Nutrition can be categorized as the science which deals with food & it is directly or indirectly related to health. Public Health Nutrition is a significant inclination for people around the world. Nutrition & Wellness depends upon food, care, fitness and atmosphere. Malnutrition is a condition of nutrition in which a person is not eating the diet with sufficient nutrients required for the body. Food safety and Community nutrition is of prime importance as intake of unhealthy diet along with nutritional deficiencies are the major causes of the food borne diseases & deaths.

Diabetes occurs when the demand and production of the insulin hormone produced by the beta cells of Islets of Langerhans of Pancreas is not completed. Most of these diabetes-related conditions occur because of uncontrolled blood glucose levels and this may lead to a number of short and long-term health complications including heart disease, nerve damage, hypoglycemia, vision problems Cardiovascular diseases, Nerve damage, neuropathy, Kidney damage (nephropathy), diabetic retinopathy, foot damage, skin conditions, hearing impairment, Alzheimer's disease and many more. With good control and living a healthy & active lifestyle, it is possible to live a normal life.

Obesity is a risk factor for the development of insulin resistance, with pancreatic beta cells compensating for insulin resistance by augmenting insulin secretion. The failure of beta-cells is believed to cause pre-diabetes, a condition that can lead to diabetes. Obesity increases the risk of developing several serious health conditions including: High triglycerides and low high-density lipoprotein (HDL) cholesterol, Type 2 diabetes, High blood pressure, Gallbladder disease, Heart disease, Heart Stroke, Gynecological problems, such as infertility and irregular periods.

Endocrinology is a branch of medicine dealing with the endocrine system, metabolism & its disorders and its specific secretions known as hormones, growth promotion and malignancy. It may lead to Polycystic ovary syndrome, Diabetes mellitus, Hyperlipidemia, Osteoporosis, Lipid Control in Diabetes and Metabolic Syndrome, Growth hormone deficiency and growth disorders, Follicular and Medullary thyroid cancer, Thyroid growths, underactivity/overactivity.

Research has demonstrated that adolescent’s programs can decrease the predominance of health risk among young people and positively effect on academic performance. Since they are in developmental transition, adolescents and young adult’s grown-ups are especially sensitive to natural that is, logical or encompassing impacts. Addressing to the constructive advancement of young people encourages their adoption of healthy behaviors and helps to develop a healthy and productive life. Experts in child health and maternal focus on the complex public health problems affecting women, infants and their families.

Chronic diseases are the major cause of mortality. It mainly includes arthritis, asthma, cancer, COPD, diabetes and viral diseases such as hepatitis C and HIV/AIDS. Examples include Celiac disease, diabetes mellitus type 1, Sarcoidosis, systemic lupus erythematosus (SLE), Sjogren's syndrome, Churg-Strauss Syndrome, Hashimoto's thyroiditis, Graves' disease, Osteoporosis, Addison's Disease, rheumatoid arthritis (RA), Polymyositis (PM), and Dermatomyositis (DM). They can also be treated with steroids. It may also include Communicable and Non-Communicable diseases, Sexually Transmitted Diseases, Genetic diseases, Congenital diseases, Autoimmune diseases, pharmaceutical and microbiological infections etc.

Dentistry is a branch of medicine that comprises of the examination, diagnosis, prevention, and treatment of infections, disorders and states of the oral and dental health. It comprises Dental Tools and Treatment Techniques, Cosmetic Dentistry, Oral Diseases, Periodontal Services and Future Trends in Dentistry, Oral Implantology, Oral diseases and Prevention, Oral Cancer, Current Concepts in Oral Health, Dental sleep medicine, Dental Nursing, Dental Implants and Pediatric Dentistry etc.

Mental health is a state of psychological well-being or an absence of a mental disorder. It is the psychological state of a person who is functioning at a normal level of emotional and behavioral adjustment. A person struggling with his behavioral health may face stress, depression, anxiety, relationship problems, grief, addiction, ADHD or learning disabilities, Mood disorders, schizophrenia, hallucinations, Eating disorders or other psychological concerns. Counsellors, therapists, life coaches, psychologists, nurse practitioners or physicians can help manage behavioral health concerns with treatments such as therapy, counselling, or medication.

Healthcare Management is related to leadership, supervision, management and administration of health care systems, public health systems and hospitals. Healthcare management usually refers to the management of the business aspects of a clinic or healthcare facility. Hospital management is a facility where various treatments are involved such as medical, surgical, psychiatric, and many more. The hospital manager plays a vital role in hospital management such as it oversees physicians, nurses, and other healthcare professionals in order to make sure that they have everything they need in order to work efficiently.

It mainly includes: Gynecological Health and Disorders, Pregnancy Issues and Management, Polycystic Ovary Syndrome (PCOS), Menopause & Osteoporosis, Fetal and Maternal Medicine, Infertility & Related Disorders, Surgical Gynecology, Endometriosis, Contraception, Maternal and Child Health, Gynecology & Obstetrics, Breast Cancer, Gynecological Cancers, Reproductive Health, Fertility and Sexual Health, Midwifery and Nursing Practice, STDs & STIs, Heart Diseases in Women.

Cardiovascular disease (CVD) involves the class of diseases heart or blood vessels. Cardiovascular disease includes coronary artery diseases such as angina and myocardial infarction also known as heart attack. Other CVDs include stroke, heart failure, rheumatic heart disease, cardiomyopathy, congenital heart disease, valvular heart disease, carditis, peripheral artery disease, venous thrombosis, coronary artery bypass grafting, endocarditis, rheumatic heart disease, atherosclerosis, heart transplantation, Open heart surgery, Cardiomyopathies, Adult congenital heart disease, heart valve surgery, Extracorporeal membrane oxygenation (ECMO), Clot busting medicine, Cardio-oncology etc.

Primary healthcare is the main branch of healthcare system including diagnosis, prevention, treatment and screening. Primary Healthcare is dedicated to serving those who experience a barrier in receiving care. Primary Healthcare provides medical dental, immune health, vaccination, behavioral & mental health conditions before they become serious.  Primary Healthcare is the first level of contact that individuals, families, communities have with the healthcare system. Occupational health is a specialist branch of medicine that focuses on the physical and mental wellbeing of employees in the workplace.

Public health nursing is the field of nursing which deals with the specialty in Public health. Public health nurses are the community of nurses who are involved in integrating community and who knows well about clinical methods and treatment of health. Quality healthcare and patient safety are the streams which takes care of the health of the patient and his safety.

The epidemiology of cancer is the study of the factors affecting cancer. The study of cancer epidemiology uses epidemiological methods to find the cause of cancer and to identify and develop improved treatments. Cancers account for approximately 13% of deaths. The most common are lung cancer (1.4 million deaths), colorectal cancer (610,000), liver cancer (700,000), and breast cancer (460,000).

Telemedicine is the utilization of media transmission and information technology to give clinical social insurance in healthcare. It is utilized to enhance access to medical administrations that are commonly not reliably accessible in far-off bucolic places. Early types of telemedicine accomplished with phone and radio have been added with video telephony, progressed indicative techniques upheld by circulated customer/server applications, and moreover with telemedical gadgets to help in-home care. It also includes Telemedicine in Disaster Relief, Provides High-Quality care for Prison Facilities, Minimizes absentees in School, Medication Management by Telepsychiatry program.

Environmental health varies from organization to organization, although the basic premise remains the same. It reports all the physical, chemical, and biological factors external to a person and all the related factors which impacts the behavior. It is targeted towards preventing disease and creating health-supportive environments. Global environmental health sustainability includes sustainable health interventions, like water sanitation, health education, hygiene programs and the community investments that can improve the quality of environmental health.

Health Economics outcomes are to analyze the burden and etiology of infectious diseases and non-communicable diseases among populations and to gather and disseminate data that will help improve the quality of health safety across borders. Health Economics policies address the critical issues across the global health and facilitate interaction and collaboration across the people.

Health economics is associated with the value, behavior, efficiency & effectiveness in the production and consumption of health care & health-affecting behaviors such as drinking, smoking etc. Health care policies includes the plans, actions & decisions that are taken to achieve specific health care goals within a society. It involves National Health policy, personal health care policy, Nursing Healthcare policy, pharmaceutical policy, and public health policy such as vaccination policy, tobacco control policy and breastfeeding promotion policy.

Veterinary public health is an element of public health which emphasizes the focus on the application of veterinary science to protect and improve the physical, mental and social well-being of humans. It impacts on human health by reducing exposure to hazards arising from animals, animal products, and their environment. Examples of these hazards include zoonosis, vector borne infections and other communicable diseases, chemicals and drugs used for animals and injuries from exposure to animals.

Traditional Medicine is a system of primary health care that includes Acupuncture, herbal medicine, remedial massage, Chinese Medicine, Traditional medicine, Acupuncture, exercise and breathing therapy, diet and lifestyle advice. It also includes Personalized medicine, Traditional Midwifery, Traditional Pharmaceuticals and Biologic Products, Ancient Iranian medicine etc.