ScienceDirect answers to clear questions, with useful examples and context.
438 articlesYes, frozen vegetables are healthy. In most nutritional respects they match or beat fresh produce sold in supermarkets, because they are blanched and frozen within hours of harvest, which locks in vitamins, minerals and fiber before the…
Let's find outYes, eggs are good for anemia, but as a supporting food rather than a cure.
Let's find outYes, electrolytes are good for you during pregnancy, and your needs for sodium, potassium, magnesium, and calcium rise by roughly 10 to 30 percent because plasma volume expands 40 to 50 percent and the placenta and fetus draw steadily on…
Let's find outYes, farts are flammable. Human flatus contains hydrogen and methane in concentrations that can ignite when mixed with oxygen, typically above roughly 4 percent hydrogen by volume in air.
Let's find outFilipinos are classified as Asian, not Pacific Islander, under every major racial and ethnic taxonomy used in the United States and internationally.
Let's find outYes, carbs are good for building muscle, but mostly indirectly: they fuel the training that triggers growth, spare protein from being burned for energy, and support the hormonal and cellular conditions under which muscle protein synthesis…
Let's find outYes, egg whites are dairy free. Egg whites contain zero milk, lactose, casein, or whey, and they are classified as a standalone allergen category from milk under both US and international labeling law.
Let's find outMost decongestants are not considered safe for routine use during pregnancy, and the risk depends heavily on the route: oral pseudoephedrine and phenylephrine carry the most concern, while nasal sprays and saline are generally preferred…
Let's find outMildly crooked toes are normal and extremely common: roughly 1 in 3 adults has at least one toe that deviates from straight, and most of these curves are harmless variants present since childhood or caused by years of narrow shoes.
Let's find outCollagen peptides are generally considered safe in pregnancy at food-level doses of 2.5 to 10 grams per day, and no major health authority has issued a pregnancy warning against them.
Let's find outYes, dates are a real but modest source of iron, not a powerhouse.
Let's find outYes, decline sit-ups are good—but conditionally. They are an effective, time-efficient way to load the rectus abdominis through a longer range of motion than a flat sit-up, increasing the demand on the upper and mid-abs by roughly 20 to 40…
Let's find outYes, crabapples are actually apples. Every crabapple is a true apple in the botanical sense: both belong to the genus *Malus* in the rose family, and the crabapple is simply any *Malus* species or variety that produces small fruit,…
Let's find outYes, cherries are generally safe and potentially beneficial in chronic kidney disease, but only within a portion that respects your potassium and fluid limits.
Let's find outYes, chia seeds are generally good for gout and uric acid control, with one condition: you must hydrate them fully and count their calories.
Let's find outMost circus animals are not treated well, and the modern traveling circus is the worst-case setting in the industry.
Let's find outAre deer blocks good for deer and are they safe? The short answer is that deer blocks are conditionally useful, not universally good.
Let's find outAre cats selfish? No — not in any scientifically meaningful sense. What looks like selfishness is a mismatch between feline social evolution and human expectations.
Let's find outNo, blue-tailed skinks are not poisonous. They have no venom glands, no toxin-producing skin, and no bite capable of delivering poison to a human. The bright blue tail is a visual decoy, not a chemical weapon.
Let's find outAre cortisone shots bad? No — for most people they are safe and effective when used correctly.
Let's find outClub crackers are not a health food, but "healthy" depends entirely on dose and context: a standard serving of about 5 crackers (16 g) delivers roughly 80 calories, 4 g of fat, 2 g of protein, and a modest 160-190 mg of sodium, which fits…
Let's find outAre Cape Buffalo endangered? No. The Cape buffalo (*Syncerus caffer caffer*) is classified as Least Concern on the IUCN Red List, with a continental population estimated at roughly 830,000 to 900,000 mature animals.
Let's find outYes, corn tortillas are gluten free in their traditional form, provided they are made from 100 percent corn masa and have not been contaminated by wheat flour during milling, pressing, or cooking.
Let's find outAre Bulldogs lazy? Yes, on average, but not because they are stubborn or unmotivated. The typical adult Bulldog sleeps 12 to 14 hours per day and naps another 2 to 4, roughly 40 percent more rest than a comparably sized herding breed.
Let's find outYes, chickens are considered dinosaurs by modern evolutionary biology, because birds are the only surviving lineage of theropod dinosaurs.
Let's find outBlue Jays are not endangered. They are classified as a species of least concern by the IUCN, with an estimated global breeding population of roughly 14 million and a stable-to-increasing trend across most of their range.
Let's find outNo, blue eyes are not dominant. Blue eye color is recessive, meaning a child needs two copies of the low-melanin version of the OCA2 regulatory region — one from each parent — to end up with blue irises.
Let's find outYes, beech mushrooms (Hypsizygus tessellatus, sold as buna-shimeji or hon-shimeji) are good for you.
Let's find outNo, beetles are not blind. Almost all of the roughly 400,000 described beetle species have functional eyes, and most are compound eyes made of hundreds to thousands of individual lenses called ommatidia.
Let's find outAre bullet ants deadly? No — there is no documented record of a human death caused solely by a bullet ant sting.
Let's find outNo essential oil is proven safe for routine use on or around reptiles, and several common ones are actively dangerous.
Let's find outThe goals of antiepileptic therapy are, in order: complete seizure freedom with no unacceptable adverse effects, protection against seizure-related injury and death (including sudden unexpected death in epilepsy, or SUDEP), restoration of…
Let's find outAre burpees the best exercise? No single movement is best for everyone, but burpees are arguably the most metabolically efficient bodyweight exercise per minute, burning roughly 10 to 15 calories per minute at a moderate pace of 8 to 12…
Let's find outAutoimmune diseases are partly genetic but never purely inherited.
Let's find outBeans are not a direct trigger of acid reflux for most people, but they are a common indirect one.
Let's find outNo, black bears are not territorial. They do not defend exclusive home ranges against intruders. Instead, black bears share overlapping home ranges and rely on a dominance hierarchy and scent-based time-sharing to avoid conflict.
Let's find outYes, dog breeds are banned in the United States, but no federal law bans any breed.
Let's find outAnimal respiratory systems are the biological equipment that moves oxygen from the environment into the body and carbon dioxide out, and they take four main forms: gills in water breathers, lungs in air breathers, tracheal tubes in…
Let's find outAttachment styles are not permanent. Longitudinal research shows roughly 60 to 70 percent of adults keep the same attachment style over years, while about 30 to 40 percent shift at least once, usually toward security.
Let's find outAntipsychotics for depression refers to using a second-generation antipsychotic, usually at low dose, as an add-on to an antidepressant when standard treatment alone has not worked.
Let's find outYes, almonds are low in carbs. A 1-ounce serving (about 23 kernels) contains 6.1 grams of total carbohydrate, of which 3.5 grams are fiber, leaving roughly 2.6 grams of net carbs.
Let's find outAmerican bullfrogs are not poisonous and are not dangerous to humans in any life stage. Their skin carries no toxins, they have no venom glands, and they cannot bite hard enough to break skin.
Let's find outAntibiotics don't treat yeast infections because they target bacteria, not fungi.
Let's find outAntiplatelet medications are drugs that stop platelets from clumping together, preventing the clots that cause heart attacks and ischemic strokes.
Let's find outThe anatomy of body cavities describes two main compartments — the dorsal cavity (cranial and spinal) and the ventral cavity (thoracic, abdominal, and pelvic) — that house and protect the body's organs.
Let's find outYes, white tigers are effectively extinct in the wild, and the deeper truth is that the animal most people picture is not a separate endangered species at all.
Let's find outMost women reach full physical maturity around age 18, but that single number hides the real answer.
Let's find outThe ash tree root system is a shallow, wide-spreading network of woody roots and fine feeder roots that typically occupies the top 18 to 24 inches of soil and extends 1.5 to 3 times the radius of the canopy, with most structural roots…
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