Mohandas Gandhi said that health is the real wealth, not money — but a new series of funds could blur the line, helping investors cash-in on health trends.

Denver-based Janus Capital Group has launched four new thematic ETFs aimed at capturing demographic and behavioral changes related to health and fitness.

On Thursday, the Janus Capital Long-Term Care ETF, The Health and Fitness ETF, The Organics ETF and the Obesity ETF began trading on the NASDAQ exchange.

“We’ve seen questions around addressing these long-term issues from pensions, endowments, consultants and advisors,” says Nick Cherney, Janus Capital’s senior vice president and head of exchange-traded products. “Banks, wirehouses and wealth managers are trying to get ahead of these trends. We think that there will be significant interest in well-designed products that capture these trends.”

The Long-Term Care ETF, which carries the ticker OLD, aims to capture the world’s aging population by investing in long-term care companies including large REITs like Ventas and Welltower.

“For the mass-affluent U.S. investment management universe, long-term care is already a huge issue because it’s become part of their planning,” Cherney says. “The difference between retiring at 65 and retiring at 75 is often the cost of long-term care. We felt like it was something that could be meaningful to investors.”

Janus notes that in the U.S. alone, the population over the age of 65 will double by 2050 to 83.7 million people.

The Health and Fitness ETF, which carries the ticker FITS, aims to capture Americans’ increasing interest in healthy lifestyles by investing in health clubs, sports apparel companies, outdoor activities companies and fitness equipment manufacturers.

“Companies like Nike, Adidas and Lululemon are doing well because there’s been a shift towards fitness,” Cherney says. “People are spending a lot of money going out and buying sports apparel, and now they’re not just doing it if they’re running marathons or doing crossfit. We’re also investing in people selling bikes and golf equipment and facilities like gyms.”

Janus notes that health care club memberships have climbed by 19 percent since 2008, and that sales in sports apparel and wearable fitness technology are also trending upwards.

The Organics ETF, which carries the ticker ORG, seeks to capture an ongoing trend in the U.S. by investing in the production and sale of organic products.

“This is my favorite of the new ETFs because there’s an impact investing component involved,” Cherney says. “This is an area that people are very passionate about. People are paying a premium because they believe that organic products are better for the environment, for laborers and for consumers.”

Janus notes that sales of organic products in the U.S. have increased tenfold over the past 17 years.

The Obesity ETF, which carries the ticker SLIM, seeks to capture the obesity epidemic by investing in companies designing and selling products related to weight loss and diseases with comorbidity to obesity, such as diabetes, hypertension and sleep apnea.

“If you go through the CDC’s data, there are a cluster of diseases related to obesity,” Cherney says. “Health care providers, pharmaceutical companies and medical device companies make up the majority of the index.”

Janus notes that more than 10 percent of men and 14 percent of women are now classified as obese worldwide.

The ETFs are based on indexes using a modified market-cap weighting scheme — because massive companies like Whole Foods, Ventas, Nike and NovoNordisk could dominate smaller-capitalization constituents, they’re limited to 25 percent of any particular fund.

Nevertheless, some of the ETFs are highly concentrated, for example, more than 38 percent of SLIM is invested in two companies, NovoNordisk and Fresnius Medical Care. Nearly 22 percent of ORG is invested in Whole Foods.

The ETFs are overseen by the Janus Exchange Traded Products Team and are not actively managed. All four of the funds carry expense ratios of 50 basis points.

Cherney said that advisors could use the new ETFs as satellite holdings in client portfolios to capture the growth of health and fitness related companies as the global population ages and becomes more health conscious.

“We think these can be feathered in around the margins of portfolios to shift focus towards these demographic trends,” Cherney says. “To the extent that there are long-term impacts that can be expressed around the margins to provide some enhanced beta, these are great tool