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Seasonal Affective Disorder (SAD)

Seasonal affective disorder (SAD) is a type of depression that comes and goes in a seasonal pattern.

SAD is sometimes known as "winter depression" because the symptoms are usually more apparent and more severe during the winter.

Symptoms include:

⭐️ Persistent low mood

⭐️ Loss of pleasure or interest in normal everyday activities

⭐️ Irritability

⭐️ Feelings of despair, guilt and worthlessness

⭐️ Feeling lethargic (lacking in energy) and sleepy during the day

⭐️ Sleeping for longer than normal and finding it hard to get up in the morning

⭐️ Craving carbohydrates and gaining weight

⭐️ Difficulty concentrating

⭐️ Decreased sex drive

For some people, these symptoms can be severe and have a significant impact on their day-to-day activities.

What causes SAD?

The exact cause of SAD is not fully understood, but it's often linked to reduced exposure to sunlight during the shorter autumn and winter days.

The main theory is that a lack of sunlight might stop a part of the brain called the hypothalamus working properly, which may affect the:

⭐️ Production of melatonin – melatonin is a hormone that makes you feel sleepy; in people with SAD, the body may produce it in higher than normal levels

⭐️ Production of serotonin – serotonin is a hormone that affects your mood, appetite and sleep; a lack of sunlight may lead to lower serotonin levels, which is linked to feelings of depression

⭐Body's internal clock (circadian rhythm) – your body uses sunlight to time various important functions, such as when you wake up, so lower light levels during the winter may disrupt your body clock and lead to symptoms of SAD

⭐️ Genetics

Treatments for SAD

A range of treatments are available for SAD. Star Freudenberg will recommend the most suitable treatment programme for you.

The main treatments are:

  • lifestyle measures – including getting as much natural sunlight as possible, exercising regularly and managing your stress levels

  • Lifestyle suggestions - based on your consultation certain lifestyle recommendations will be provided to support you back into better mental health

  • light therapy – where a special lamp called a light box is used to simulate exposure to sunlight

  • talking therapies – such as cognitive behavioural therapy (CBT) or counselling

  • IV Vitamin Drips and Injections - there is proven research linked to depressive symptoms with vitamin deficiency and this can be quickly remedied with treatments at the clinic

If you feel you have SAD and you're struggling to cope.

You can book an appointment at the clinic where we will carry out an assessment to check your mental health. They may ask you about your mood, lifestyle, eating habits and sleeping patterns, plus any seasonal changes in your thoughts and behaviour. Finally we will perform a blood test to see for key nutritional deficiencies.

Book in your free consultation here.


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