Food Allergies Sensitivities

Confusion Reigns About Gluten

Americans are spending $10.5 billion a year on products labeled gluten-free, but only about one-third of consumers can correctly identify what gluten is. A telephone survey of 1,012 US adults conducted for NSF International found plenty of confusion about gluten, a protein found in grains including wheat, barley and rye that patients with celiac disease must avoid. Just over a quarter (26%) mistakenly said they think products that are wheat-free are necessarily also gluten-free; 15% defined gluten as simply wheat. On the other hand, 47% erroneously said rice contains gluten and 34% said potatoes do. Asked reasons for avoiding gluten, 19% said they suffer from gluten allergy or sensitivity, 12% said going gluten-free makes them feel healthier, and 9% self-identified as having celiac disease (an autoimmune disorder that scientists say affects only about 0.75% of the population).

Q. We eat lots of figs and the brand my husband prefers has potassium...

Q. We eat lots of figs and the brand my husband prefers has potassium sorbate as a preservative. Is potassium sorbate safe?

Q. I was told that people taking statin medications for cholesterol should not consume...

Q. I was told that people taking statin medications for cholesterol should not consume grapefruit or grapefruit juice. Is this true? Is there any safe time span after taking my medication that I could have grapefruit?

Q. I was wondering if a gluten-free diet results in any deficiencies in vitamins/minerals...

Q. I was wondering if a gluten-free diet results in any deficiencies in vitamins/minerals or other essential parts of ones diet? My diet is a medical not personal choice.

The Heart-Brain Blood Supply

Just like every other organ and tissue in the body, the brain needs oxygen and nutrient-rich blood to function properly. Because the brain is so crucial to the bodys survival, it receives a disproportionate amount of blood. Though it takes up only about 2 percent of the bodys weight, the brain receives 15 to 20 percent of the bodys entire blood supply, and 25 percent of its oxygen supply. The body will deprive other parts of the body of blood to ensure that the brain has what it needs.

The heart feeds the brain by sending blood through vessels both on the surface of the brain and deep inside it. Two pairs of arteries branching out from the aorta-the internal carotid arteries and vertebral arteries-supply the brain with blood. Carotid arteries send blood to the front of the brain, and vertebral arteries send blood to the back of the brain.

Blood flow into the brains tissues is a bit different than it is in other parts of the body. Elsewhere in the body, nutrients, oxygen and waste products can move freely in and out of the capillaries. This is not true in the brain. The brain has its own checkpoint, the blood-brain barrier, a semi-permeable system that lets only certain substances pass into the brain. This barrier protects the brain against viruses, toxins, hormones, and other substances in the blood that might harm the brains delicate tissues.

Considering how essential nutrient-rich blood is to the brains function, any disruption in blood flow can pose a serious risk. A blockage in the brains blood supply from a clot either in the brain or from elsewhere in the body is called a stroke. A stroke deprives the affected part of the brain of oxygen. Without oxygen, the brains cells will die. If too many brain cells die, thought and virtually every other function will come to a halt. Two primary risk factors for stroke are high blood pressure and heart disease, which illustrates the close relationship between heart and brain health.

For more information on the connection between the heart and brain, purchase Heart-Brain Diet: Essential Nutrition for Healthy Longevity by Tufts Medical Report.

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