Eating Disorders and the Physical Signs

Recognising the Physical Signs of Eating Disorders

Eating disorders often develop quietly. People who are struggling tend to hide their thoughts and behaviours, sometimes for months or years. By the time physical signs become visible, the condition has usually progressed to a point where health is already being affected.

Spotting these signs early matters. Early intervention can improve recovery outcomes. This guide covers the main physical changes that may indicate an eating disorder is present.

Physical Signs of Anorexia

Anorexia involves severe restriction of food intake, and the body responds in ways similar to starvation. The physical effects can be widespread and serious.

Weight loss is often the most obvious sign. A person with anorexia may lose a significant amount of weight, typically falling well below what would be expected for their height and age. However, not everyone with anorexia appears extremely thin, particularly in the early stages.

Other common physical signs include:

  • Dry, flaky skin and brittle nails
  • Hair that becomes thin, dull or falls out
  • Growth of fine, downy hair on the face and body, known as lanugo, which is more common in individuals with severe weight loss
  • Feeling cold most of the time, even in warm environments
  • Bruising easily due to vitamin deficiencies
  • Loss of muscle mass and reduced physical strength
  • Joint pain and aching bones
  • In women, periods may stop or become irregular

Over time, anorexia can lead to osteoporosis, making bones fragile and more likely to break. Heart problems, kidney damage and other organ complications may also develop if the condition continues untreated.

Physical Signs of Bulimia

Bulimia involves cycles of binge eating followed by purging, which may include vomiting, using laxatives or exercising excessively. The physical signs can be less obvious than those of anorexia because weight may stay relatively stable.

Repeated vomiting causes particular damage. Stomach acid erodes tooth enamel, leading to sensitivity, discolouration, cavities and gum disease. The salivary glands may swell, giving a puffy appearance to the face and jaw.

Other signs to look out for:

  • Calluses or scarring on the knuckles from inducing vomiting
  • Bloodshot eyes or broken blood vessels in the face
  • Frequent sore throats
  • Digestive problems including bloating, constipation and acid reflux
  • Fatigue and dizziness from electrolyte imbalances
  • Arrhythmia, an irregular heartbeat caused by electrolyte imbalances from purging

Laxative misuse can cause long term bowel problems and dehydration. The strain on the heart from repeated purging is a serious concern that requires medical attention.

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Physical Signs of Binge Eating Disorder

Binge Eating Disorder involves eating large amounts of food in a short period, often accompanied by feelings of loss of control. Unlike bulimia, there is no regular purging behaviour.

Physical signs include:

  • Weight fluctuations or gradual weight gain
  • Gastrointestinal discomfort, bloating and cramping
  • Fatigue and lethargy
  • Difficulty sleeping

These signs can sometimes be dismissed or attributed to other health issues, which is why seeking specialist advice is important when symptoms persist.

When to Seek Help

If you notice these physical signs in yourself or someone else, seeking advice sooner rather than later is worthwhile. Eating disorders are treatable conditions, and early intervention can lead to better health outcomes.

A good starting point is speaking to a GP, who can assess physical health and make referrals to specialist eating disorder services. In England, you can also contact your local NHS eating disorder service directly without a GP referral in some areas.

Beat, the UK's eating disorder charity, offers helplines and online support for anyone affected. Their services are free and confidential. The NHS website provides information on local services and what to expect from treatment.

Physical signs of an eating disorder indicate that the body is under strain. They should not be dismissed or waited out. If you are worried about yourself or someone close to you, reaching out is a crucial first step. Support is available, and recovery from eating disorders is possible with the right help.