Weekly Health Quiz: A Surprising Cancer Cause, Krill Oil for Arthritis, and Staying Mentally Fit

1 What can krill oil improve in older adults?

• Grip strength

  According to a 2026 study, older adults over 65 who took krill oil for six months improved their grip strength, knee strength, and muscle thickness. Learn more.

• Jaw strength
• Eyesight
• Hair growth

2 What is the generic name of Pepcid?

• Omeprazole
• Ranitidine
• Famotidine

  Pepcid is the brand name for famotidine, an H2 blocker used for heartburn relief that may also affect serotonin activity. Learn more.

• Cimetidine

3 What gradually breaks down in osteoarthritis?

• Bone cells
• Muscle fibers
• Spinal fluid
• Cartilage

  Osteoarthritis develops when cartilage slowly breaks down, leading to joint pain, stiffness, swelling, and reduced mobility. Learn more.

4 Which warning sign may point to sudden vision loss?

• Mild eye itching after screen use
• Better night vision than usual
• Clearer colors in bright light
• Sudden blurriness or dark spots

  Sudden blurriness, dark spots, lost visual field, or new color problems may signal optic nerve damage and should be taken seriously. Learn more.

5 What does lupus cause the immune system to do?

• Attack the body’s tissues, including skin, joints, kidneys, and heart

  Lupus is an autoimmune disease where the immune system attacks body tissues. It most often affects women ages 15 to 44. Learn more.

• Support stronger bones, muscles, nerves, and healthy blood flow
• Improve daily energy, digestion, sleep, and normal recovery
• Oxidize the skin, joints, kidneys, and heart

6 Why is jiaogulan called the “immortality herb”?

• It is known for supporting calm energy and balance
• It has a reputation for promoting longevity and vitality

  Jiaogulan is called the “immortality herb” because it has long been linked to longevity, vitality, and disease resistance in traditional use. Learn more.

• It is traditionally used to replace daily movement habits
• It is valued to help the body handle stress better

7 Why can some cancer treatments trigger autoimmune symptoms?

• Tumors stop the immune system from working
• Healthy tissue becomes invisible to immune cells
• Immune “off switches” are removed during treatment

  Some cancer treatments remove immune brakes to fight tumors better, but that can also make immune cells more likely to attack healthy tissue. Learn more.

• Cancer drugs block all inflammation permanently

8 Why is krill oil more bioavailable than fish oil?

• Krill oil does not contain omega-3 fats
• Fish oil doesn't absorb better because of triglycerides
• Krill oil works only because it has more EPA and DHA
• Its omega-3s are bound to phospholipids

  Krill oil binds eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) to phospholipids, making them easier for cells to absorb and use. Learn more.

9 Besides vitamin C, what beneficial compounds are found in lemons?

• Citronella oil
• Flavonoids

  Lemons contain flavonoids such as hesperidin and limonoids, which may offer antioxidant, anti-inflammatory, and heart-supportive benefits. Learn more.

• Fructolipids
• Stevia-like sweeteners

10 What can ultraprocessed foods disrupt in the brain?

• Hair growth signals
• Bone repair timing
• Stable cellular energy

  Ultraprocessed foods may impair cellular energy production, blood sugar control, and inflammation, which can weaken focus and mental stamina. Learn more.

• Tooth enamel strength

11 Why is Dimethyl sulfoxide (DMSO) called an umbrella remedy?

• It may support many different health conditions

  DMSO is called an umbrella remedy because it may support many issues through effects on inflammation, circulation, and damaged cells. Learn more.

• It works for various skin irritations and conditions
• It blocks every medication from working
• It treats only one type of infection

12 How does potassium help lower blood pressure?

• Sodium stays trapped in the bloodstream
• Blood pressure hormones rise quickly
• Kidney signals slow down completely
• Excess sodium is removed more easily

  Potassium helps the body remove excess sodium, supports early kidney responses, and reduces hormones that can raise blood pressure. Learn more.

13 What did Robert F. Kennedy Jr. announce about psychiatric medications?

• A plan to increase SSRI use in children
• A federal effort to reduce inappropriate SSRI prescribing

  The effort focuses on safer SSRI prescribing, proper tapering support, and more non-pharmaceutical mental health options. Learn more.

• A ban on all non-drug mental health care
• A rule ending provider training for tapering

14 How do people with prediabetes benefit from high-intensity interval training (HIIT)?

• Insulin sensitivity and glucose processing improve

  High-intensity interval training (HIIT) may improve insulin sensitivity, glucose processing, and mitochondrial energy production in people with prediabetes. Learn more.

• Weight loss becomes the only health benefit
• Blood pressure stabilizes during every workout
• Mitochondria produce less cellular energy

15 What certification can help confirm beef is really grass fed?

• United States Department of Agriculture (USDA) organic seal
• American Grassfed Association (AGA) certification

  American Grassfed Association (AGA) certification, “100% grass fed” and “grass-finished” wording help verify beef was not grain-finished. Learn more.

• Generally Recognized as Safe (GRAS) label
• Good Manufacturing Practice (GMP) certification

16 Is more exercise always better for brain health?

• Yes, nonstop intense workouts always protect the brain
• It depends, but recovery is less important than intensity
• A semi-sedentary life is best if weight stays normal
• No, too much intense exercise without recovery can backfire

  Excessive intensity can raise cortisol, disrupt sleep, and strain the nervous system. Moderate training with recovery better supports long-term brain health. Learn more.

17 How can someone find their carb-response type?

• Try all carbohydrates for one week
• Write down on a journal based on hunger after meals
• Wear a continuous glucose monitor for a few weeks

  Wearing a continuous glucose monitor for two to four weeks can show which carb foods cause the biggest blood sugar spikes, helping identify carb-response type. Learn more.

• Check weight changes after one meal

18 What is the best way to take a nap?

• Longer than 1 hour after dinner
• Under 30 minutes and before 2 p.m.

  Short naps under 30 minutes before 2 p.m. may support alertness and memory while lowering the risk of grogginess or sleep inertia. Learn more.

• Anytime during the late evening
• Until deep sleep starts fully

19 Which food is a good source of choline?

• White rice
• Apple juice
• Canola oil
• Pastured eggs

  Pastured egg yolks provide choline, which the body uses to build phospholipids that support cell and mitochondrial membrane repair. Learn more.

20 What are chelating agents designed to do?

• Bind to toxic metals so they can be removed

  Chelating agents attach to toxic metals like mercury or lead. Once bound, these metals can be safely carried out of the body through urine or stool. Learn more.

• Increase blood sugar levels
• Build protein in muscles
• Improve digestion only

21 Which antioxidant system helps the body neutralize oxidative stress?

• Glutathione

  Glutathione is an internal antioxidant system that helps neutralize oxidative stress, protect cells, and support repair when cellular energy is strong. Learn more.

• Cortisol
• Glucose
• Histamine