Health Advice
- Weight Management
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- First aid
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- Leukaemia, acute lymphoblastic
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- Addiction
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- Alcohol misuse
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- Alexander technique
- Rhinitis, allergic
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- Amniocentesis
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- Vitamin B12 or folate deficiency anaemia
- Anaesthesia
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- Arteriography
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- Dog bites
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- Antacid medicines
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- Hearing tests
- Bird flu
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- Skin rashes in babies
- Weaning
- Lumbago (low back pain)
- Septic arthritis
- Halitosis (bad breath)
- Weight loss surgery
- Barium enema
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- Bedbugs
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- Behçet’s disease
- Facial paralysis
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- Prostate enlargement
- Beta-blockers
- Bicarbonate test
- Binge eating
- Biopsy
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- Spider bite
- Eye, black
- Bladder cancer
- Cystitis
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- Blood donation
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- Blood groups
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- Vomiting blood
- Septicaemia
- Hypertension
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- Blood tests
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- Blushing
- Bromhidrosis (body odour)
- Bone cyst
- DXA scan
- Bone marrow donation
- Stem cell transplant
- Borderline personality disorder
- Bottle feeding
- Botulism
- Rectal cancer
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- Orthodontics
- Brain abscess
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- Brain tumour, benign (non-cancerous)
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- Brain tumours
- Breast abscess
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- Screening for breast cancer
- Nipple discharge
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- Smelly feet (bromodosis)
- Bronchitis
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- Burns and scalds
- Heart bypass
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- Food poisoning
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- Thrush, oral - adults
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- Carbon monoxide poisoning
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- Rib, cervical
- Smear test
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- Chest pain
- Herpes zoster virus
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- Cirrhosis
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- Pneumonia
- CT scan
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- Vegetative state
- Topical corticosteroids
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- Fluoride
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- Depression
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- Rectal examination
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- Epilepsy
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- Tendon repair, hand
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- Heat exhaustion and heatstroke
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- Hernia, femoral
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- Painkillers, ibuprofen
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- Vitamins, minerals and supplements
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- Warfarin
- Weight loss (unexpected and unplanned)
- Whiplash
- Wisdom tooth removal
- X-ray
- Yellow fever
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Read moreNHS Choices - Introduction
(18/06/2014)
A heart attack is a serious medical emergency in which the supply of blood to the heart is suddenly blocked, usually by a blood clot. Lack of blood to the heart can seriously damage the heart muscle.
A heart attack is known medically as a myocardial infarction or MI.
Symptoms can include:
- chest pain – the chest can feel like it is being pressed or squeezed by a heavy object, and pain can radiate from the chest to the jaw, neck, arms and back
- shortness of breath
- feeling weak and/or lightheaded
- overwhelming feeling of anxiety
It is important to stress that not everyone experiences severe chest pain; the pain can often be mild and mistaken for indigestion.
It is the combination of symptoms that is important in determining whether a person is having a heart attack, and not the severity of chest pain.
Read more about the symptoms of a heart attack.
Treating heart attacks
A heart attack is a medical emergency. Dial 999 and ask for an ambulance if you think you or someone you know is having a heart attack.
If the casualty is not allergic to aspirin and it’s easily available, give them a tablet (ideally 300mg) to slowly chew and then swallow while waiting for the ambulance to arrive.
The aspirin will help to thin the blood and reduce the risk of a heart attack.
Treatment for a heart attack will depend on how serious it is. Two main treatments are:
- using medication to dissolve blood clots
- surgery to help restore blood to the heart
Read more about treating heart attacks.
What causes a heart attack?
Coronary heart disease (CHD) is the leading cause of heart attacks. CHD is a condition in which coronary arteries (the major blood vessels that supply blood to the heart) get clogged up with deposits of cholesterol. These deposits are called plaques.
Before a heart attack, one of the plaques ruptures (bursts), causing a blood clot to develop at the site of the rupture. The clot may then block the supply of blood running through the coronary artery, triggering a heart attack.
Your risk of developing CHD is increased by:
- smoking
- a high-fat diet
- diabetes
- high cholesterol
- high blood pressure
- being overweight or obese
Read more about the causes of heart attacks.
Recovery
The time it takes to recover from a heart attack will depend on the amount of damage to the heart muscle. Some people are well enough to return to work after two weeks. Other people may take several months to recover. The recovery process aims to:
- reduce your risk of another heart attack through a combination of lifestyle changes, such as eating a healthy diet, and medications, such as statins (which help lower blood cholesterol levels)
- gradually restore your physical fitness so you can resume normal activities (known as cardiac rehabilitation)
Most people can return to work after having a heart attack, but how quickly will depend on your health, the state of your heart and the type of work you do.
Read more about recovering from a heart attack.
Who is affected
Heart attacks are one of the most common reasons why a person requires emergency medical treatment.
Men are more likely to have a heart attack than women. The British Heart Foundation estimates that around 50,000 men and 32,000 women have a heart attack each year in England.
Most heart attacks occur in people aged over 45.
Complications
Complications of heart attacks can be serious and possibly life-threatening. These include:
- arrhythmia – this is an abnormal heartbeat, where the heart begins beating faster and faster, then stops beating (cardiac arrest)
- cardiogenic shock – where the heart's muscles are severely damaged and can no longer contract properly to supply enough blood to maintain many body functions
- heart rupture – where the heart’s muscles, walls or valves split apart (rupture)
These complications can occur quickly after a heart attack and are a leading cause of death.
Many people will die suddenly from a complication of a heart attack before reaching hospital.
Read more about the complications of a heart attack.
Outlook
The outlook for people who have had a heart attack can be highly variable, depending on:
- their age – the older you are, the more likely you are to experience serious complications
- the severity of the heart attack – specifically, how much of the heart's muscle has been damaged during the attack
- how long it took before a person received treatment – the longer the delay, the worse the outlook tends to be
In general, around one third of people who have a heart attack die as a result. These deaths often occur before a person reaches hospital or, alternatively, within the first 28 days after the heart attack.
If a person survives for 28 days after having a heart attack, their outlook improves dramatically and most people will go on to live for many years.