What are the short and long-term effects of eating disorders?
Medically reviewed by Paul Hornsey
Key Insights
1.
Prevalence is rising
Over 6% of the UK population struggles with an eating disorder, with women disproportionately affected.
2.
The three most common eating disorders are:
- Anorexia nervosa – marked by extreme food restriction and fear of weight gain
- Bulimia nervosa – defined by cycles of binge eating and purging
- Binge Eating Disorder (BED) – recurrent overeating without compensatory behaviours
3.
Short-term effects
include malnutrition, emotional instability, digestive issues, and dangerous fluctuations in weight.
4.
Long-term effects
can be severe and irreversible, such as heart disease, osteoporosis, organ damage, infertility, and chronic mental health challenges.
5.
Eating disorders affect every aspect of life
physical health, emotional wellbeing, relationships, and professional stability.
6.
Early intervention and whole-person care
are critical for recovery, combining medical support, nutritional therapy, and evidence-based psychological treatment.
6.
With tailored support
individuals can rebuild physical health, emotional resilience, and self-worth, achieving lasting recovery.
Understanding Eating Disorders
Eating disorders, such as anorexia nervosa, bulimia nervosa, and binge eating disorder, impact millions of people worldwide. In the UK alone – where over 6% of the population is struggling with an eating disorder1 – the prevalence continues to rise, with many individuals facing profound consequences on their physical and emotional wellbeing.
These complex conditions not only affect body weight but also disrupt the intricate balance between mind and body2, creating the conditions for far-reaching and potentially destructive effects.
In the short term, eating disorders can result in:
However, the long-term effects are even more concerning, often manifesting in chronic health issues, cognitive impairment3, and severe mental health challenges. Despite their complexity, the consequences of eating disorders can be mitigated with early intervention, clinically guided treatment, and whole-person care that addresses the root causes.
This blog post explores the full scope of the short and long-term effects, offering insight into how eating disorders reshape lives – and how recovery can lead to lasting wellness.
Make a referral for someone struggling with an eating disorder today →
Living with an eating disorder
Living with an eating disorder is a daily struggle that goes much deeper than food and weight; in fact, it affects virtually every aspect of a person’s life. Shockingly, in the UK, eating disorders have the highest mortality rates among all psychiatric disorders4, with approximately 75% of all cases faced by women4.
This affects not only the individual, but also their loved ones, as families and friends also navigate the complex emotional, physical, and psychological challenges that come with these conditions.
A. A. Gilbert5
“The family’s emotional involvement, as well as such changes in routine involving appointments with therapists and support groups, all cause disruption to normal patterns and to family relationships […] qualitative anecdotes describe the tremendous strains and changes in patterns within families particularly during the initial period of diagnosis.”
Eating disorders can leave individuals isolated, with low self-esteem, heightened anxiety, and a distorted relationship with their bodies6. The impact extends to social and professional spheres, with many experiencing strained relationships, career setbacks, and long-term health risks.
For those living with eating disorders, daily life can become an exhausting cycle of restrictive behaviours, guilt, and shame.
Anorexia nervosa
Anorexia nervosa is a complex eating disorder marked by an overwhelming fear of weight gain, leading to extreme food restriction and distorted body perception7. Individuals with anorexia often view themselves as overweight, even when they are dangerously underweight.
This obsession with controlling food intake becomes a way to cope with emotional stress, anxiety, or trauma. Clinically, anorexia affects multiple body systems8 and requires an integrated treatment approach.
People living with anorexia often go to great lengths to hide their behaviours, including skipping meals, avoiding social gatherings involving food, or claiming they have already eaten. Over time, the severe lack of nourishment affects both the body and mind – resulting in profound physical, psychological, and social consequences.
Common symptoms and warning signs include:
Effects of Anorexia Nervosa
Short-term Effects
Potential Long-term Effects
Extreme weight loss and malnutrition
Osteoporosis, as the body leaches calcium from bones due to malnutrition
Low blood pressure and reduced heart rate, increasing the risk of heart failure
Muscle loss and weakness, impairing basic functioning
Dizziness, fainting, and chronic fatigue
Fertility problems, including amenorrhea (loss of menstruation) in women, due to hormonal imbalances
Dry skin, hair thinning, and brittle nails due to nutrient deficiencies
Severe heart damage, including heart failure and bradycardia (slow heart rate)
Abdominal pain and constipation from slowed digestion
Permanent damage to internal organs, such as the liver and kidneys, due to prolonged starvation
Long-lasting psychological effects, including chronic anxiety, depression, and a distorted relationship with food and body image
Bulimia nervosa
Bulimia nervosa is clinically defined by a cycle of binge eating followed by compensatory behaviours such as vomiting, excessive exercise, or misuse of laxatives14. This cycle is driven by feelings of loss of control during binge episodes, followed by guilt, shame, and a need to “undo” the effects of overeating.
Unlike anorexia, individuals with bulimia may maintain a normal or slightly above-average weight, making the disorder harder to detect. The psychological toll, combined with dangerous physical habits, leads to significant health risks.
Individuals with bulimia often experience frequent and overwhelming cravings, resulting in secretive binge eating sessions. This is typically followed by purging, which provides temporary relief but reinforces the destructive cycle. Clinically, bulimia poses immediate dangers to the gastrointestinal system, heart, and emotional health15.
Common symptoms and warning signs include:
Effects of Bulimia Nervosa
Short-term Effects
Potential Long-term Effects
Dehydration and electrolyte imbalances, leading to muscle weakness and irregular heartbeat
Severe gastrointestinal problems, including chronic acid reflux, stomach ulcers, and potential rupture of the oesophagus or stomach
Inflammation, rupture, or damage to the oesophagus due to repeated vomiting
Cardiac complications due to electrolyte imbalances, increasing the risk of heart arrhythmias or sudden cardiac arrest
Severe dental erosion and gum disease from stomach acid
Long-lasting dental issues, including tooth decay, gum disease, and tooth loss
Digestive issues such as bloating, constipation, and acid reflux
Hormonal disruptions, including irregular menstrual cycles or infertility in women
Frequent mood swings, anxiety, and feelings of shame or worthlessness
Long-term psychological effects, such as chronic depression, anxiety, and a distorted sense of self-worth
Increased risk of substance abuse or self-harm as a coping mechanism
Binge eating disorder
Binge eating disorder (BED) is the most common eating disorder in both the UK and the USA20, and is characterised by recurrent episodes of consuming large quantities of food, often in a short period, accompanied by feelings of guilt, shame, or distress21. Unlike bulimia, there are no compensatory behaviours like purging. BED is associated with emotional distress, a lack of control, and a sense of helplessness during binge episodes, often leading to weight gain and long-term health consequences.
Individuals with BED may use food as a way to cope with difficult emotions, stress, or trauma, but the temporary relief is followed by intense feelings of guilt and regret. Binge eating is often done in secret, and those affected may avoid social situations due to embarrassment about their eating habits or body image.
Common symptoms and warning signs include:
Effects of Binge Eating Disorder
Short-term Effects
Potential Long-term Effects
Weight gain and fluctuations
Obesity and related complications, including Type 2 diabetes, high blood pressure, and heart disease
Digestive discomfort, including bloating, indigestion, and constipation
Joint pain and reduced mobility due to weight gain
Feelings of shame, guilt, and loss of control
Increased risk of chronic emotional disorders, including depression, anxiety, and low self-esteem
Increased risk of depression and anxiety, often linked to body image
Social isolation and difficulties maintaining relationships due to shame or embarrassment
Sleep disturbances due to overeating at night
Elevated risk of developing other eating disorders or engaging in self-destructive behaviours such as substance abuse
Potential for chronic digestive issues such as irritable bowel syndrome (IBS) or acid reflux
Generalised short and long-term effects of eating disorders
Eating disorders, regardless of specific type, exert profound and wide-ranging effects on both physical and mental health. These disorders disrupt essential bodily functions, strain mental health, and impact relationships, often creating a cycle of worsening health and increasing isolation.
Clinically, the sooner an eating disorder is addressed, the more effectively these impacts can be mitigated. Here’s an overview of the generalised short and long-term effects on individuals:
Short-term effects:
Long-term effects:
The general impacts of eating disorders are profound and can last a lifetime without appropriately curated intervention. By addressing these disorders with comprehensive, clinically guided care, individuals have a chance to rebuild physical health, emotional resilience, and a balanced approach to life and relationships.
The path to recovery from an eating disorder
Recovering from an eating disorder is a journey that requires an integrative, whole-person approach to truly heal the body, mind, spirit, and emotional health. Clinically guided, curated treatment addresses not only the physical aspects of the disorder but also the underlying psychological and emotional triggers, leading to long-lasting and sustainable recovery.
Whole-person care combines nutritional counselling, medical support, and therapeutic intervention such as cognitive behavioural therapy (CBT) or dialectical behaviour therapy (DBT) to create a personalised pathway for each individual. This approach also includes mindfulness practices and emotional support networks, which foster self-compassion, resilience, and personal growth.
Long-term recovery is attainable when individuals feel empowered to reconnect with themselves in a supportive, non-judgemental environment; that’s why we’ve carefully put together serene, utterly discrete settings in the heart of the city, designed to allow for deep healing and transformation. Here, patients receive world-leading care that cultivates strength, balance, and a renewed perspective on health and self-worth.
For those struggling with an eating disorder, or healthcare professionals looking to support a patient, a curated recovery pathway can provide the enduring foundation for a life of restored wellbeing – make a referral now to start the journey.
