We do not know how safe sunscreens are because they have never been tested systematically. Oxybenzone in sunscreens has been shown to be absorbed into the bloodstream in humans, and to disrupt hormones in animals. Zinc oxide and titanium dioxide appear to be safe, except that manufacturers often convert them to nanoparticles that can be inhaled.
Up to 60 percent of North American adults suffer from night-time leg cramps, a sudden painful contraction usually of the calf muscles that can last from a few seconds up to 10 minutes or more. Doctors do not know what causes most cases of leg cramps, but usually they are not caused by dehydration or lack of minerals.
Millions of North Americans take zinc lozenges to treat their colds. A study in the Archives of Internal Medicine showed that they neither shorten the cold nor lessen its symptoms. Another study from the University of Virginia showed that zinc nasal sprays do not prevent or treat the common cold.
More than 30 million adults in North America suffer from diabetes and another 85 million have pre-diabetes that is likely to become full-blown diabetes within five years. Research papers published this month suggest that people who are diabetic or likely to become diabetic should eat a very large amount of plant fiber and restrict animal products, particularly red meat and processed meats.
Sunscreens offer only partial protection from the sun. It is dangerous to expose large areas of your sun screen-coated skin to sunlight. If you want to really protect your skin from sun damage, get under a roof when the sun is out in full force. Clothes are next best, and sunscreens are a poor third.
A study from Columbia Medical School shows that a high fiber diet that is low in sugar and saturated fat can help you to fall sleep faster and sleep deeper at night. A single day of increased sugar and fat and decreased fiber intake can interfere with your sleep that night.
Diabetes can be caused by repeatedly high levels of insulin from exposing the pancreas to too much fat. Insulin-resistant diabetes can come from eating too much fat as well as from too much sugar.
Researchers followed more than 110,000 people for nine years and found that the more free sugar a person takes in, the greater the risk for heart disease. Each five percent increase in free sugar intake in a participant's daily diet resulted in a six percent higher risk of heart disease and a 10 percent higher risk of stroke. Furthermore, a higher fiber intake and replacing refined grain starch and free sugars with whole grains and non-free sugars appeared to help protect against heart attacks.
Almost 25 percent of women diagnosed with breast cancer will eventually die of that disease. Breast cancer patients who received a weekly telephone call recommending healthful lifestyles had a 35 percent greater two-year survival rate than women who were told of the benefits of a healthy lifestyle in preventing recurrences of breast cancer, but were not called weekly; and a 50 percent higher two-year survival rate than breast cancer patients who were not informed of the benefits of a healthful lifestyle.
A new review of studies on sugar-added foods shows that people who take in 10-25 percent of their calories from sugared beverages and foods suffer a 30 percent higher risk for heart attacks, compared with people who take less than ten percent of calories from added sugars.
You should never suffer from frostbite: painful freezing that can cause permanent loss of skin, and can be followed by loss of fingers, ears, toes, or even arms and legs. You get plenty of warning before your skin starts to freeze. First your fingers feel cold and then your skin starts to burn or itch.
The U.S. Centers for Disease Control (CDC) reports that 20 million new cases of venereal diseases occur every year. One out of five North American adults have a sexually transmitted disease (STD), and STDs cost the U.S. healthcare system nearly $16 billion/year. Worldwide, 31 percent of adults have genital herpes (HPV) that causes many cases of genital and oral cancers
Sleeping with the lights on or a television set on for just one night raises blood sugar, heart rate and insulin resistance, all risk factors for diabetes. Five to ten percent of the light can actually get through a closed eyelid. An elevated nightly blood sugar, called the "dawn phenomenon," increases risk for heart disease and diabetes
Researchers showed that “wearing a surgical face mask did not cause gas exchange abnormalities in healthy adults or even in adults with lung function impairment”. The authors measured carbon dioxide exchange and oxygen saturation before and after wearing a surgical mask in physicians with healthy lungs and in people with severe chronic obstructive lung disease.
A resting heart rate greater than 80 beats per minute is a strong predictor for future heart attacks, diabetes and even cancer. From 1974 to 2002, 53,322 healthy people were followed at the Cooper Clinic in Dallas, Texas. Those with a resting heart rate lower than 60 beats per minute were far less likely to suffer heart attacks or to die than those with a resting heart rate greater than 80 beats per minute
The first-line treatment for chronic constipation is to eat lots of foods that are full of fiber such as fruits and vegetables, to severely restrict processed foods, particularly those made from refined carbohydrates (bakery products, pastas and many dry breakfast cereals), and to exercise. If these lifestyle changes do not solve your problem, you may benefit temporarily by taking over-the-counter laxatives
Several recent research papers show that inflammatory types of arthritis such as rheumatoid arthritis, psoriatic arthritis and reactive arthritis may be caused by harmful bacteria in your colon. Your colon is full of more than 100 trillion bacteria. Some are good and some are bad. The good bacteria are happy with what you eat and do not try to enter your colon cells, while the harmful colon bacteria are not happy with what you eat, so they try to enter the cells lining your colon.
Many medical authors recommend treating all Lyme disease patients with 30 days of intravenous Rocephin. However, intravenous antibiotics may offer no advantage over less expensive pills (1). For many years I have been criticized for treating my Lyme disease patients who have muscle and joint pain and fatigue with 100 mg of minocycline or...
One in three North American adults have to get up to urinate more than twice a night, and a study presented at the European Society of Urology shows that the most common cause may be taking in too much salt.
The Global Council on Brain Health (GCBH) reports that supplements sold to improve your memory and to prevent dementia are a waste of your money. There is no good evidence that any over-the-counter or prescription supplement can delay the onset of dementia, or prevent, treat or reverse Alzheimer’s disease.
This year, about six million North Americans will take over-the-counter sleeping pills called melatonin. The percentage of people taking melatonin regularly has increased five-fold, from 0.4 percent in 1999 to 2.1 percent in 2017, even though the evidence that it helps people fall asleep is controversial.
Your blood pressure usually rises as soon as you start to exercise and drops a little bit while you exercise at the same intensity. However, as you continue to increase the intensity of exercise, your blood pressure usually rises higher and higher.
Pain messages are passed along nerves by a neurotransmitter called "substance P." Capsaicin, the component of chili peppers that makes them hot, blocks substance P and the resultant pain. A cream containing .025 percent capsaicin has been shown to block pain in joints, nerves and skin
With aging, a person wears away the shock-absorbing cartilage in the knees, which increases risk for pain and swelling. Many studies present overwhelming evidence that surgery for torn knee cartilage (torn meniscus) does not reduce knee pain or swelling in the long run.
A review of the world's literature shows that high-intensity exercise, particularly interval training, causes greater reduction in HbA1c in diabetics than less intense exercise. HbA1c measures cell damage from high blood sugar levels. Many studies show that increasing exercise intensity controls blood sugar in diabetics more effectively than just increasing the duration of exercise.
Many doctors recommend that every man over 40 get a blood test called Prostate Specific Antigen to check for prostate cancer. Prostate Specific Antigen is made by prostate cells and is released into the bloodstream. Large prostates have more PSA, so a rise in PSA means that the gland is enlarging rapidly, which can be a sign of cancer or that the prostate is irritated by infection.
Heart attacks are not caused by plaques making arteries too narrow. They are caused by plaques suddenly breaking off from the inner lining of a heart artery, followed by bleeding, and then a clot forms that completely blocks all blood flow to a part of the heart muscle.
Many of the more than 150 strains of Human Papilloma Viruses (HPV) are relatively harmless, but about 15 are classified as high-risk types because they can cause cancer and other health problems. A single dose of the vaccine for types 16, 18 and the other high-risk types of HPV appears to provide at least eight years of protection against these infections. These viruses are the most common cause of cancers of the cervix and other parts of the uterus, as well as of the penis, anus, throat, vagina and vulva
If your fingers turn white and start to hurt when you are out in the cold, you may have a condition called Raynaud’s phenomenon. When your body temperature starts to drop, your brain sends signals along nerves to shut blood flow to your hands and the skin turns white.