To determine cholesterol levels in women, a one-time measurements alone may not be accurate. Hormonal changes that occur in the menstrual cycle was causing cholesterol go up and down.

According to a course of a study, the measurements should be performed several times to get the results really accurate. And that's to be done in a couple of times mestruasi cycle, which means eating a few months.

To be consistent and reliable results, measurements were taken at each phase of the same. According to the researchers, the easiest phase to be observed is around the beginning of the cycle either before or after menstruation.

Quoted from HealthDay, Wednesday (08/11/2010), fluctuations in cholesterol levels most visible in the vicinity of the fertile period. Right at the peak of fertility, levels of HDL (good cholesterol) to rise than in other phases.

Phase is the peak increase in the hormone estrogen. Beginning in phases, levels of LDL (bad cholesterol), triglycerides and total cholesterol decreased and reached its lowest point just before menstruation.

This was revealed in a study in the Eunice Kennedy Shriver National Institute of Child Health and Human Development. Results were published recently in the latest issue of the Journal of Clinical Endocrinology and Metabolism.

This examination involves a number of female participants, with only 5 percent who have total cholesterol levels above 200 mg / dL. However, in 14 tests done at random times, 19.7 percent of participants reached these levels in at least 1 times the examination.

Over a decade, so people believe the human brain grows optimally at an early age and not too hopeful on human brain development in adolescence. But now researchers found the opposite.

Most people think he will have a maturity of thought when she was 21 years. But today it is not proven, because the brain continues to grow and reach maturity when a person aged 40 years.

The result of brain scan studies have shown that the prefrontal cortex, the brain area right behind the forehead will change shape and grow until he was aged in their 30s to 40s.

This result is very significant, because the prefrontal cortex is the main area of the brain and is often regarded as the key to the formation of a human. This area relates to decision-making, social interaction and most of the other personality traits.

"For about 10 years ago, we many assume that the human brain stops grow at an early age. But now we understand and have a new truth that the human brain continues to grow for decades," said Professor Sarah-Jayne Blakemore, a neurologist at the University College London, as quoted by the Telegraph, on Monday (12/20/2010).

Professor Sarah tells the brain areas whose development is the long run the most front part of the brain that is the right prefrontal cortex. This part of the brain involved in higher cognitive functions related to the understanding of other people.

"This brain area started to develop in early childhood, then having the reorganization in late adolescence dna growing well until someone in their 30s and 40s," he said.