Serotonin and anxiety?!?!

So I just learned about serotonin and honestly have never heard of it before but apparently if your lacking serotonin it causes anxiety and depression and all these symptoms that I have and most of you have! Please let me know if anyone was told anything about this!

Anxiety in typically low stress situations

Impatience without explanation

Fatigue when you should feel rested and energized

Cognitive impairment (inability to focus, poor memory, lack of mental clarity)

Negative thoughts with no apparent cause

Agitation

Mania/obsession

Mood swings

Strong sugar cravings

Indifference to situations you typically would care deeply about

Excessive worrying

Inability to fall and stay asleep

Moderate to overwhelming sadness

Feeling worse and agitated during bad/dark weather

Hello emily,

Serotonin deficiency is generally not the only factor in the development of anxiety disorders, though some people do have a genetic predisposition to low serotonin levels. Serotonin is a neurotransmitter that is known to improve mood and positive feelings. It also has an effect in others areas of the body, such as the gut, which is why those with anxiety and depression often have digestion issues.Serotonin deficiency's primary symptoms are the same symptoms as anxiety and depression, since the they tend to be related. Remember, it's not always clear which came first. Studies have conclusively shown that some people are more prone to serotonin deficiency. Studies have also conclusively shown that low serotonin can also be genetic. Symptoms often include:Generalized anxiety.Negative thoughts.Poor memory and focus.Muscle pain.Agitation, especially at night or in cloudy weather.There are a host of different symptoms of serotonin deficiency, many of which are related to anxiety. Once again, it's rarely clear whether serotonin deficiency causes anxiety or vice versa - it's even possible for them to cause each other, because they create an anxiety that is self-sustaining.

Yes I understand as that is mostly everything k listed.... I was just asking basically if anyone was diagnosed with low serotonin and it has led to

Anxiety and all these symptoms

There is so much confusion  around serotonin and too many cinflicting articles to know whats what. 

They cant actually tests anyone for it, it based off theories and symproms based on theories. And some run in reverse which makes it all confussing.

Serotonin levels affect mood. They r a neurotransmitter in the brain right? And taking anti-depressants aims to restore these levels. Exercise naturally promotes serotonin and so do some foods but you probably won't see the benefits straight away so keep at it but don't overdo it.

I learnt all this from internet or the info inside the pack. I've been taking anti-depressants for about 20 years now on and off.

Sorry if you already know this. I wasn't diagnosed with low serotonin. I don't know if there's a test to check these levels. I was surprised to learn that agitation can occur in cloudy weather. What's the science behind this I wonder.

I have the opposite funnily enough. When it's sunny I can get anxious which I find weird as normally u'd associate this with happy mood. Haven't quite been able to work that out although I have a theory about my childhood relating days out with my mum/dad with sunny weather. I was scared of my dad but that's for another time.