Weekly Health Quiz: Secrets Behind Supplements, an Alternative to Artificial Tears, and Eccentric Exercises

1 Which factor can weaken sensitive supplement ingredients over time?

• Carbon dioxide
• Silica
• Plastic
• Oxygen

  Oxygen can slowly weaken sensitive ingredients. Opening the same container every day lets fresh air back in and may reduce potency over time. Learn more.

2 Which “clean” food can still be a hidden source of excess linoleic acid (LA)?

• White rice
• Grass fed beef
• Avocado oil

  Avocado oil may seem like a cleaner choice, but it can still contain high levels of linoleic acid (LA) or be mixed with vegetable oils. That makes excess intake easier to miss. Learn more.

• Raw milk

3 Which packaging format helps protect sensitive powders from oxygen and moisture?

• Clear plastic bottles with airtight caps
• Heavy glass jars opened every day
• Plain zipper bags without added barriers
• Aluminum-foil packs with oxygen control

  Aluminum-foil packs help keep oxygen and moisture away from sensitive powders. Oxygen absorbers and desiccants add more protection. Learn more.

4 What may help explain Manuka honey’s effects on irritated eyes?

• Synthetic preservatives and thicker texture for more thorough soothing
• Natural antimicrobial compounds and high levels of polyphenols

  Manuka honey contains antimicrobial compounds and polyphenols, which may help ease inflammation and support repair on the irritated surface of the eye. Learn more.

• Added saline and stronger tear evaporation
• Mineral oils that block all inflammation

5 Among the activities listed, what job does the liver not handle?

• Production of bile for fat digestion
• Storage of vitamins and minerals
• Elimination of carbon dioxide

  The liver helps with detoxification, bile production, nutrient storage, protein production, and hormone regulation. Carbon dioxide is removed mainly through breathing, not liver function. Learn more.

• Regulation of hormones in circulation

6 Which diabetes medication has long been paired with exercise since the early 2000s?

• Metformin

  Since 2006, clinical guidelines have supported pairing metformin with exercise for Type 2 diabetes care. Researchers are now questioning whether that combination delivers the expected benefits. Learn more.

• Insulin glargine
• Glipizide
• Semaglutide

7 Which delivery method uses a protective shell that releases a compound later in digestion?

• Lipid nanoparticle delivery
• Microencapsulation

  Microencapsulation surrounds a compound with a protective coating. The coating helps shield it from stomach acid and allows more of it to reach the right place intact. Learn more.

• Standard capsule filling
• Powder blending

8 As widely used as statins are, what lesser-known side effect should people be aware of?

• Sharper vision
• Lower blood pressure
• Slower muscle recovery
• Muscle weakness

  Statins can lower low-density lipoprotein (LDL) cholesterol, but they do not address every driver of artery damage. Muscle weakness may affect 10% to 15% of users. Learn more.

9 How many Americans are now living with Alzheimer’s disease?

• More than 3 million
• More than 7 million

  More than 7 million Americans are now living with Alzheimer’s disease, a condition marked by worsening memory loss, confusion, and behavior changes over time. Learn more.

• About 10 million
• Nearly 13 million

10 What does creatine turn into to help restore adenosine triphosphate (ATP)?

• Phosphocreatine

  Creatine converts into phosphocreatine, which helps restore ATP during high demand. That reserve support matters for muscles, the heart, the brain, and repair processes. Learn more.

• Glycogen
• Creatinine
• Lactic acid

11 How is hepatitis B usually transmitted?

• Through casual contact, such as hugging or sharing utensils
• Through blood-to-blood contact, sex, shared needles, or childbirth

  Hepatitis B spreads when infected blood or body fluids enter another person’s bloodstream. Common routes include sex, shared or contaminated needles, needle stick injuries, and childbirth. Learn more.

• Through airborne droplets from coughing or sneezing
• Through brief skin contact with someone who has symptoms

12 What food is a natural source of vitamin K2?

• Soy milk
• Olive oil
• Apple slices
• Gouda cheese

  Vitamin K2 helps activate proteins that guide calcium into bones and away from arteries. Natural sources include natto, hard cheeses like Gouda, egg yolks, and organ meats. Learn more.

13 Beyond muscle strength, what else can eccentric exercise help improve?

• Skin hydration
• Night vision
• Cognitive function

  Eccentric movements require steady feedback between the brain and muscles. That controlled lowering may support balance, mobility, memory, focus, and processing speed. Learn more.

• Food cravings

14 What is insulin’s primary job in the body?

• Help the body’s cells to take in glucose

  Insulin helps move glucose from the blood into the cells, where glucose is used for energy. Without enough insulin action, glucose stays in the bloodstream instead. Learn more.

• Break down proteins into amino acids
• Remove carbon dioxide from the blood
• Store oxygen inside muscle tissue

15 Which essential oil should be avoided before going to bed?

• Rosemary

  Rosemary is considered more energizing than calming, so it may make bedtime relaxation harder. Gentler options, such as lavender, vetiver, or marjoram, are better suited for sleep support. Learn more.

• Lavender
• Vetiver
• Marjoram

16 Which warning sign may suggest metabolic disease is progressing?

• Lower fasting blood sugar
• Rising waist circumference

  A growing waistline can be one sign of deeper metabolic stress. Rising blood sugar, worsening blood pressure, fatigue, swelling, and reduced exercise tolerance may also appear. Learn more.

• Stronger exercise tolerance
• Improved kidney function

17 What kind of diet was built around fresh, unprocessed foods and seasonal produce?

• Ketogenic diet
• Liquid diet
• Vegetarian diet
• Ancestral diet

  Ancestral diets centered on real foods from farms, gardens, and animals. Meals included nutrient-rich foods without additives or vegetable oils, supporting digestion, immunity, and long-term health. Learn more.

18 What type of thinking can make it harder to fall asleep?

• Creative thinking
• Random thinking
• Sequential thinking

  Sequential thinking can keep one thought leading into the next, creating a loop-like mental pattern. That makes it harder for the brain to shift into sleep-friendly, dream-like thoughts. Learn more.

• Dream-like thinking

19 Which action can help lower the chance of skin cancer becoming harder to treat?

• Waiting for dark marks to fade on their own
• Covering changing spots with all-natural products
• Checking only areas that get direct sunlight
• Having a doctor check dark marks that start changing

  A dark mark that grows, itches, bleeds, crusts, or changes color should be checked promptly. Early action helps catch possible skin problems before they become more serious. Learn more.

20 What type of carbohydrate was linked to poorer aging outcomes?

• Refined carbohydrates

  Refined carbohydrates, such as white bread, sugary snacks, and processed grains, were linked to a lower chance of aging well, even after factors like exercise, weight, smoking, and medication use were considered. Learn more.

• Rice fried in tallow
• Legumes
• Whole grains

21 What is one natural way to raise nicotinamide adenine dinucleotide (NAD) levels?

• Taking high-dose niacin daily
• Time-restricted eating

  Time-restricted eating, intense exercise, and sauna therapy can help activate nicotinamide phosphoribosyltransferase (NAMPT), which supports the body’s own NAD levels. Learn more.

• Taking extended naps
• Replacing meals with protein shakes