--- title: SAD Causes | Push Doctor description: Our online doctors can discuss the causes of Seasonal Affective Disorder (SAD) with you and find out why you may be experiencing it. image: https://www.pushdoctor.co.uk/hubfs/PDR_Global_6_logo_images/PD%20Logo.png --- ![Providing NHS services logo](https://www.pushdoctor.co.uk/hubfs/Providing-NHS-Services.png) ** PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes PP 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/what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad ![Dr Dan Bunstone](https://www.pushdoctor.co.uk/hubfs/db%20blue.png) Medically reviewed by: ### Dr Dan Bunstone - Medical Officer ** Updated: **Aug 18, 2021** ** Next review: **Aug 18, 2022** CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB 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/what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes BBB /what-we-treat/mental-health/seasonal-affective-disorder-sad/causes CCC what-we-treat CCC mental-health CCC seasonal-affective-disorder-sad CCC causes ** ** ## What causes Seasonal Affective Disorder (SAD)? SAD is a type of depression, but the exact causes of it remain largely unknown. It typically begins and ends at the same time each year and so there are certain factors that are believed to play a part. While the causes of SAD of not fully understood, it is known that a higher percentage of females suffer from it compared to men. There could also be links to family history and a greater number of cases in people who have another form of [depression](https://www.pushdoctor.co.uk/what-we-treat/mental-health/depression) or a bipolar disorder. ** ** ## Circadian rhythm The reduced levels of sunlight during autumn and winter may disrupt your biological clock, known as your circadian rhythm. Less sunlight during the daytime means that less light hits the back of the eye. When light hits the back of the eye, messages are sent to the parts of the brain that controls appetite, sleep, mood, activity and sex drive, so if you are not getting enough light, it could cause adverse effects, such as SAD. As the condition only affects some people and not others, it seems that some people may need more light than others, in order to keep their biological clock in order. ** ** ## Low serotonin levels The brain chemical (neurotransmitter) serotonin is known to affect your mood, sleep and appetite, so a drop in serotonin levels in your body due to a lack of sunlight may be one of the causes of SAD. ** ** ## High melatonin levels When it is dark, the body creates melatonin, and this helps us sleep. People with SAD may produce more melatonin than others, contributing to SAD. ** ** ## Reverse Seasonal Affective Disorder The onset of autumn and winter usually triggers SAD, but it may also be triggered by the opposite seasons. In these rarer cases, Reverse Seasonal Affective Disorder, or summer depression, results in depression during spring and summer. Article Resources Share - MIND, Understanding Seasonal Affective Disorder (SAD), 2016. [mind.org.uk/media/4694765/understanding-sad-2016-pdf.pdf](https://www.mind.org.uk/media/4694765/understanding-sad-2016-pdf.pdf) - E, Roth & Legg, T. Healthline, Seasonal Affective Disorder (Major Depressive Disorder with Seasonal Pattern), 08/11/2017. [healthline.com/health/seasonal-affective-disorder](https://www.healthline.com/health/seasonal-affective-disorder) - NHS Inform Scotland, Seasonal affective disorder (SAD): Causes, 20/02/2018. [nhsinform.scot/illnesses-and-conditions/mental-health/seasonal-affective-disorder-sad#causes](https://www.nhsinform.scot/illnesses-and-conditions/mental-health/seasonal-affective-disorder-sad#causes) - Mayo clinic, Seasonal affective disorder (SAD): Symptoms & Causes, 25/10/2017 [mayoclinic.org/diseases-conditions/seasonal-affective-disorder/symptoms-causes/syc-20364651](https://www.mayoclinic.org/diseases-conditions/seasonal-affective-disorder/symptoms-causes/syc-20364651) - Nordqvist, C. Medical News Today, Seasonal affective disorder (SAD): What is it?, 24/07/2017. [medicalnewstoday.com/articles/10306.php](https://www.medicalnewstoday.com/articles/10306.php) ### Mental Health Articles ### **NHS - trained and registered doctors Every one of our doctors is registered with the General Medical Council and can be found on the NHS National Performers List, so you know you are only ever receiving the best possible care and advice. They are experienced in treating a wide range of conditions, and can help with almost everything your regular GP could in a physical surgery. You can meet some of our doctors [here](https://www.pushdoctor.co.uk/meet-our-doctors). Push Doctor also has an in-house Medical team, who support our doctors day in, day out, and enable our doctors to do what they do best. They are also responsible for the ongoing training and development of doctors on our platform. ** ### **CQC regulated The [Care Quality Commission (CQC)](https://www.cqc.org.uk/) is the independent regulator of health and social care in England. They are the foremost authority in our industry, assessing health providers' ability to provide people with safe, effective, compassionate and high-quality care – be they offline or online doctors. Push Doctor is registered with the CQC under the name 'Push Dr Limited', with the registration number [1-5345986073](https://www.cqc.org.uk/location/1-5345986073). Our most recent inspection took place in May 2019, concluding that the service we provide is safe, effective, caring, responsive and well-led – gaining a 'Good' rating overall. You can read the report in full on [our CQC profile](https://www.cqc.org.uk/location/1-5345986073). ** ### **Same day prescriptions Our NHS-trained GPs can, if appropriate, issue prescriptions online following a consultation. Once your consultation is complete, our team will search for the closest pharmacy to you which has your medication available. We'll then send you a text when your prescription is ready to collect. To collect your medication, simply hear to the nominated pharmacy to collect and pay for your prescription. You will need to take a valid form of ID to show the pharmacist when you arrive. This process is almost always done within the same day of your consultation. ** ### **Instant fit (sick) notes Our GPs can send a sick/fit note directly to you if necessary following an online consultation. These can be sent directly by email or first-class post. Fit notes include recommendations about how and when you'll be able to return to work or education, or whether you're able to return to work with amended duties (e.g no heavy lifting or reduced hours). They can also contain detailed advice about managing your medical issue in the workplace. ** ```json { "@context" : "http://schema.org", "@type" : "WebPage", "description" : "Our online doctors can discuss the causes of Seasonal Affective Disorder (SAD) with you and find out why you may be experiencing it. ", "name" : "SAD Causes | Push Doctor", "publisher" : { "@type" : "Corporation", "name" : "Push Doctor" } } ```