Ever had a very bad week, and then realised you were forgetting more things than usual? US researchers have discovered high levels of the hormone cortisol, produced in the body during stress, can have a significant effect on memory. This helps to explain why memory loss occurs during high-stress events such as surgery, a death or even major exams. The study found it takes several days of increased cortisol in the body for memory loss to take place but the forgetfulness is not permanent. (Reuters)
Women who exercise vigorously are more likely to succeed at giving up smoking and are less likely to gain weight than female smokers who do not exercise, according to a US study. Since fear of putting on weight is the primary reason for not giving up smoking, an exercise programme helps by limiting weight gain and may help smokers to deal with stress. Exercise is particularly helpful for smokers who do not wish to use nicotine replacement therapy. The researchers predict these findings will also apply to men. (Brown University News Bureau)
Pre-school children who sleep less than 10 hours in any 24-hour period are at risk of behavioural problems, such as aggression or non-compliance, according to new US research, published in the Journal of Developmental and Behavioural Paediatrics. Children who get less sleep also have a 25 per cent greater chance of developing a condition such as attention deficit disorder. However, the study of children aged between two and five did not establish whether problems occur because of lack of sleep, or whether daytime behavioural problems cause toddlers to sleep less. (Eureka)
Black or white thinkers, those who see things in an all-or-nothing manner, are at greater risk of mental health problems, say researchers at Bradford University Management Centre. Such absolutist thinkers tend to become upset and angry when their values or goals are thwarted which makes them less able to deal with problems, and may lead to longer-term physical and mental problems. Retained anger has been linked to an increased level of the stress hormone cortisol (which suppresses the immune system) and noradrenalin (which constricts the blood vessels, leading to increased blood pressure). (BBC)
Eating disorders affect one in 100 females between the ages of 15 and 25 in the Republic, medical experts estimate, and male anorexia is on the increase, accounting for five to 10 per cent of all anorexics. The key to curing eating disorders is a study of family behaviour, according to speakers at a recent conference, Eating Disorders - Working with Families, at St John of God Hospital. According to the co-ordinator of the hospital's Eating Disorders Recovery Programme, Dr Gerry Butcher, family therapy must be used to explore family dynamics and communications problems. Information and support for people with eating disorders and their families is available from Body Whys Helpline (01-2835126).