Navigation Links
'Obese but happy gene' challenges the common perception of link between depression and obesity
Date:11/20/2012

Hamilton, ON (November 20, 2012) Researchers at McMaster University have discovered new genetic evidence about why some people are happier than others.

McMaster scientists have uncovered evidence that the gene FTO the major genetic contributor to obesity is associated with an eight per cent reduction in the risk of depression. In other words, it's not just an obesity gene but a "happy gene" as well.

The research appears in a study published today in the journal Molecular Psychiatry. The paper was produced by senior author David Meyre, associate professor in clinical epidemiology and biostatistics at the Michael G. DeGroote School of Medicine and a Canada Research Chair in genetic epidemiology; first author Dr. Zena Samaan, assistant professor, Department of Psychiatry and Behavioural Neurosciences, and members of the Population Health Research Institute of McMaster University and Hamilton Health Sciences.

"The difference of eight per cent is modest and it won't make a big difference in the day-to-day care of patients," Meyre said. "But, we have discovered a novel molecular basis for depression."

In the past, family studies on twins, and brothers and sisters, have shown a 40 per cent genetic component in depression. However, scientific studies attempting to associate genes with depression have been "surprisingly unsuccessful" and produced no convincing evidence so far, Samaan said.

The McMaster discovery challenges the common perception of a reciprocal link between depression and obesity: That obese people become depressed because of their appearance and social and economic discrimination; depressed individuals may lead less active lifestyles and change eating habits to cope with depression that causes them to become obese.

"We set out to follow a different path, starting from the hypothesis that both depression and obesity deal with brain activity. We hypothesized that obesity genes may be linked to depression," Meyre said.

The McMaster researchers investigated the genetic and psychiatric status of patients enrolled in the EpiDREAM study led by the Population Health Research Institute, which analyzed 17,200 DNA samples from participants in 21 countries.

In these patients, they found the previously identified obesity predisposing genetic variant in FTO was associated with an eight per cent reduction in the risk of depression. They confirmed this finding by analyzing the genetic status of patients in three additional large international studies.

Meyre said the fact the obesity gene's same protective trend on depression was found in four different studies supports their conclusion. It is the "first evidence" that an FTO obesity gene is associated with protection against major depression, independent of its effect on body mass index, he said.

This is an important discovery as depression is a common disease that affects up to one in five Canadians, said Samaan.
'/>"/>

Contact: Thana Dharmarajah
dharmar@mcmaster.ca
905-525-9140
McMaster University
Source:Eurekalert

Related medicine news :

1. Obese White Women Shying Away From Colon Cancer Screening
2. Children Born to Obese Moms May Face Higher Autism Risk: Study
3. Obese Workers Health Care Costs Top Those of Smokers
4. CT Scans Deliver More Radiation to Obese People: Study
5. Weight-Loss Surgery Beat Drugs for Cutting Diabetes in Very Obese
6. Slow-growing babies more likely in normal-weight women; Less common in obese pregnancies
7. Obese Drivers Less Likely to Buckle Up: Study
8. Can Testosterone Therapy Help Obese Men Lose Weight?
9. Sooner Is Better for Controlling Obese Kids Weight: Study
10. One-Third of U.S. Homeless Population Is Obese: Study
11. Obese adolescents have heart damage
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2017)... ... June 24, 2017 , ... Dr. ... 217 Portion Road in Lake Ronkonkoma, Dental365 offers patients high-quality and affordable routine ... visits to the dentist fit into their patients’ busy lifestyles. Dental365 also gladly ...
(Date:6/23/2017)... ... 2017 , ... "The Better Care Reconciliation Act (BCRA) falls ... people with all chronic conditions, including mental illnesses, while increasing the cost of ... Care Act (ACA) requirement that insurers cover pre-existing conditions, it does not require ...
(Date:6/23/2017)... ... 2017 , ... The Military Officers Association of America (MOAA) announced its support ... retired Marine Col. Thomas G. Bowman. , Bowman currently serves as the staff director ... with the issues and challenges veterans face with the VA. Following a 30-year career ...
(Date:6/23/2017)... ... June 23, 2017 , ... Goodcents Deli Fresh Subs today announced the opening ... 4210 SW 21st St. Topeka, Kan. 66604 (near 21st and Gage). It is owned ... owns three other locations in the Topeka and Bonner Springs, Kan. area. , ...
(Date:6/23/2017)... ... June 23, 2017 , ... 21 Middle East and South ... selected 21 leaders from government, business and civil society in 11 countries across the ... this fall, engaging in a transformative exchange of knowledge and ideas with the leading ...
Breaking Medicine News(10 mins):
(Date:6/7/2017)...  Diplomat Specialty Infusion Group, a brand of Diplomat Pharmacy, Inc. ... Iowa location. The Iowa ... an ISO 7 cleanroom—the standard needed to compound intravenous (IV) nutrition ... of pollutants. "Our new cleanroom ... serve our Iowa patients," said Phil ...
(Date:6/1/2017)... 2017 Nutriceutical Holdings (NH), parent company of ... and KD Pharma Group have decided to join forces ... Pharma Group. KD Pharma Group will become the largest ... the entire company. "We believe we have ... to growing the NH companies by providing us with ...
(Date:5/26/2017)... 2017  Endo International plc (NASDAQ: ENDP ) ... will represent the Company in a fireside chat at Goldman ... June 13, 2017 at 10:40 a.m. PT / 1:40 p.m. ... Rancho Palos Verdes, CA. ... be available on the Company,s website at http://www.endo.com/investors/overview . ...
Breaking Medicine Technology: