Surviving Summer: the Good, the Bad and the Ugly

Summer is the hottest of the four seasons. At the summer solstice, which occurs on June 21st in the Northern Hemisphere and December 22nd in the Southern Hemisphere (when it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere and vice versa), the days are longest and the nights are shortest. Summer is a great time to spend time outdoors and practice a healthy lifestyle. There are plenty of chances to eat fresh fruits and vegetables, get some sun, and get in shape, whether it be by playing a sport, exercising or just working around the yard.

Healthy lifestyle

Sun Exposure, Vitamin D Can Affect Breakdown of Medicines

Genetic variation has been though to be responsible for the differences between people to metabolize certain drugs. The results of a recent study from the Karolinska Institutet in Sweden suggest that it may be even more complicated. Swedish reserchers have found that the body’s ability to break down medicines may be closely related to sunlight exposure and vitamin D, and thus may vary with the seasons. The study, published in the journal Drug Metabolism & Disposition, offers a completely new model to explain individual differences in the effects of drugs [1].

Sunlight can influence the breakdown of medicines in the body

Vitamin D Regulates Genes Associated with Susceptibility to Autoimmune Diseases

Vitamin D is, at this point, probably one of the trendiest vitamins around. Everyone suddenly seems to be getting their vitamin D level tested (specifically vitamin D3 or 25(OH)D, also called calcidiol) and, when levels are found to be deficient, taking supplements. In November 2010, the Institute of Medicine tripled its daily recommendations for vitamin D from 200 International Units to 600 [1]. Severe vitamin D deficiency causes rickets, which leads to a softening and weakening of the bones, so milk has been fortified with vitamin D to prevent rickets. Less dramatic vitamin D deficiency has been implicated in ailments ranging from cancer to heart disease to schizophrenia to autoimmune diseases to colds and the flu. But how does vitamin D act in the body — how can it contribute to so many different physiological processes?

Functions of vitamin D

Vitamin C Improves the Mood of Acutely Hospitalized Patients

ResearchBlogging.org

According to new research, supplementation with vitamin C could improve the emotional state of hospitalized patients [1]. The study, published in the journal Nutrition, demonstrates that increasing vitamin C levels in acutely hospitalized patients results in a rapid, statistically and clinically significant improvement in mood state.

Sixty percent of patients in hospitals have extremely low levels of vitamin C. Their plasma levels are less than half that of normal levels; one in five patients have levels so low that they have scurvy, a condition characterized by general weakness, anemia, gum disease and skin hemorrhages as a result of vitamin C deficiency. But rather than giving them sauerkraut, like eighteenth century sailors received to combat scurvy on long voyages, Dr. John Hoffer at the Jewish General Hospital in Montreal gave them vitamin C supplements. He found that their moods improved significantly.

Health Highlights – August 7th, 2009

Health Highlights is a biweekly summary of particularly interesting articles from credible sources of health and medical information that we follow & read. For a complete list of recommeded sources, see our links page.

Health Highlights

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