Major depressive disorder: hypothesis, mechanism, prevention and treatment
How Does Humor Affect Mental Health?
Whether it's giggling at something someone said or laughing out loud at a comedy show, a good laugh is healthy for you. Numerous medical studies agree that laughter is a natural mental health remedy and the ultimate stress relief medicine.
Having a good sense of humor has numerous long-term and short-term mental health benefits.
Short-term mental health benefits of humor. Laughing automatically triggers positive physical and mental changes that help to relax your mind. The short-term benefits of laughter include:
Long-term benefits of humor on mental health. In addition to the short-term benefits, humor has several scientifically proven long-term effects. Some of them include:
If you are a naturally cheerful person, you may be less prone to depression and anxiety. This, however, doesn't mean happy people are not vulnerable to mental health issues. Life can be overwhelming at times. Even the strongest people break. A good sense of humor is a natural way to keep your stress levels in check. The following tips will help you develop it:
Depression News
Apr. 3, 2025 — In a new extensive systematic review, researchers identified 17 modifiable risk factors that are shared by stroke, dementia, and late-life depression. Modifying any one of them can reduce your risk ...
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Mar. 21, 2025 — Almost half of patients diagnosed with depression classify as being 'treatment-resistant' as new research suggests that many don't respond to multiple antidepressant ...
Mar. 19, 2025 — Mindfulness, total sleep quality, and alcohol consumption may help explain why people who stay up late have a greater risk of depression, according to a new ...
Mar. 18, 2025 — Research has tracked depressive symptoms in 7100 young people from Tokyo and London and shown girls have more depressive symptoms than boys in both cities. The study found that this gap is around ...
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Mar. 13, 2025 — New research shows that people with eating disorders are more harshly judged than those suffering from depression, making it much harder for them to seek ...
Mar. 10, 2025 — A novel analysis of more than 375 published studies concluded that the association between chronic pain and rates of depression and anxiety is staggering. The study found that 40% of adults with ...
Mar. 6, 2025 — Individuals with generalized anxiety disorder (GAD), a condition characterized by daily excessive worry lasting at least six months, have a high relapse rate even after receiving treatment. ...
Mar. 5, 2025 — Group arts interventions, such as painting, dance, or music, significantly reduce symptoms of depression and anxiety in older adults, offering a powerful alternative to traditional treatments. The ...
Feb. 27, 2025 — When faced with chronic stress, why do some people develop anxiety and depressive symptoms while others show resilience? A protein that acts as a cannabinoid receptor and is present in the structure ...
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Feb. 25, 2025 — New research suggests that certain antidepressants can accelerate cognitive decline in people with dementia. At the same time, some drugs appear to be less harmful than others, which can help doctors ...
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Feb. 19, 2025 — A new study of more than 1400 adults who gamble and play online video games has found loot box buying is associated with real-world gambling, video gaming addiction, and other mental health issues. ...
Feb. 13, 2025 — A new study led by researchers at UF Health has uncovered why males and females may experience stress ...
Feb. 13, 2025 — College students who spent a little bit of free time each week interacting with therapy dogs on campus during their first semester experienced fewer signs of stress and depression than those who did ...
New Study Links Chronic Pain And Depression Through Inflammation
Chronic pain—defined as pain that lasts for three months or more—is not only physically exhausting but also closely connected to mental health issues like depression.
A growing body of research shows that people with chronic pain are up to four times more likely to experience depression. Now, new research from Yale University adds an important piece to this puzzle: inflammation in the body may be a key reason why pain and depression are so closely linked.
The study, published in Science Advances, examined health data from the UK Biobank, one of the world's largest medical databases. It includes information from over 400,000 people collected over 14 years.
Participants reported where in the body they felt pain (such as in the back, neck, head, or joints), how long it lasted, and whether it interfered with their daily lives. They also answered questions about their mental health and whether they had been diagnosed with depression.
The researchers found that people who experienced pain in more than one part of the body were more likely to suffer from depression. In fact, the risk of depression increased as the number of painful body sites increased. The link was stronger for those with chronic pain than for those whose pain lasted only a short time.
But the study went even further. Blood samples from participants were analyzed for signs of inflammation—specifically, for proteins and cells that the body produces when it is fighting off infection or injury. One marker, called C-reactive protein (CRP), stood out. This protein is made in the liver and increases in the bloodstream when the body is inflamed.
The researchers found that people with higher levels of CRP were more likely to experience both pain and depression. This suggests that inflammation may be a shared biological cause of both conditions.
"This gives us some preliminary evidence about the inflammatory mechanisms underlying the association between pain and depression," said Dr. Rongtao Jiang, the study's first author and a postdoctoral researcher at Yale School of Medicine.
According to senior author Dr. Dustin Scheinost, an associate professor at Yale, the findings highlight how deeply connected our physical and mental health are. "Pain isn't only physical," he said. "Our study adds to the evidence that physical conditions can have mental health consequences."
This research challenges the old view that treats mental health as completely separate from other areas of health, such as the heart, liver, or immune system. Instead, it supports the idea of a brain-body connection, where inflammation in one part of the body can affect how the brain works, and vice versa.
This insight may lead to new treatment strategies. If inflammation plays a central role in both chronic pain and depression, then targeting inflammation might help ease both problems at once.
Currently, depression is mostly treated with therapy and medications that affect brain chemicals. But for people whose depression is linked to physical pain, anti-inflammatory approaches may one day offer relief.
The study also found that even short-term (acute) pain was connected to depression, although not as strongly as chronic pain. This reinforces the idea that any kind of ongoing discomfort—especially in multiple places—can take a toll on mental well-being.
While these findings are promising, the researchers noted that most of the people in the study were of European ancestry. Future research will need to look at whether these results hold true in more diverse populations.
The team is also planning to explore the connection between chronic pain and opioid use disorder, a serious problem that often develops when people try to manage long-term pain.
In summary, this study helps explain why so many people with chronic pain also struggle with depression. It shows that inflammation—measured through markers like CRP—might be the common link. These insights could eventually lead to better, more personalized treatments for millions of people living with chronic pain and its emotional toll.
If you care about pain, please read studies about how to manage gout with a low-purine diet, and a guide to eating right for arthritis.
For more health information, please see recent studies about the link between processed foods and chronic diseases, and avoid these 8 foods to ease arthritis pain.
The research findings can be found in Science Advances.
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