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Inflammation is known to be boosted by stressful situations. But when yoga experts were exposed to stress (such as dipping their feet in ice water,) they experienced less of an increase in their inflammatory response than yoga novices did.

Yoga focuses on deep breathing and controlling breathing, which may slow down the body's "fight or flight" response — the body's reaction to stress, Kiecolt-Glaser said.

Yoga also involves meditation, which helps people learn to pay attention to how they are feeling. So yoga experts may be more aware of their stress and better able to control their response to it.

Regular exercise could help prevent brain damage associated with neurodegenerative diseases like Alzheimer's, according to research published this month in Elsevier's journal Brain, Behavior, and Immunity. "Exercise allows the brain to rapidly produce chemicals that prevent damaging inflammation", said Professor Jean Harry, who led the study at the National Institute of Environmental Health Sciences in the United States. "This could help us develop a therapeutic approach for early intervention in preventing damage to the brain."

exercise before the onset of damage modifies the brain environment in such a way that the neurons are protected from severe insults.

exercise could be used to affect the path of many human conditions, such as neurodevelopmental disorders and neurodegenerative diseases. In addition, as a chemical model of neuronal damage was used, it also raises the possibility that exercise could offer protection against the potentially harmful effects of environmental toxins.

Stress caused by social situations, such as giving a speech or going to a job interview, can affect some people's immune system in ways that harm their health, researchers have found.The study included 124 volunteers who were purposely put into awkward social situations. Those who exhibited greater neural sensitivity to social rejection also had greater increases in inflammatory activity when exposed to social stress.

The findings provide "further evidence of how closely our mind and body are connected. We have known for a long time that social stress can 'get under the skin' to increase risk for disease, but it's been unclear exactly how these effects occur. To our knowledge, this study is the first to identify the neurocognitive pathways that might be involved in inflammatory responses to acute social stress," Slavich said.

analyzed data on more than 8,600 adults aged 20 or older who participated in the National Health and Nutrition Examination Survey conducted between 1988 and 1994.

common allergies and heart disease frequently paired up

there was a 2.6-fold increased risk of heart disease with wheezing and a 40 percent increased risk with rhinoconjunctivitis, compared to no allergies. The association was mainly seen in women younger than age of 50.

Feeling stressed? Then try savoring the scent of lemon, mango, lavender, or other fragrant plants. Scientists in Japan are reporting the first scientific evidence that inhaling certain fragrances alter gene activity and blood chemistry in ways that can reduce stress levels. 

people have inhaled the scent of certain plants since ancient times to help reduce stress, fight inflammation and depression, and induce sleep. Aromatherapy, the use of fragrant plant oils to improve mood and health, has become a popular form of alternative medicine today. And linalool is one of the most widely used substances to soothe away emotional stress.

Linalool returned stress-elevated levels of neutrophils and lymphocytes — key parts of the immune system — to near-normal levels. Inhaling linalool also reduced the activity of more than 100 genes that go into overdrive in stressful situations.