1 What impact can larger indoor plants have on building space?
- They trap heat near the walls
- Drys the air to reduce humidity.
- You can make your room cooler
Large plant systems release water vapor into the air, improving humidity and making indoor spaces cooler and more comfortable. Learn more.
- They block external light
2 What conditions can cause oxygenation imbalances that are associated with heart problems in young women?
- anemia
Anemia can help create an imbalance that reduces oxygen delivery and puts strain on the heart, especially during times of illness or physical stress. Learn more.
- arthritis
- migraine
- eczema
3 In what ways does molecular hydrogen help protect mitochondria from oxidative stress?
- By thickening the cell membrane
- By helping restore cellular energy
Molecular hydrogen can support mitochondrial function by reducing oxidative stress, which can help cells produce energy more effectively. Learn more.
- By blocking all fatigue signals
- By raising your body temperature
4 What best explains the long-term increase in heart disease in the 20th century?
- Seed oils became common first
Heart disease increased in the years after seed oils became common in the food supply, consistent with the slow buildup of plaque inside blood vessels over time. Learn more.
- My exercise habits changed overnight
- Doctors catch more cases earlier
- Smoking has ended in most homes.
5 What is the biggest reason why healthcare spending continues to increase?
- More health services are used.
The biggest factor is increased use of medical services. Daily choices about food, sleep, and activity also determine how often care is needed. Learn more.
- Doctors are working fewer hours
- Few people have insurance
- The hospital building is old.
6 What type of diet can shorten Peakspan?
- high protein diet
- low carb diet
Eating low carbohydrates can limit your body’s main source of energy. The guidelines here suggest about 250 grams of healthy carbohydrates each day, adjusted higher for active people. Learn more.
- fruit based diet
- low salt diet
Test your knowledge
Master Level Quiz
1 When was DMSO (dimethyl sulfoxide) first discovered?
- 1960s
Dimethyl sulfoxide (DMSO) was discovered in the 1960s and quickly gained significant attention due to its reported use in several difficult-to-treat conditions. Learn more.
- 1970s
- 1980s
- 1990s
2 Which of the following does not worsen breathing problems such as asthma?
- cigarette smoke
- household mold
- rodent exposure
- steam coming from diffuser
Smoking, mold and rodents can irritate the lungs or cause allergic reactions, but diffuser vapor has no negative health effects. Learn more.
3 What are the active compounds in apple cider vinegar called?
- acetic acid
Acetic acid may improve insulin sensitivity and help your body burn more glucose after a meal, which may lower the amount of fat stored. Learn more.
- malic enzyme
- lactic acid fiber
- citric acid extract
4 What corticosteroids were used to treat inflammatory and autoimmune diseases in the 1950s?
- Penicillin and streptomycin antibiotics
- Insulin and metformin blood sugar medications
- Prednisone and hydrocortisone corticosteroids
Corticosteroids help manage autoimmune and inflammatory diseases such as lupus and multiple sclerosis by reducing inflammation and calming immune overactivity. Learn more.
- Aspirin and acetaminophen pain relievers
5 What can lead to treatment not addressing the actual cause of a heart attack?
- Delayed transport to hospital
- Misclassification of arterial rupture
Mislabeling arterial ruptures as plaque-related events can lead to incorrect treatment, follow-up, and prevention plans. Learn more.
- low blood sugar levels
- mild chest discomfort
6 Which of the following is not a type of hernia surgery?
- open surgery
- minimally invasive surgery
- laparoscopic repair
- surgical mesh
Mesh is a material used in some non-surgical repairs. The two main approaches are open surgery, including laparoscopic methods, and minimally invasive surgery. Learn more.
7 What’s this unusually named poop that could be a sign of excellent gut health?
- snake poop
- pebble poop
- ghost poop
These bowel movements leave no residue when wiped or settled in the toilet, which can indicate efficient digestion and good nutritional processing. Learn more.
- sticky poop
8 Which of the following is not true about hydrogen-rich water?
- Improves exercise endurance and reduces fatigue.
- Only thirst is quenched
Hydrogen-rich water supports endurance, reduces muscle fatigue indicators such as lactic acid, and helps you feel less physically stressed. Learn more.
- Increased lactic acid during exercise
- Makes fatigue worse
9 Does the discovery of toxic airborne chemicals in rural Oklahoma prove that such chemicals are not limited to industrial areas?
- Polyvinyl Flame Dust (PDV)
- brominated metal fumes
- Nitrate-based soot (NBS)
- Medium chain chlorinated paraffin (MCCP)
Medium-chain chlorinated paraffin (MCCP) has been detected in rural air, suggesting the chemical is more widespread than expected and raising concerns about hormonal disruption and long-term fat accumulation. Learn more.
10 What plant does green tea come from?
- aloe vera leaves
- camellia sinensis
Green tea uses unoxidized Camellia sinensis leaves, which helps preserve antioxidants and gives the drink a lighter flavor compared to black tea or oolong tea. Learn more.
- Echinacea Root
- hibiscus flower
11 How do seed oils increase heart disease risk over time?
- Linoleic acid damages artery walls
Linoleic acid is easily oxidized, promotes inflammation, damages artery walls, and weakens plaque, which can quietly increase your risk of heart disease for years. Learn more.
- Saturated fat impedes blood flow
- Plaques form within a few days.
- Protein intake weakens blood vessels
12 How many new cases of dementia are expected to occur each year by 2060?
- 514,000
- 750,000
- 1 million
Researchers estimated about 514,000 new cases in 2020, then expected to double by 2060 as more people move into high-risk older age groups. Learn more.
- 2 million
13 What type of medication can be given within 3 hours to clear a blockage during an ischemic stroke?
- antiseizure drugs
- blood pressure medication
- cholesterol blocker
- thrombolytics
Thrombolytic drugs can help break up blood clots and limit brain damage if they are started within the first 3 hours of treatment. Learn more.
14 What is one way to help lower long-term health care costs?
- keep your body moving
Other helpful habits include eating enough protein that includes collagen, eating enough carbohydrates for cellular energy, getting better sleep, safe sunlight exposure, and eating ultra-processed foods and seed oils. Learn more.
- Skip meals more often
- Avoid sunlight completely
- fewer hours of sleep
15 Which antioxidants found in eggs accumulate in the retina of the eye?
- Vitamin C and Copper
- Lycopene and Rutin
- Lutein and Zeaxanthin
Lutein and zeaxanthin help protect vision and may lower the risk of cataracts and macular degeneration. Learn more.
- Selenium and Calcium
16 Ibuprofen and naproxen are examples of what types of drugs?
- Nonsteroidal anti-inflammatory drugs (NSAIDs)
Ibuprofen and naproxen may narrow the blood vessels in the kidneys by reducing the activity of protective hormones, which may decrease kidney function during dehydration or illness. Learn more.
- Selective serotonin reuptake inhibitors (SSRIs)
- calcium channel blockers
- Proton pump inhibitors (PPIs)
17 When does the human body usually perform at its best?
- Around 50 years old
- teenage years
- From 20s to early 30s
By age 50, brain speed, strength, and endurance are often already below peak levels. This is true even when a person still feels healthy. Learn more.
- After 60
18 What approaches do some pediatricians use to help reduce the risk of autism in predisposed infants?
- Early drug treatment according to electroencephalography results
- Drug treatment after genetic testing
- Full body lifestyle modifications
A whole-body approach focuses on modifiable factors, such as reducing exposure to toxins and allergens, to support early neurological and immune health. Learn more.
- Intensive Behavioral Therapy in Early Childhood
19 How does iodine intake affect thyroid health?
- Although it supports thyroid function, excessive consumption may cause autoimmune thyroid disease.
Iodine is needed to make thyroid hormones, but excess iodine can cause autoimmune thyroid disease, especially in people with low genetic tolerance. Learn more.
- It blocks thyroid hormones and reduces immune activity in most people with healthy thyroid function.
- Protects the thyroid gland by replacing thyroid hormones and repairing thyroid damage on its own.
- Over time, it increases genetic resistance and prevents thyroid disease by allowing the thyroid gland to rest.
