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David Scott Blitzer (born September 7, 1969) is an American investor and sports team owner. Blitzer is the chairman of the private equity firm Blackstone's tactical opportunities division and managing partner of the New Jersey Devils ice hockey team and the Philadelphia 76ers basketball team. He additionally owns several association football clubs under Global Football Holdings and holds

David Bonderman (November 27, 1942 – December 11, 2024) was an American billionaire businessman. He was the founding partner of TPG Inc. (formerly Texas Pacific Group), and its Asian affiliate, Newbridge Capital. He was also one of the minority owners of the NBA's Boston Celtics as well as the co-founder and co-majority owner (along with Jerry Bruckheimer) of the Seattle Kraken of the Na

David Lee Chaum (born 1955) is an American computer scientist, cryptographer, and inventor. He is known as a pioneer in cryptography and privacy-preserving technologies and widely recognized as the inventor of digital cash. His 1982 dissertation, "Computer Systems Established, Maintained, and Trusted by Mutually Suspicious Groups," is the first known proposal for a blockchain protocol. C

David LeFevre Dodd (August 23, 1895 – September 18, 1988) was an American educator, financial analyst, author, economist, and investor. In his student years, Dodd was a protégé and colleague of Benjamin Graham at Columbia Business School.

David Elliot Shaw (born March 29, 1951) is an American billionaire, scientist, and founder of hedge fund D. E. Shaw & Co.. A former assistant professor in the computer science department at Columbia University, Shaw earned his fortune exploiting inefficiencies in financial markets with the help of early Internet networks and quantitative trading strategies. In 2001, Shaw turned to full-t

David Alan Tepper (born September 11, 1957) is an American billionaire hedge fund manager, the founder and president of Appaloosa Management, a global hedge fund based in Miami Beach, Florida.

David's Bridal is a clothier in the United States that specializes in wedding dresses, bridesmaid dresses, prom and homecoming dresses, quinceañera dresses, flower girl dresses, other formal wear, and alterations. Until filing for bankruptcy in 2023, David's Bridal operated 298 stores in 49 states, Canada, and the United Kingdom, making it the largest American bridal-store chain It sold

Dayforce, Inc., formerly Ceridian, is an American human resources software and services company.

Dean Baker (born July 13, 1958) is an American macroeconomist who co-founded the Center for Economic and Policy Research (CEPR) with Mark Weisbrot. Baker has been credited as one of the first economists to have identified the 2007–08 United States housing bubble.

A debasement of coinage is the practice of lowering the intrinsic value of coins, especially when used in connection with commodity money, such as gold or silver coins, while continuing to circulate them at face value. A coin is said to be debased if the quantity of gold, silver, copper or nickel in the coin is reduced.

A debit card, also known as a check card, cheque card or bank card, is a payment card that can be used in place of cash to make purchases. The card usually consists of the bank's name, a card number, the cardholder's name, and an expiration date, on either the front or the back. Many new cards now have a chip on them, which allows people to use their card by touch (contactless), or by in

Debit card cashback (known as cashback at the tills in the United Kingdom, and as cash out in Australia and New Zealand), is a service offered to retail customers whereby an amount is added to the total purchase price of a transaction paid by debit card and the customer receives that amount in cash along with the purchase. For example, a customer purchasing $18.99 worth of goods at a su

Debt is an obligation that requires one party, the debtor, to pay money borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Commercial debt is generally subject to contractual terms regarding the amount and timing of repayments of principal and interest. Loans, bonds, notes, and mo

A debt buyer is a company, sometimes a collection agency, a private debt collection law firm, or a private investor, that purchases delinquent or charged-off debts from a creditor or lender for a percentage of the face value of the debt based on the potential collectibility of the accounts. The debt buyer can then collect on its own, utilize the services of a third-party collection agenc

A debt clock is a public counter, which displays the government debt (also known as public debt or national debt) of a public corporation, usually of a state, and which visualizes the progression through an update every second. Because of the mirror-image correlation between liabilities and accounts receivable meanwhile there are assets clocks or property clocks also, which visualize the

Debt monetization or monetary financing is the practice of a government borrowing money from the central bank to finance public spending instead of selling bonds to private investors or raising taxes. The central banks who buy government debt, are essentially creating new money in the process to do so. This practice is often informally and pejoratively called printing money or (net) mone

Debt settlement (also called debt reduction, debt negotiation or debt resolution) is a settlement negotiated with a debtor's unsecured creditor. Commonly, creditors agree to forgive a large part of the debt: perhaps around half, though results can vary widely. When settlements are finalized, the terms are put in writing. It is common that the debtor makes one lump-sum payment in exchange

Debt-for-nature swaps are financial transactions in which a portion of a developing nation's foreign debt is forgiven in exchange for local investments in environmental conservation measures.

Debt-Lag is a condition which results from overuse of a credit card or other forms of credit while travelling. The debt itself can refer to the amount spent in the lead up to travelling, during the trip and any unexpected costs which come about from that trip, such as cross currency conversion fees and foreign ATM access charges.

Debtors Anonymous (D.A.) is a twelve-step program for people who want to stop incurring unsecured debt. Collectively they attend more than 500 weekly meetings in fifteen countries, according to data released in 2011. Those who compulsively incur unsecured debt are said to be engaged in compulsive borrowing and are known as compulsive debtors.

A debtors' prison is a prison for people who are unable to pay debt. Until the mid-19th century, debtors' prisons (usually similar in form to locked workhouses) were a common way to deal with unpaid debt in Western Europe. Destitute people who were unable to pay a court-ordered judgment would be incarcerated in these prisons until they had worked off their debt via labour or secured outs

Decartelization is the transition of a national economy from monopoly control by groups of large businesses, known as cartels, to a free market economy. This change rarely arises naturally, and is generally the result of regulation by a governing body with the authority to decide what structures are permissible.

Decimalisation or decimalization (see spelling differences) is the conversion of a system of currency or of weights and measures to units related by powers of 10.

The Defence, Security and Resilience Bank or DSR Bank is a proposed international financial institution backed by the leaders of Canada, Albania, Belgium, Greece, Latvia, Luxembourg, Romania, Turkey and Ukraine. It aims to help allied countries work jointly to fund defence and security-related investments by providing financial support, such as accessible loans to governments. To be head

In economics, deflation is an increase in the real value of the monetary unit of account, as reflected in a decrease in the general price level of goods and services exchanged, measurable by broad price indices.

Del Monte Foods Inc. (trading as Del Monte Foods) is an American food production and distribution company and subsidiary of NutriAsia, headquartered in Walnut Creek, California. Del Monte Foods is one of the largest producers, distributors and marketers of branded processed food for the U.S. retail market, generating approximately $1.73 billion of annual sales. Its portfolio of brands in

At the micro-economic level, deleveraging refers to the reduction of the leverage ratio, or the percentage of debt in the balance sheet of a single economic entity, such as a household or a firm. It is the opposite of leveraging, which is the practice of borrowing money to acquire assets and multiply gains and losses.

Dell Technologies Inc. is an American multinational technology company that has been headquartered in Round Rock, Texas, since 1994. It was formed as a result of the September 2016 merger of Dell Inc. and EMC Corporation. Dell Technologies ranked 44th on the 2025 Fortune 500 rankings of the largest United States corporations based on its 2024 revenue; its products include personal comput

In finance, delta neutral describes a portfolio of related financial securities, in which the portfolio value remains unchanged when small changes occur in the value of the underlying security (having zero delta). Such a portfolio typically contains options and their corresponding underlying securities such that positive and negative delta components offset, resulting in the portfolio's

In monetary economics, the demand for money is the desired holding of financial assets in the form of money: that is, cash or bank deposits rather than investments. It can refer to the demand for money narrowly defined as M1 (directly spendable holdings), or for money in the broader sense of M2 or M3.

In economics, a demand shock is a sudden event that increases or decreases demand for goods or services temporarily.

Demand-pull inflation occurs when aggregate demand in an economy is more than aggregate supply. It involves inflation rising as real gross domestic product rises and unemployment falls, as the economy moves along the Phillips curve. This is commonly described as "too much money chasing too few goods". More accurately, it should be described as involving "too much money spent chasing too

Demutualization is the process by which a customer-owned mutual organization (mutual) or co-operative changes legal form to a joint stock company. It is sometimes called stocking or privatization. As part of the demutualization process, members of a mutual usually receive a "windfall" payout, in the form of shares in the successor company, a cash payment, or a mixture of both. Mutualizat

Dennis B. Levine (born August 5, 1952) is a corporate consultant and former investment banker. He was a managing director at the investment banking firm Drexel Burnham Lambert in the 1980s. Levine was one of the first of several high-profile insider trading defendants in the Wall Street insider trading investigations of the mid-1980s. As a result of the investigation by and subsequent p

Denny's (also known as Denny's Diner on some locations' signage) is an American table service diner-style restaurant chain. It operates over 1,400 restaurants in the United States, Canada, Mexico, Puerto Rico, and several other international locations.

In Spain and Latin America, the denominación de origen (Spanish: [denominaˈθjon de oˈɾixen]; lit. 'designation of origin') is part of a regulatory geographical indication system used primarily for foodstuffs such as cheeses, condiments, honey, and meats, among others. In wines, it parallels the hierarchical systems of France (1935) and Italy (1963), although Rioja (1925) and Jerez (1933

Deposit insurance, deposit protection or deposit guarantee is a measure implemented in many countries to protect bank depositors, in full or in part, from losses caused by a bank's inability to pay its debts when due. Deposit insurance or deposit guarantee systems are one component of a financial system safety net that promotes financial stability, and are typically integrated with bank

In India, a Depository Participant (DP) is described as an Agent of the depository. They are the intermediaries between the depository and the investors. The relationship between the DPs and the depository is governed by an agreement made between the two under the Depositories Act. In a strictly legal sense, a DP is an entity who is registered as such with SEBI under the sub section 1A o

The Depository Trust & Clearing Corporation (DTCC) is an American financial market infrastructure company that provides clearing, settlement and trade reporting services to financial market participants. It performs the exchange of securities on behalf of buyers and sellers and functions as a central securities depository by providing central custody of securities.

In accountancy, depreciation refers to two aspects of the same concept: first, an actual reduction in the fair value of an asset, such as the decrease in value of factory equipment each year as it is used and wears, and second, the allocation in accounting statements of the original cost of the assets to periods in which the assets are used (depreciation with the matching principle).

In finance, a derivative is a contract between a buyer and a seller. The derivative can take various forms, depending on the transaction, but every derivative has the following four elements:

The derivatives market is the financial market for derivatives – financial instruments like futures contracts or options – which are derived from other forms of assets.

Deutsche Bank AG (German pronunciation: [ˈdɔʏtʃə ˈbaŋk ʔaːˈɡeː] , lit. 'German Bank') is a German multinational banking institution headquartered in Frankfurt, Germany. It is dual-listed on the Frankfurt Stock Exchange and the New York Stock Exchange.

The Deutsche Bank Prize in Financial Economics honors renowned researchers who have made influential contributions to the fields of finance and money and macroeconomics, and whose work has led to practical and policy-relevant results. It was awarded biannually from 2005 to 2015 by the Center for Financial Studies (CFS), in partnership with Goethe University Frankfurt, and is sponsored by

In macroeconomics and modern monetary policy, a devaluation is an official lowering of the value of a country's currency within a fixed exchange rate system, in which a monetary authority formally sets a lower exchange rate of the national currency in relation to a foreign reference currency or currency basket. The opposite of devaluation, a change in the exchange rate making the domesti

Development impact bonds (DIBs) are performance-based investment instruments intended to finance development programmes in low resource countries, which are built off the model of social impact bond (SIB). In general, the model works the same: an investor provides upfront funding to the implementer of a program. An evaluator measures the results of the implementer's program. If these res

DFO Management, LLC (formerly MSD Capital) is an American family office that manages the capital of Michael Dell and his family. Established in 1998, it is headquartered in New York City and has offices in Santa Monica, California and West Palm Beach, Florida.

In derivatives trading, the term diagonal spread is applied to an options spread position that shares features of both a calendar spread and a vertical spread. It is established by simultaneously buying and selling equal amount of option contracts of the same type (call options or put options) but with different strike prices and expiration dates.

Diamonds were largely inaccessible to investors until the recent advent of regulated commodities, due to a lack of price discovery and transparency. The characteristics of individual diamonds, especially the carat weight, color and clarity, have significant impact on values, but transactions were always private. With the standardized commodity as an underlying asset, several market trade

Diebold Nixdorf, Incorporated is an American multinational financial and retail technology company based in North Canton, Ohio. It specializes in the sale, manufacture, installation, and service of self-service transaction systems (such as ATMs and currency processing systems), point-of-sale terminals, physical security products, and software and related services for global financial, re

Diem (formerly known as Libra) was a permissioned blockchain-based stablecoin payment system proposed by the American social media company Facebook. The plan also included a private currency implemented as a cryptocurrency. The launch was originally planned to be in 2020, but only rudimentary experimental code was released.

Digital banking is part of the broader context for the move to online banking, where banking services are delivered over the internet. The shift from traditional to digital banking has been gradual, remains ongoing, and is constituted by differing degrees of banking service digitization. Digital banking involves high levels of process automation and web-based services and may include AP

A digital card is either a physical item, such as a memory card on a camera, or, increasingly since 2017, the digital content hosted

Digital Currency Group Inc. (DCG) is an American investment company focusing on the digital currency market and decentralized technologies. It is headquartered in Stamford, Connecticut. The subsidiaries include Grayscale Investments, Yuma, Foundry, Luno, and Fortitude Mining. It also formerly owned the now-inactive Genesis Global Holdco and CoinDesk.

Digital marketing is a component of marketing that uses digital technologies such as desktop computers, mobile phones, and other digital media platforms to promote products and services.

Digital Research, Inc. (DR or DRI) was a privately held American software company created by Gary Kildall to market and develop his CP/M operating system and related 8-bit, 16-bit and 32-bit systems like MP/M, Concurrent DOS, FlexOS, Multiuser DOS, DOS Plus, DR DOS and GEM. It was the first large software company in the microcomputer world. Digital Research was originally based in Pacifi

Diners Club International Ltd. (DCI), founded as Diners Club, is a payment network owned by Capital One. Diners Club and its franchises are accepted in over 200 countries and territories. Card issuers operating in approximately 45 countries have exclusive individual licenses to issue cards on the Diners Club network in a given country.

The direct market is the dominant distribution and retail network for American comic books. The concept of the direct market was created in the 1970s by Phil Seuling. The network currently consists of:

Direct marketing is a form of communicating an offer, where organizations communicate directly to a pre-selected customer and supply a method for a direct response. Among practitioners, it is also known as direct response marketing. In contrast to direct marketing, advertising is more of a mass-message nature.

Direct-to-consumer advertising (DTCA) refers to the marketing and advertising of pharmaceutical products directly to consumers as patients, as opposed to specifically targeting health professionals. The term is synonymous primarily with the advertising of prescription medicines via mass media platforms—most commonly on television and in magazines, but also via online platforms.

A disability pension is a form of pension given to those people who are permanently or temporarily unable to work due to a disability.

Discount policy is a policy tool used by central banks to control the money in circulation by raising or lowering interest rates.

The discount window is an instrument of monetary policy (usually controlled by central banks) that allows eligible institutions to borrow money from the central bank, usually on a short-term basis, to meet temporary shortages of liquidity caused by internal or external disruptions.

In macroeconomics, discretionary policy is an economic policy based on the ad hoc judgment of policymakers as opposed to policy set by predetermined rules. For instance, a central banker could make decisions on interest rates on a case-by-case basis instead of allowing a set rule, such as Friedman's k-percent rule, an inflation target following the Taylor rule, or a nominal income targe

Discussion Materials: Tales of a Rookie Wall Street Investment Banker (ISBN 978-1642934083) is a 2020 memoir by Bill Keenan in which Keenan recounts his tenure as an investment banking associate at Deutsche Bank.

Disinflation is a decrease in the rate of inflation – a slowdown in the relative rate of increase of the general price level of goods and services in a nation's gross domestic product over time. It is the opposite of reflation.

Disintermediation is the removal of intermediaries in economics from a supply chain, or "cutting out the middlemen" in connection with a transaction or a series of transactions. Instead of going through traditional distribution channels, which had some type of intermediary (such as a distributor, wholesaler, broker, or agent), companies deal with customers directly and vice versa, for ex

Disinvestment refers to the use of a concerted economic boycott to pressure a government, industry, or company towards a change in policy, or in the case of governments, even regime change. The term was first used in the 1980s, most commonly in the United States, to refer to the use of a concerted economic boycott designed to pressure the government of South Africa into abolishing its ap

Distribution is the process of making a product or service available for the consumer or business user who needs it, and a distributor is a business involved in the distribution stage of the value chain. Distribution can be done directly by the producer or service provider or by using indirect channels with distributors or intermediaries. Distribution (or place) is one of the four elemen

In finance, a dividend future is an exchange-traded derivative contract that allows investors to take positions on future dividend payments. Dividend futures can be on a single company, a basket of companies, or on an Equity index. They settle on the amount of dividend paid by the company, the basket of companies, or the index during the period of the contract.

The dividend puzzle, as originally framed by Fischer Black,

The Dodd–Frank Wall Street Reform and Consumer Protection Act, commonly referred to as the Dodd–Frank Act, is a United States federal law enacted on July 21, 2010, as the primary legislative response to the 2007–2008 financial crisis—the worst financial crisis since the Great Depression. Named for its sponsors, Senator Chris Dodd and Representative Barney Frank, the law was signed by Pre

Dogecoin ( DOHJ-koyn or DOHZH-koyn, Abbreviation: DOGE; sign: Ð) is a cryptocurrency created by software engineers Billy Markus and Jackson Palmer, who decided to create a payment system as a joke, making fun of the wild speculation in cryptocurrencies at the time. It is considered both the first "meme coin", and more specifically the first "dog coin". Despite its satirical nature, some

Dollar Tree, Inc., formerly known as Dollar Tree Stores, Inc., is an American multi-price-point chain of discount variety stores. Headquartered in Chesapeake, Virginia, it is a Fortune 500 (sometimes referred to as Fortune 200) company and as of August 1, 2026 operates 9,150 stores throughout the 48 contiguous U.S. states (and the District of Columbia) and Canada.Its stores are supported

Domestic liability dollarization (DLD) pertains to the denomination of banking system deposits and loaning in a currency other than that of the country in which they are held. DLD does not refer exclusively to denomination in US dollars, as DLD encompasses accounts denominated in internationally traded "hard" currencies such as the British pound sterling, the Swiss franc, the Japanese ye

A doppelgänger brand image is a parody logo or narrative intended to highlight ethical issues regarding the product advertised. They are commonly associated with the brand's lack of authenticity, and most are created as a form of individual protest, either posted digitally on social media, or displayed as physical graffiti.

In industrial economics, double marginalization occurs when two firms at different levels of the supply chain possess market power and independently apply markups, resulting in a final price that is higher than it would be if the firms were integrated. Double marginalization is clearly negative from an economic welfare point of view, as the double markup leads to a final price is higher

Dow Jones & Company, Inc. (also known simply as Dow Jones) is an American publishing firm owned by News Corp, and led by CEO Almar Latour. The company publishes The Wall Street Journal, Barron's, MarketWatch, Mansion Global, Financial News and Private Equity News.

A dummy corporation, dummy company, or false company is an entity created to serve as a front or cover for one or more companies. It can have the appearance of being real (logo, website, and sometimes employing actual staff), but lacks the capacity to function independently. The dummy corporation's sole purpose is to protect "an individual or another corporation from liability in either

The Dun & Bradstreet Holdings, Inc. (D&B) is an American company that provides commercial data, analytics, and insights for businesses. Headquartered in Jacksonville, Florida, the company offers a wide range of products and services for risk and financial analysis, operations and supply, and sales and marketing professionals, as well as research and insights on global business issues. It

The Durbin amendment, implemented by Regulation II, is a provision of United States federal law, 15 U.S.C. § 1693o-2, that requires the Federal Reserve to limit fees charged to retailers for debit card processing. It was passed as part of the Dodd–Frank financial reform legislation in 2010, as a last-minute addition by Dick Durbin, a senator from Illinois, after whom the amendment is nam

E-ZPass Interagency Group (E-ZPass Group trade name and E-ZPass product brand) is an electronic toll collection system used on toll roads, toll bridges, and toll tunnels in the eastern half of the United States. The group itself is composed of several states' member agencies, which share the same technology and allow travelers to use the same transponder on toll facilities throughout the

Edwin Clarence Riegel (June 18, 1879 – 1953), generally known as E.C. Riegel, was an American author, consumer advocate and independent scholar who campaigned against restrictions on free markets that harmed consumers and promoted an alternative monetary theory and an early private enterprise currency alternative.

Early American currency went through several stages of development during the colonial and post-Revolutionary history of the United States. John Hull was authorized by the Massachusetts legislature to make the earliest coinage of the colony (the willow, the oak, and the pine tree shilling) in 1652.

The early history of private equity relates to one of the major periods in the history of private equity and venture capital. Within the broader private equity industry, two distinct sub-industries, leveraged buyouts and venture capital experienced growth along parallel although interrelated tracks.

Earned media (or free media) is content relating to a person or organization, which is published by a third party without any form of payment to the publisher. It includes articles by media outlets, interviews with the person or representatives of the organization, or bylined editorials in trade press and other publications. The phrase "earned media" serves as a contrast to the concept o

EarnIn is an American earnings management company that provides earned wage access services and other financial and payroll-related services.

An earnings call is a teleconference or webcast in which a public company discusses its financial results for a reporting period, often providing earnings guidance for future performance. The term stems from earnings per share (EPS), calculated as net income (the "bottom line" on the income statement divided by the number of outstanding shares). Earnings calls typically accompany a press

The East Asian model (Japanese: 修正資本主義, romanized: shūsei shihonshugi, lit. 'modified capitalism'), pioneered by Japan, is a plan for economic growth whereby the government invests in certain sectors of the economy in order to stimulate the growth of specific industries in the private sector. It generally refers to the model of development pursued in East Asian economies such as Japan, S

The United States EB-5 visa, employment-based fifth preference category or EB-5 Immigrant Investor Visa Program was created in 1990 by the Immigration Act of 1990. It provides a method for eligible immigrant investors to become lawful permanent residents—informally known as "green card" holders—by investing substantial capital to finance a U.S. business (known as a "new commercial enterp

EBA Clearing is a provider of pan-European payment infrastructure wholly owned by shareholders that consist of major European banks. It derives its name from the Euro Banking Association which was instrumental in its establishment in June 1998, but has always been a separate organization.

An economic expansion is an upturn in the level of economic activity and of the goods and services available. It is a finite period of growth, often measured by a rise in real GDP, that marks a reversal from a previous period, for example, while recovering from a recession. The explanation of fluctuations in aggregate economic activity between expansions and contractions ("booms" and "bu

The Economic Growth, Regulatory Relief, and Consumer Protection Act (abbreviated EGRRCPA; Pub. L. 115–174 (text) (PDF), S. 2155) was signed into law by President Donald Trump on May 24, 2018. The bill eased financial regulations imposed by the Dodd–Frank Wall Street Reform and Consumer Protection Act after the 2008 financial crisis.

Economic materialism, known colloquially simply as materialism, is a personal attitude that attaches importance to acquiring (and often consuming) material goods. The use of the term "materialistic" to describe an individual's personality or a society tends to have a negative or critical connotation. Rarely also called acquisitiveness, it is often associated with a value system that rega

Economic returns are the gains in output, income, or value, which are generated from the employment of productive inputs or resources.

Economic stagnation is a prolonged period of slow economic growth, typically measured in GDP per capita growth or median income growth, which is usually accompanied by high unemployment. Under some definitions, slow means significantly slower than potential growth as estimated by macroeconomists, even though the growth rate may be nominally higher than in other countries not experiencing

Bitcoin was designed by its pseudonymous inventor, Satoshi Nakamoto, to work as a currency, but its status as a currency is disputed. Economists define money as a store of value, a medium of exchange and a unit of account, and agree that bitcoin does not currently meet all these criteria.

The economy monetization is a metric of the national economy, reflecting its saturation with liquid assets. The level of monetization is determined both by the development of the national financial system and by the whole economy. The monetization of economy also determines the freedom of capital movement. Economists have long recognized the important role played by the money supply. Nev

Edward Scott Lampert (born July 19, 1962) is an American billionaire businessman. He is the former chief executive and chairman of Sears Holdings, the founder of Transformco, and the founder, chairman, and chief executive of ESL Investments. Until May 2007, he was a director of AutoNation. He was a director of AutoZone from 1999 to 2006. As of December 2025, his net worth was estimated a

Eden Gemeinnützige Obstbau-Siedlung is a fruit-growing cooperative in Oranienburg north of Berlin. The cooperative was founded in 1893 exclusively for vegetarians but since 1901 has accepted membership for anyone who "adopts a healthy lifestyle".