Visit our new website:

What’s behind the house dust link to obesity?

  • Tue, 18 Jul 2017 00:32

Natural Health News — Poor diet and a lack of physical activity are major contributors to the world’s obesity epidemic, but researchers have also identified common environmental pollutants that could play a role.

In a laboratory study researchers from the Duke University in the US have found that hormone-disrupting chemicals commonly found in house dust can trigger fat cells to accumulate more fat.

Hormone disrupting chemicals, also known as endocrine-disrupting chemicals, or EDCs, are substances that can interfere with or mimic the body’s hormones. EDCs, such as flame retardants, phthalates and bisphenol-A, are known for their potential negative effects on reproductive, neurological and immune functions.

Animal studies also suggest that early life exposure to some EDCs can cause weight gain later in life, and, as a result, have been called “obesogens” or “chemical calories”.

Some manufacturers have reduced the use of EDCs in products, but many are still ubiquitous in consumer goods. These wind up in indoor dust that can be inhaled, ingested, or absorbed through the skin.

What you need to know

» It is well known that house dust accumulates a variety of toxins such as chemicals and heavy metals. Many of these are known to trigger weight gain in animals.

» In a pioneers laboratory study researchers tested the effects of house dust on fat cells, with startling results.

» Exposed to just tiny amounts of house dust, collected from the local area, the Researchers from Duke University in North Carolina, showed that exposure caused immature fat cells to quickly mature and accumulate fat.

» The researchers suggest that early exposure to these chemicals, via house dust, could impact children’s weigh gain, and ability to lose weight, later in life.

Helping fat cell to grow

Concerned about the potential effects EDCs in dust might have on children’s health, researcher Heather Stapleton and colleagues wanted to see if the compounds in house dust might have an effect on fat cells.

The researchers collected samples of indoor dust from 11 homes in North Carolina and tested extracts from the samples in fat cells taken from mice. These types of cells are often used to test compounds for potential effects on the accumulation of triglycerides, a type of fat.

Extracts from seven of the 11 dust samples triggered the pre-adipocytes to develop into mature fat cells and accumulate triglycerides. Extracts from nine samples spurred the cells to divide, creating a larger pool of precursor fat cells. Only one dust sample had no effect.

Additionally, among the 44 individual common house dust contaminants tested in this model, the pesticides pyraclostrobin, the flame-retardant tert-butylphenyldiphenyl phosphate (TBPDP), and dibutyl phthalate (DBP), a commonly used plasticiser, had the strongest fat-producing effects.

This suggests that the mixture of these chemicals in house dust is promoting the accumulation of triglycerides and fat cells, the researchers say.

Low levels, big effects

Amounts of dust as low as 3 micrograms – well below the mass of dust the 50 milligrams that the US Environmental Protection Agency says children consume daily – caused measurable effects. This is not unexpected. Hormone-disrupting chemicals are known to produce large effects at very small doses (just as hormones in the human body do).

For this reason the researchers also suggest that house dust is a likely exposure source of chemicals that may be able to disrupt metabolic health, particularly in children.

The study results were reported in the journal Environmental Science & Technology.


Natural Health News | NYR Natural NewsNatural Health News | NYR Natural News


Save big on top tech magazines.

Related Stories

White House: Joint Olympics march could give N. Koreans taste of freedom
  • Thu, 18 Jan 2018 08:21

WASHINGTON (Yonhap) -- The White House expressed hope Wednesday that North Koreans will get "a small taste of freedom"wh 코리아헤럴드

Behind the Rising Costs of Long-Term-Care Insurance
  • Thu, 18 Jan 2018 04:24

Long-term-care ​insurance was supposed to help seniors pay for costly nursing homes and personal aides. Now the industry is imploding. What’s ​a...

Hyundai Veloster Gets Much-Needed Redesign, but What’s with the Lancer Evo Face?
  • Thu, 18 Jan 2018 00:55

Launched back in 2011, the Veloster quickly turned from a rather exotic-looking hatchback into the unfortunate, forgotten child of the Hyundai family....

ANALYSIS: Republican strategists say Democrats virtually certain to win House in 2018
  • Thu, 18 Jan 2018 00:33

Prominent Republicans say privately Democrats virtually certain to win House. ABC News: This Week

Sports of The Times: The Center of U.S. Gymnastics’ Success Is Now a Haunted House
  • Wed, 17 Jan 2018 21:35

Athletes have said that they were sexually abused by the team doctor at the national training center in Texas, and Simon Biles said she dreads returni...

First-time buyers in Hong Kong may be allowed to use MPF savings to buy a house … but don’t hold your breath
  • Wed, 17 Jan 2018 18:45

First-time buyers in Hong Kong could eventually be allowed to withdraw their Mandatory Provident Fund savings to buy property, under proposals being c...

Which foods boost your mood? It depends on how old you are
  • Wed, 17 Jan 2018 16:32

It has long been accepted that the right food can boost your mood. But according to a new study, exactly what the ‘right’ food is could depend on ...

‘Democracy in crisis’: Freedom House warns of rising anti-democratic forces in Asia Pacific
  • Wed, 17 Jan 2018 15:08

POLITICAL rights and civil liberties around the world deteriorated to their lowest point in more than a decade in 2017, warns rights watchdog Freedom ...

Pierce: Guilt behind Celtics' try at sharing night
  • Wed, 17 Jan 2018 15:06

Paul Pierce will be the lone former Celtic honored when his jersey is retired on Feb. 11, and he says the only reason Isaiah Thomas nearly got a tribu...

Melatonin – more than just a sleep remedy?
  • Wed, 17 Jan 2018 14:33

Natural Health News — Supplementing with melatonin could help with more than just sleep problems, according to a new review. Melatonin’s main ...

Bannon subpoenaed by special counsel and House committee to testify on Russia probes - Washington Post
  • Wed, 17 Jan 2018 14:07

Washington PostBannon subpoenaed by special counsel and House committee to testify on Russia probesWashington PostSpecial counsel Robert S. Mueller II...

News Categories