The research is the latest to find a link between owning a dog and better health.
"Unfortunately, this information will likely confuse consumers," one expert told Newsweek.
A co-author of the study told Newsweek it is possible to boost our optimism.
A recently-published study found an association between living near spaces with more plants and a lower risk of obesity and heart disease.
"This research can help provide the best care for individuals exposed to the World Trade Center disaster," an expert told Newsweek.
Diets rich in vegetables and fruits are still thought to be the healthiest.
There are more smartphones on the planet than people.
"The paleo diet could be having an adverse impact in terms of heart health," warned a scientist who carried out the research.
"This may be something people may want to consider in the decisions they are making," Lisa McKenzie, senior author of the study, said.
The study doesn't change the fact that smoking is harmful, a scientist stressed.
Scientists studied 100 people during the indulgent period spanning Thanksgiving and New Year's Day.
For the first time, we have seen the reversal of hypertrophic cardiomyopathy in two patients with Noonan syndrome.
The findings could transform how doctors prescribe aspirin.
But eating too much chocolate appeared to raise the risk of heart disease.
Most people think coconut oil is a healthy food, but experts beg to differ.
In comparison, sleeping fewer than seven hours per night did not increase the risk of mortality or heart disease.
Consuming oily fish and taking omega-3 supplements had no effect on participants' cardiovascular health, researchers found.
Guidelines for defining high blood pressure have been lowered, and millions more people will be diagnosed with the condition and recommended for treatment.
Researchers believe ex-smokers not only relapse because of the physical cravings of cigarettes, but also psychological ones.
Following these habits appeared to slash the risk of becoming obese by 75 percent, scientists found.
Scientists wanted to understand if coffee could be beneficial even in those whose bodies process it slowly.
Scientists investigated how caffeine affects the cells in the heart.
Researchers behind a study in mice believe alcohol could protect the heart because it activates an enzyme which puts the organ under a healthy level of stress and makes it stronger.
Researchers have presented a revised version of their study into the much-lauded diet.
Scientists found that different levels of sleep could affect men and women differently.
The research was important to those who felt they didn't have enough time to exercise.