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Saliva
Saliva is the watery and usually somewhat frothy substance produced in the mouths of some animals, including humans. Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach.
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Health & Medicine News
May 19, 2026
May 19, 2026 Scientists have identified a protein that appears to put the brakes on the chronic inflammation linked to aging. Older mice with boosted levels of the protein were stronger, more energetic, and had healthier bones than untreated mice. Researchers ...
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May 19, 2026 A large European study revealed that a lower-calorie Mediterranean diet paired with exercise and coaching dramatically reduced the risk of type 2 diabetes. Participants who made these lifestyle ...
May 18, 2026 Scientists have uncovered a hidden “sugar code” on the surface of human cells that could transform how diseases are detected. Using an advanced imaging technique called Glycan Atlasing, researchers at the Max Planck Institute mapped the tiny ...
May 18, 2026 Scientists discovered that eating grapes can actually change how your skin behaves at the genetic level. After just two weeks of daily grape consumption, volunteers showed signs of improved skin protection and reduced oxidative stress from UV ...
May 18, 2026 Scientists in South Korea have discovered that a probiotic bacterium found in kimchi may help the body flush out tiny plastic particles before they can build up in organs. In lab tests, the kimchi-derived microbe clung tightly to nanoplastics even ...
May 17, 2026 Coffee may give your blood pressure a temporary jolt, but that doesn’t mean it’s secretly wrecking your heart. Researchers say caffeine can briefly raise blood pressure by stimulating your heart and tightening blood vessels, especially in people ...
May 17, 2026 Studies suggest watermelon could be a hidden powerhouse for better health. Researchers found that people who eat watermelon tend to have higher-quality diets packed with more vitamins, fiber, and antioxidants — while consuming less added sugar and ...
May 17, 2026 Scientists have discovered that the human body undergoes a dramatic internal transformation during extended fasting, with major changes appearing only after about three days without food. In a seven-day water-only fasting study, researchers tracked ...
May 17, 2026 A new nanotechnology treatment reversed Alzheimer’s symptoms in mice by restoring the brain’s natural cleanup system. The specially engineered nanoparticles helped clear toxic amyloid proteins from the brain and repair the blood-brain barrier, ...
May 17, 2026 For years, “yo-yo dieting” has been blamed for wrecking metabolism and causing lasting damage, but a major new review says the fear may be wildly overblown. After analyzing decades of studies in humans and animals, researchers found little ...
May 17, 2026 Scientists have uncovered a surprising new trick used by one of cancer’s most notorious proteins. MYC, already infamous for fueling runaway tumor growth, also appears to help cancer cells survive by repairing their damaged DNA — including damage ...
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May 16, 2026 Exercise may be training your brain just as much as your body. Researchers discovered that certain brain cells stay highly active even after a workout ends, and those lingering signals appear to help ...
May 16, 2026 Researchers have shown for the first time that malfunctioning mitochondria — the cell’s energy generators — may directly cause cognitive decline in neurodegenerative diseases. By creating a new ...
May 16, 2026 A major analysis of brain scans found that people with anxiety disorders have noticeably lower levels of choline, a nutrient crucial for healthy brain function. The strongest evidence appeared in the ...
May 16, 2026 A new study suggests microscopic particles from the gut may actively drive inflammation and chronic diseases associated with aging. Remarkably, gut ...
May 15, 2026 Scientists are uncovering a surprising link between hidden tooth infections and blood sugar problems. Deep infections around tooth roots can create chronic inflammation that spreads through the body ...
May 15, 2026 You may not need hours at the gym to boost your health after all. Researchers say just 30 minutes of high-intensity exercise per week — broken into ...
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