Health science is the branch of science focused on health. There are two main approaches to health science: the study and research of the body and health-related issues to understand how humans (and animals) function, and the application of that knowledge to improve health and to prevent and cure diseases and other physical and mental impairments. The science builds on many sub-fields, including biology, biochemistry, physics, epidemiology, pharmacology, medical sociology. Applied health sciences endeavor to better understand and improve human health through applications in areas such as health education, biomedical engineering, biotechnology and public health.
In a study in JAMA Internal Medicine, researchers reported that people who ate the most sugar had a higher risk of death from heart disease, even if they weren’t overweight. Another study found that spending just three months on a sugar-heavy diet changed fat metabolism in healthy men, causing them to develop non-alcoholic fatty-liver disease, which boosts the risk of cardiovascular disease.

A contract between an insurance provider (e.g. an insurance company or a government) and an individual or his/her sponsor (e.g. an employer or a community organization). The contract can be renewable (e.g. annually, monthly) or lifelong in the case of private insurance, or be mandatory for all citizens in the case of national plans. The type and amount of health care costs that will be covered by the health insurance provider are specified in writing, in a member contract or "Evidence of Coverage" booklet for private insurance, or in a national health policy for public insurance.
In the first decade of the 21st century, the conceptualization of health as an ability opened the door for self-assessments to become the main indicators to judge the performance of efforts aimed at improving human health[16]. It also created the opportunity for every person to feel healthy, even in the presence of multiple chronic diseases, or a terminal condition, and for the re-examination of determinants of health, away from the traditional approach that focuses on the reduction of the prevalence of diseases[17].
With regular health insurance plans, you could face considerable out-of-pocket expenses which is why having a critical illness insurance plan can be beneficial. Unlike traditional health insurance, which reimburses the insured or provider for covered claims, critical illness insurance pays you directly if you're diagnosed with a covered critical illness and there are no copays or deductibles. Your insurer typically makes a lump sum cash payment for serious medical issues such as a heart attack, stroke, and cancer.
In-Network Provider: (U.S. term) A health care provider on a list of providers preselected by the insurer. The insurer will offer discounted coinsurance or co-payments, or additional benefits, to a plan member to see an in-network provider. Generally, providers in network are providers who have a contract with the insurer to accept rates further discounted from the "usual and customary" charges the insurer pays to out-of-network providers.

Mental illness is described as 'the spectrum of cognitive, emotional, and behavioral conditions that interfere with social and emotional well-being and the lives and productivity of people. Having a mental illness can seriously impair, temporarily or permanently, the mental functioning of a person. Other terms include: 'mental health problem', 'illness', 'disorder', 'dysfunction'.[38]


Jump up ^ "Requirement to take out insurance, "Frequently Asked Questions" (FAQ)". http://www.bag.admin.ch/themen/krankenversicherung/06377/index.html?lang=en. Swiss Federal Office of Public Health (FOPH), Federal Department of Home Affairs FDHA. 8 January 2012. Archived from the original (PDF) on 3 December 2013. Retrieved 21 November 2013. External link in |website= (help)

Medicare insurance plans include coverage for hospital, medical, and some prescription drugs. Medicare supplemental insurance plans, also called Medigap, can help pay for your copays and deductibles. You can also explore Medicare Part D plans, which are a standalone prescription drug program offering coverage for medication costs. eHealth makes it easy to browse insurance plans in your area while advocating for you throughout the process. Guidance is available at no cost from more than 200 licensed insurance agents.


Focusing more on lifestyle issues and their relationships with functional health, data from the Alameda County Study suggested that people can improve their health via exercise, enough sleep, maintaining a healthy body weight, limiting alcohol use, and avoiding smoking.[28] Health and illness can co-exist, as even people with multiple chronic diseases or terminal illnesses can consider themselves healthy.[29]
There are different options available to both employers and employees. There are different types of plans, including health savings accounts and plans with a high or low deductible. The plans that have the high deductibles typically cost the employee less for the monthly premiums, but the part they pay for each time they use their insurance, as well as the overall deductible before the insurance covers anything is much higher. These types of plans are good for the people who rarely go to the doctor and need little health care. The lower deductible plans are typically more expensive, however, they save the employee from having to spend a lot of money out of pocket for services and treatment. The recent trend for employers is to offer the high deductible plans, called consumer-driven healthcare plans, because it costs them less overall for the care their employees need, but it is a lower monthly premium for the employees.[67]
Health insurance solutions provided through USAA Life General Agency, Inc. (LGA) (known in CA and NY as USAA Health and Life Insurance Agency), which acts as an agent for select insurance companies to provide products to USAA members. LGA representatives are salaried and receive no commissions. However, LGA receives compensation from those companies, which may be based on the total quantity and quality of insurance coverage purchased through LGA. Plans not available in all states. Each company has sole financial responsibility for its own products.

The environment is often cited as an important factor influencing the health status of individuals. This includes characteristics of the natural environment, the built environment and the social environment. Factors such as clean water and air, adequate housing, and safe communities and roads all have been found to contribute to good health, especially to the health of infants and children.[19][30] Some studies have shown that a lack of neighborhood recreational spaces including natural environment leads to lower levels of personal satisfaction and higher levels of obesity, linked to lower overall health and well being.[31] This suggests that the positive health benefits of natural space in urban neighborhoods should be taken into account in public policy and land use.
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