Exhortation to develop those good habits in the good times, I suppose.
> For the 57 trials (2189 participants) comparing exercise with no treatment or a control intervention, the pooled SMD for depressive symptoms at the end of treatment was −0.67 (95% confidence interval (CI) −0.82 to −0.52; low‐certainty evidence), showing that exercise may result in a reduction in depressive symptoms. When we included only the seven trials (447 participants) with adequate allocation concealment, intention‐to‐treat analysis and blinded outcome assessment, the pooled SMD was smaller (SMD −0.46, 95% CI −0.88 to −0.04). Pooled data from the nine trials (405 participants) with long‐term follow‐up provided very uncertain evidence about the effect of exercise on depressive symptoms (SMD −0.53, 95% CI −1.11 to 0.06; very low certainty evidence).
Like, what does -0.67 really mean in this context. I read the study and it is not really explained. Maybe I'm too dumb to get it, though.
That being said, I do believe that exercising, eating right, maintaining a healthy sleep schedule, etc., all the boring lifestyle things have been key to preventing myself from slipping back into that depressed state, years after stopping medication.
One of the most frustrating things when your really low is people giving advice like do exercise to feel better - please don’t do this.
If therapy for depression were a pill, I'm not sure it'd demonstrate enough efficacy to get approved.
What incentive do they have to give you immediate and durable results? Why do most only take cash?
I did some ML work with an addiction psychiatrist at the peak of the opioid crisis. He said,”To pay my bills, I have to treat rich people.”
I find taking long walks and speaking candidly about how I’m feeling is always the most effective way to deal with tough emotions.
What got me out of that place was improv comedy lessons. Highly recommend to anyone. Improv schools and theatres should be as ubiquitous as gyms.
Exercise has always been a mental drain for me. A day when I go to the gym is a day when I give up mental capacity that could have been used for something else. I'll be less effective at work and less organized at home. It's like my IQ's dropped by double digits.
I drink enough water and electrolytes, in case anybody's wondering.
A waste product of exercise is Adenosine. Adenosine build-up leads to increased sleep pressure, and improved Neural Function of Sleep, not just "being unconscious".
This is where things get a bit interesting when we look at depression. For many people, depression results in decreased Neural Function of Sleep (specifically slow-wave activity) even though sleep time often increases.
However there is also some evidence that restricting slow-wave activity can act as a "reset" button. The researchers I have spoken to about this are either in the "too dangerous to do the research" camp, or "distrupting slow-waves for a very short period, then increase slow-wave activity".
Of course, sleep and exercise would only be a single pathway to improving depression outcomes. Exercise alone, and the dopamine, oxygenation, and many other outcomes are also likely to come into play.
Comparing this to pharmaceutical or behavioural therapies, I can see why they'd be as effective. You're treating the entire system, not just trying to change a single chemical in the brain, specifically when we aren't even measuring the chemical before or after treatment.
Found out that there's some research on this: https://www.biotechniques.com/biochemistry/exercise-lactate-...
I don't think this works for all type of depression though.
It's unhelpful because I got tired, and then I stopped workout entirely
Now I just do fast walking and it's nice
That since for 100,000 years humans were roaming the landscape gathering or hunting, and for 10,000 years engaged in heavy agricultural work, is the modern day rise in depression not just correlated but caused by the modern day reduction in daily heavy exercise?
It’s such an obvious idea I am wondering if folks know of any research / studies on it?
I highly recommend the audiobook as it is read by him and he is very enthusiastic about his research.
The one quote I remember from the book is that he stopped prescribing Prozac and started prescribing treadmills...
Some people don’t suffer from chemical imbalances, unhealthy habits ruining their mood, or whatever your snake oil will magically cure. There’s a term called Shit Life Syndrome and some people just have that as their long term situation.
Standardized effect sizes like the ones reported here have no clinical meaning, they are purely statistical. To measure if these kinds of changes matter, you need to determine the Minimal (Clinically) Important Difference [1-2]. I.e. can clinicians (or patients) even notice the observed statistical difference.
In practice, this is a change of about 3-5 points on most 20+ item rating scales, or a relative reduction of 20-30% of the total (sum) score of the scale [1-2]. Unfortunately, anti-depressants are under or just barely reach this threshold [3-4], and so should be widely to be considered ineffective or only borderline effective, on average. Of course this is complicated by the fact that some people get worse on these treatments, and some people experience dramatic improvements, but, still, the point is, depression is extremely hard to treat.
EDIT: There is less data on MCIDs for therapy, but at least one review suggests therapy effects can be in the 10+ point range [5]. But the way the exercise study is presented, with a standardized effect size, we can have no idea if the results matter at all [6].
[1] Button, et al. (2015). Minimal clinically important difference on the Beck Depression Inventory - II according to the patient’s perspective. Psychological Medicine, 45(15), 3269–3279. https://doi.org/10.1017/S0033291715001270 [https://www.cambridge.org/core/journals/psychological-medici...]
[2] Masson, S. C., & Tejani, A. M. (2013). Minimum clinically important differences identified for commonly used depression rating scales. Journal of clinical epidemiology, 66(7), 805-807. [https://www.jclinepi.com/article/S0895-4356(13)00056-5/fullt...]
[3] Hengartner, M. P., & Plöderl, M. (2022). Estimates of the minimal important difference to evaluate the clinical significance of antidepressants in the acute treatment of moderate-to-severe depression. BMJ Evidence-Based Medicine, 27(2), 69-73. https://doi.org/10.1136/bmjebm-2020-111600 [https://ebm.bmj.com/content/27/2/69.abstract]
[4] Jakobsen, J. C., Gluud, C., & Kirsch, I. (2020). Should antidepressants be used for major depressive disorder?. BMJ evidence-based medicine, 25(4), 130-130. https://doi.org/10.1136/bmjebm-2019-111238 [https://ebm.bmj.com/content/25/4/130.abstract]
[5] Cuijpers, P., Karyotaki, E., Weitz, E., Andersson, G., Hollon, S. D., & van Straten, A. (2014). The effects of psychotherapies for major depression in adults on remission, recovery and improvement: a meta-analysis. Journal of affective disorders, 159, 118–126. https://doi.org/10.1016/j.jad.2014.02.026 [https://pubmed.ncbi.nlm.nih.gov/24679399/]
[6] Pogrow, S. (2019). How Effect Size (Practical Significance) Misleads Clinical Practice: The Case for Switching to Practical Benefit to Assess Applied Research Findings. The American Statistician, 73(sup1), 223–234. https://doi.org/10.1080/00031305.2018.1549101
Even an amateur could read the headline and instantly understand this critical point the experiment's design, and yet it's not even acknowledged under the "Risk of bias" section.
[0] https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD...
Exercise improves the biological health of the brain which can be fixing the underlying condition.
If you are depressed because your brain is biologically unhealthy, therapy isn’t going to do anything
2024 has been a rough year. I didn’t begin any real recover until around march-may 2025… when i started going yo the gym and lifting weights. Yeah sure i’m doing therapy and all that jazz but the real improvements started with weight lifting.