Different types of disease

• Disease is a disorder that affects an organism's body, organs, tissues or cells.
• Cancer is a disease caused by normal cells changing so that they grow and divide in an uncontrolled way, forming a lump called a tumour.
• Diabetes is a serious disease in which the body is unable to regulate blood sugar.
• Genetic diseases and conditions include heart disease, diabetes, and neurological disorders.
• Heart disease is a wide range of conditions that affect the heart.
• Neurological disorders are conditions affecting the nervous system, including the brain, spinal cord, and nerves, and which may also have an effect on associated systems such as the muscles.
• Other factors that can have major effects on physical and mental health include diet, lifestyle, alcohol, and factors such as genetics.
• Severe respiratory infections in babies can lead to asthma in later childhood.
• Severe physical ill health can lead to depression.
• Living in cells can be the trigger for cancers.
• Viruses are ultramicroscopic infectious non-cellular organisms that can replicate inside the cells of living hosts, with negative consequences.
• Depression is a condition which affects mental health and causes people to experience symptoms such as depressed mood, loss of interest or pleasure and feelings of guilt or low self-worth.
• An individual is more likely to suffer from infectious diseases if they have defects in the immune system.
• A drug is a substance that can change chemical reactions in the body.
• Human immunodeficiency virus (HIV) infections, which lead to AIDS, affect the immune system and increase the risk of infectious diseases.
• Interactions between different types of diseases can occur in a person's life.
• Stress is the body's response to mental or emotional pressure.
• Defects in the immune system can lead to an increased risk of infectious diseases.
• The majority of cases of cancer of the cervix are linked with a virus present in the female reproductive system.
• The role of the immune system is to prevent disease.
• Other types of mental illness can also be triggered by the immune system's reaction to pathogens and other foreign bodies.