Re: Depression
Depressed patients show evidence of both proinflammatory changes and neurophysiological abnormalities such as increased amygdala reactivity and volumetric decreases of the hippocampus and ventromedial prefrontal cortex
There are lots of different ways you can create the PROINFLAMMATORY changes that change the way your brain interprets your relationship with others and changes the way you relate to the world.
Junk food high in sugars and industrially made pro-inflammatory omega 6 seed/grain oils (Corn, soya, sunflower, etc) certainly are pro-inflammatory and cause weight gain and lethargy that increases the size and number of fat cells which themselves promote further inflammation.
But stress of any kind produces the same pro inflammatory stress from cortisol.
It's also worth knowing that environmental pollution has a similar impact which is one of the reasons why living in a heavy polluted city is associated with a higher incidence of obesity.
Humans evolved with the ability to create the ANTI-INFLAMMATORY agents Vitamin D3 (from dawn to dusk) and MELATONIN (from dusk to dawn)
It helps us cope better with inflammation if we correct deficiency status in both these. You can now get a 25(OH)D test from Birmingham NHS path lab CityAssays for £25 (less if you bulk buy and share with friends) and getting your 25(OH)D up to around 125nmol/l is a smart idea as at that level it is MOST EFFECTIVE at resolving inflammation.
Here are a couple of links to ways to improve natural melatonin secretion.
17 Ways to Improve Your Sleep Hygiene Tonight - Mercola
f.lux: software to make your life better
Unfortunately it's not quite as simple a just correcting Vit D3 and melatonin levels though I'm sure most people would agree that getting outside into bright summer sunshine , getting sufficient exercise followed by a good nights sleep is a good start to feeling less depressed.
However modern foods are very different from those that were available when I was a child and we should be aware of the fact that most contain LESS MAGNESIUM and LESS OMEGA 3 now.
Both magnesium and Omega 3 improve our ability to resolve inflammation directly but they also both also help Vitamin D3 improve it's ability to regulate inflammation. That means the switching on/off of the inflammatory response.
If your house is burning down you'd be pretty annoyed if the fire services turned up with only 20-30% of the resources required to deal with the inflammation on your property. You'd also be cross if they didn't come soon enough and even crosser if when they had put out the fire they continued to apply water to the point where unnecessary damage was being done and they wouldn't stop?
Almost all of us have too little vitamin D, melatonin, magnesium, omega 3 so our ability to resolve inflammation is compromised and our anti inflammatory response is either inadequate or badly regulated. Hence the reason many people suffer unnecessary chronic pain and depressive conditions.
It's not surprising many of the anti-depressant medications are also used to treat people with chronic pain as they work as anti-inflammatory agents.