Weekly Health Quiz: Hydrogen-Rich Water's Benefits, Secrets of Dark Chocolate, and How to Exercise

1 What type of water should be used with a hydrogen-generating tablet?

• Ice-cold water
• Lukewarm water
• Sparkling water
• Room-temperature water

  The tablet should dissolve fully in room-temperature water, and the cloudy water should be consumed immediately before the hydrogen escapes. Learn more.

2 What is the primary building block of cell membranes?

• Fats

  Fats, also called lipids, form the structure of cell membranes, making the type of fat you eat important for health. Learn more.

• Proteins
• Minerals
• Carbohydrates

3 What does glucagon-like peptide-1 (GLP-1) signal to your brain after eating?

• Hunger
• Fullness

  GLP-1 helps you feel satisfied sooner, slows food movement through the digestive tract, and supports healthy blood sugar control. Learn more.

• Thirst
• Stress

4 Why does the format of a supplement matter?

• It determines the product’s pricing
• It changes the size of the package
• It removes the need for directions
• It affects how consistently people take it

  A convenient format reduces counting, swallowing, packing, and scheduling problems that often cause people to miss doses. Learn more.

5 During which peak hours should you avoid direct sunlight if you consume plenty of seed oils?

• 6 a.m. to 9 a.m.
• 8 a.m. to 11 a.m.
• 10 a.m. to 4 p.m.

  Sunlight is strongest from 10 a.m. to 4 p.m. so direct exposure should be limited until seed oils have been reduced for at least six months. Learn more.

• 4 p.m. to 7 p.m.

6 Which gland plays an important role in immune system development?

• Thymus gland

  The thymus helps develop the immune system, and its decline with age is often linked to weaker immune responses. Learn more.

• Thyroid gland
• Adrenal gland
• Pituitary gland

7 Which often-discarded food may help protect against microplastic damage?

• Apple peel
• Grape skin
• White citrus pith

  White citrus pith contains diosmin, a flavonoid that may strengthen antioxidant defenses and support working and long-term memory. Learn more.

• Watermelon rind

8 Where is krill oil harvested from?

• Arctic Ocean
• Antarctic waters

  Krill oil comes from tiny shrimp-like creatures that live in the cold waters around Antarctica. Learn more.

• Mediterranean Sea
• Gulf of Mexico

9 What is the complete loss of smell called?

• Dysgeusia
• Hyperosmia
• Parosmia
• Anosmia

  Anosmia is the complete loss of smell and affects about 5% of adults. It is one form of olfactory dysfunction, which also includes reduced or distorted smell. Learn more.

10 Which cocoa compounds may support insulin sensitivity and blood vessel function?

• Tannins
• Anthocyanins
• Carotenoids
• Flavanols

  Cocoa flavanols have been linked to better insulin sensitivity, healthier blood vessels, and lower inflammation. Learn more.

11 What dimethyl sulfoxide (DMSO) concentration is recommended when beginning topical use?

• 30%
• 50%
• 70%

  A 70% DMSO solution may be diluted evenly with water at first, then increased gradually if no skin irritation develops. Learn more.

• 100%

12 What is the medical term for low blood pressure?

• Hypotension

  Hypotension can reduce blood flow to vital organs and prevent tissues from receiving enough oxygen and nutrients. Learn more.

• Hypertension
• Atherosclerosis
• Arrhythmia

13 Which factor affected how strongly the heart responded after a marathon?

• Shoe brand
• Running surface
• Clothing choice
• Training status

  Fitness and training helped explain why runners experienced different levels of heart stress after completing the same distance. Learn more.

14 What has one of the strongest effects on your metabolic health?

• What you eat

  Whole foods provide nutrients that support steady energy, while ultraprocessed foods can promote weight gain and insulin problems. Learn more.

• Where you buy your food
• When you wake up
• How often you travel

15 What slang describes attention problems linked to heavy short-form video use?

• Digital fatigue
• Screen fog
• Attention drift
• Brain rot

  Heavy short-form video use can train the brain to expect constant novelty and quick rewards, making sustained focus and self-control harder. Learn more.

16 Despite sleeping better, what declined the morning after participants took quetiapine?

• Blood pressure and heart rate
• Memory and language skills
• Alertness and driving performance

  In the Flinders University study, quetiapine improved some sleep measurements but led to slower reaction times and poorer simulated driving performance the next morning. Learn more.

• Appetite and physical strength

17 At what temperature does liquid crystalline water make up the largest share of water?

• 0°C
• 4°C

  Liquid crystalline water makes up the biggest percentage of water at 4°C, the same temperature where water is most dense. Learn more.

• 10°C
• 25°C

18 What are the chances of surviving cardiopulmonary resuscitation (CPR) done inside a hospital?

• About 8% to 10%
• About 50% to 55%
• About 35% to 40%
• About 23% to 25%

  CPR works about 23% to 25% of the time in a hospital, but only about 10% of the time when done outside. Learn more.

19 Besides fiber intake, what may influence improvements in blood sugar control?

• Meal size
• Timing

  Making healthy dietary changes early may lead to greater and longer-lasting improvements in blood sugar control. Learn more.

• Water temperature
• Sleep position

20 What forms of magnesium may help improve symptoms of depression?

• Magnesium citrate and oxide
• Magnesium sulfate and chloride
• Magnesium glycinate and malate

  Magnesium glycinate and magnesium malate are well-absorbed and generally gentle on the digestive system. Learn more.

• Magnesium carbonate and hydroxide

21 What condition can develop after several nights of too little sleep?

• Insulin resistance

  Sleeping fewer than six hours a night can impair glucose control, and healthy adults developed glucose intolerance after only four days of severe sleep loss. Learn more.

• Iron deficiency
• Low blood pressure
• Vitamin D deficiency