)
- OCD (5-HT2C activation increases compulsivity and lowers dopamine and noradrenaline) (R, R, R).
- Aversive, passive-aggressive, but can also be full-on aggressive and violent (R).
- Don’t care about the consequences of wrong decisions. This can also be due to low dopamine (place less weight upon the magnitude of bad outcomes) (R). Life feels like a joke or means nothing.
- Anticipation anxiety, enhanced anticipation of, and sensitivity to threat-related stimuli, punishment, and negative feedback (R).
- Emotionally unstable – very sensitive to emotional triggers (feels like you have to walk on eggs around the person), get easily triggered emotionally due to a traumatic experience with someone in the past, emotional and argumentive about their beliefs and views, etc. (R, R)
- Bullying – this is usually due to trauma early on in life of being abused, either mentally or physically themselves and now they do it to others.
- Reduced verbal fluency, memory, attention, planning ability, and psychomotor performance (R, R, R, R). However, estrogen and serotonin promote the desire to talk, thus people with high estrogen and serotonin talk a lot.
- Fearful – scared of losing, low confidence and assertiveness.
- Futile patience (keep on waiting to receive something, even if it’s improbable or irrational) and obedient (due to not wanting to rock the boat, scared, “zombified”, not questioning things, etc.) (R, R).
- Suicidal – thoughts and even attempts (R, R, R).
- Delirious (R).
- Mood swings – bipolar mania (R, R). Antagonism of 5-HT2A (which lowers excess glutamate) and the histamine receptor H1 and agonism of the 5-HT1A receptor (which lowers serotonin) helps.
- Easily agitated, argumentative, violent, aggressive, intermittent explosive disorder (R, R).
- Psychopathic behavior (R).
- Non-likable – It is shown that males find high serotonin females less attractive and act more aggressively towards them (R). However, high serotonin people do attract others that are similar to them (who also have elevated serotonin).
Thyroid/t3
Aspirin
Caffeine
Charcoal
Carrots
Bamboo shoots
Salt
Sugar
Progesterone
Antibiotics
Dopamine
Phenylalanine
Taurine
Glycine/gelatin
Tyrosine
Cyproheptadine/ periactin
Tianeptine
Bromocriptine
Vit d
Calcium
Pregnenolone 30-50mg a day
Phenibut
BCAA's
Ondansetron/ zofran
Lysine
Ginger
LSD
Niacinamide
Benadryl
Agmatine
Co2
Methylene Blue
Adequate protein
Acetazolamide
DMT
L-theanine
Black tea
Psilocybin mushrooms
Lisuride
Zinc
Medium and short chain fatty acids
Can increase serotonin;
Hypothyroidism
PUFAs
Starches and fibres
Too much b6
Wheat based foods
Anything that irritates bowels
Sunburn
Long term starvation
Endotoxin/ inflammation of intestine
Bananas, tomatoes, pineapple
Light deficiency
High Tryptophan
Low testosterone
High Nitric Oxide levels
Elevated cortisol
Protein deficiency
Too much water
MDMA
Whey protein
Estrogen
Signs of high serotonin;
Loose bowels
Autism
IBS
Lots of sweating
Anxiety
Nauseousness
Insomnia
Teeth grinding
Reduced appetite for salt
Asthma
Anorexia
Depression
High blood pressure
Irritability
Aggression