May 31, 2011

What Bugs Like

1 Are You a Mosquito Magnet?

With more than 3000 species of mosquitos, chances are you’re going to get bitten sooner or later. But what attracts the bugs to some people more than others? Scientists say it has to do with sight and smell. Mosquitos are highly visual and initially hone in on people wearing dark colors. Once they zero in on a target, the second attractor is the rate of carbon dioxide you produce. The higher your metabolic rate, the more CO2 produced. Other attractive scents include lactic acid, given off after exercise; acetone and estradiol. Mosquitos also prefer people with warmer body temperatures, making pregnant women excellent targets. It’s only female mosquitos that bite - and not for food. They eat plant nectar but use your blood to get a protein needed to develop their eggs.

More at MSNBC.msn.com | Posted 6 years ago by Melody Lesser

Previously: Zapping Mosquitos with Lasers to Control Malaria

Tags: Carbon Dioxide, Pregnancy, Mosquitos, Estradiol, Repellants, Insects, Body Temperature, Mosquito Magnet, Metabolic Rate, Why Mosquitos Bite

Comment on This | Was this Interesting? Yes! (52%) / No! (48%)

WHO Says Cancer Possible

2 Using Cell Phone May Increase Cancer Risk

Cell phones may possibly cause cancer, admits the World Health Organization (WHO), which now considers cell phones to be a possible carcinogen like engine exhaust and lead. CNN reports that the announcement today from WHO followed the decision of a team of 31 scientists from 14 countries, including the U.S. The scientists reviewed previously published studies on mobile phone safety. They uncovered enough evidence to rank mobile phones as "possibly carcinogenic to humans." The primary concern is an increase in acoustic neuroma brain cancer and glioma (tumor that starts in brain of spine) among those who use cell phones.

More at CNN | Posted 6 years ago by Peggy Rowland

Previously: Zoo Crocodile Swallows Cell Phone

Tags: Cell Phone Research, Cellphone Cancer Link, Glioma, Acoustic Neuroma Brain Cancer, Cell Phone Safety, Mobile Phone Cancer Link, Mobile Cause Cancer, Cell Phone Cancer Risk, Mobile Phone Cancer Risk, WHO Cell Phone Study

Comment on This | Was this Interesting? Yes! (47%) / No! (53%)

Reduced Libido a Symptom

3 Lack of Sleep Lowers Testosterone in Men

Low testosterone has many negative consequences for young men, with the most well known symptoms being low energy, reduced libido, poor concentration, and fatigue. Testosterone deficiency can also affect strength, muscle mass and bone density. While testosterone levels in men naturally decline 1 to 2 percent a year with aging, researchers publishing in the Journal of the American Medical Association find that cutting back on sleep can also decrease levels of the hormone by 10 to 15 percent. The effects of sleep loss were found after just one week. Researcher Eve Van Cauter PhD of the University of Chicago note that at least 15 percent of the working population in the US gets less than 5 hours of sleep per night.

More at EScience News | Posted 6 years ago by Denise Reynolds

Previously: Many Americans Too Tired for Sex, Too Much Sleep or Too Little Are Both Bad for You

Tags: Sex, Sleep, Sleep Deprivation, Sleep Disorders, Testosterone, Men, Mens Health

Comment on This | Was this Interesting? Yes! (42%) / No! (58%)

Reduces Stress Hormones

4 Beta-Blockers Up Survival with Breast Cancer

Preliminary results from two studies have shown that women on beta blockers increase the chance of disease-free survival and were also less likely to die. Beta-blockers reduce high blood pressure by inhibiting the stress hormones adrenaline and noradrenaline which were linked to tumor growth in animal studies. One study examined the medical records over 1,400 women treated for breast cancer found that 87 percent using beta-blockers metoprolol and atenolol were alive and cancer-free after three years compared to 77 percent not on them. In another study, nine percent of women on propanolol died of breast cancer after five years compared to 27 percent not taking the drug. These drugs do slow heart rate and lower blood pressure so taking them only to prevent breast cancer is not recommended.

More at Yahoo! Reuters | Posted 6 years ago by Kristie Hayes

Previously: ACE Inhibitors Increase Breast Cancer Recurrence

Tags: Adrenaline, Breast Cancer, Breast Cancer Prevention, Hypertension, Noradrenaline, Beta-Blockers and Breast Cancer Survival, Metoprolol, Atenolol, Propanolol, Stress Hormones and Tumor Growth, Disease-Free Survival with Breast Cancer

Comment on This | Was this Interesting? Yes! (50%) / No! (50%)

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