Hello! I'm your financial journalist and economic analyst partner. Today, we're going to break down this detailed article from "Pineapple Factor." Although it's dressed up in the language of medical and health topics, its core logic has striking similarities to concepts in economics such as "risk management," "asset allocation," and "long-termism."
The news of Chen Jianzhou (a black man) suffering from a sudden myocardial infarction was like a stone thrown into a lake of public consciousness, sparking the misconception that exercise alone can guarantee life. Dr. Yan Wenwen's explanation actually aims to correct the public's mis valuation of "cardiovascular health" as a critical asset.
Below, I'll break down this article into five key aspects in plain language to help you understand the logic and the "economics of health" behind it.
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1. Debunking the Myth: Exercise is a "Insurance" Policy, Not a "Ticket to Immortality"
Many people have a significant cognitive bias: "I'm in good physical shape, I run fast, I have lots of muscle, so my heart must be fine." In economics, this is called the "survivor bias"; in medicine, it's referred to as "confusing risk factors."
- What's the truth?
Exercise is indeed beneficial; it improves cardiovascular function, helps control weight, and lowers blood pressure. However, the root cause of a myocardial infarction is not "not exercising enough," but "blockages in the blood vessels."
It's like your car's engine (your heart) being in good condition, but the fuel lines (your blood vessels) are clogged with plaque (atherosclerosis). No matter how hard you drive (exercise intensively), if the lines get blocked suddenly, the engine will still stop working.
- Who's to Blame?
The main culprits for these blockages are three factors, in order of importance:
1. High blood pressure: It's like a high-pressure hose constantly eroding the inner walls of the blood vessels.
2. Low-density lipoprotein (LDL, or "bad cholesterol"): It acts like cement, filling the damaged vessel walls and forming plaques.
3. High blood sugar: It makes the blood vessels brittle and hard.
- Note: Smoking, obesity, and family history are also significant factors.
- Conclusion:
Exercise is just one part of preventing myocardial infarctions, and its effect is limited. If you only exercise without controlling your blood pressure, cholesterol, and blood sugar, it's like only maintaining your car without changing the oil—your health will eventually decline. "Being able to exercise" does not mean your blood vessels are unblocked.
2. Risk Identification: Body Signals and Family History
In investing, we look at charts to identify trends; in health, we need to pay attention to the body's signals. Dr. Yan Wenwen highlighted two easily overlooked "high-risk signals":
1. Signs of Decline in Physical Performance
Don't wait until you experience chest pain to go to the hospital. Often, heart ischemia first manifests as a decline in physical capacity:
- Previously: You could do 10 push-ups in one breath; now, you feel chest tightness and fatigue after just a few.
- Previously: You could chase a bus quickly; now, you run out of breath after a few steps.
- Interpretation: This is not just a sign of aging or lack of sleep; it indicates insufficient blood supply to the heart. Continuing to ignore these symptoms is like overusing your health capital.
2. Family History: Your Genetic Risk
Genes determine your baseline health.
- What is early-onset family history?
- Your father (first-degree male relative) was diagnosed with coronary heart disease/myocardial infarction before the age of 55.
- Your mother (first-degree female relative) was diagnosed with coronary heart disease/myocardial infarction before the age of 65.
- Why is this important?
If you meet these criteria, you are inherently at high risk. Even if you look thin and don't smoke, your blood vessels may harden more easily. You should have stricter health check-ups and start interventions earlier.
3. Understanding Key Indicators: Focus on the Main Issues, Don't Let Minor Ones Distract You
There are five indicators on a cholesterol test report, and many people panic at the first one they see or focus only on triglycerides. Dr. Yan Wenwen emphasizes that failing to identify the key one means ineffective management.
1. The Main Enemy: Low-Density Lipoprotein (LDL)
- Role: It's the primary culprit in causing blood vessel blockages.
- Target Levels:
- For healthy people: < 3.4 mmol/L
- For high-risk groups (e.g., those with plaques, diabetes, or high blood pressure): < 1.8 mmol/L or lower.
- Importance: For every 1 mmol/L decrease in LDL, the risk of cardiovascular events is reduced by about 22%. This is a well-established fact in medicine.
2. The Confusing Factor: Triglycerides
- Misconception: Many people think high triglycerides mean high cholesterol overall.
- Truth: Triglycerides contribute little to atherosclerosis (blood vessel blockages); they are mainly influenced by diet (fat, sugar, and alcohol consumption).
- Exception: Extremely high triglycerides (>5.65 mmol/L) can cause acute pancreatitis, which is a medical emergency. However, mild increases can be managed with diet changes without excessive worry.
3. The Helpful Factor: High-Density Lipoprotein (HDL)
- Role: HDL acts as a "scavenger," transporting bad cholesterol back to the liver for disposal.
- Current Status: There are no highly effective drugs to significantly increase HDL levels.
- Improvement Methods: Quit smoking, engage in moderate aerobic exercise (150 minutes per week, enough to make you slightly out of breath but able to talk), and get enough sleep.
4. The Hidden Killer: Lipoprotein(a)
- Characteristics: Completely determined by genetics and unrelated to diet.
- Risk: High levels (>300 mg/L) can accelerate blood vessel hardening. This is still an area of active research in medicine.普通人 should be aware of it and consult a doctor if abnormal levels are detected.
4. Treatment and Reversal: Can Plaques Disappear? How to Choose the Right Medications?
This is a practical question for many.
1. Are Plaques Reversible?
- Old belief: Blood vessel hardening is irreversible, like aging.
- New findings: If LDL levels are significantly reduced (e.g., to below 1.8 mmol/L) and maintained for a period, plaques can be seen to shrink and stabilize through coronary ultrasound.
- Significance: Although they cannot disappear completely, they can become less dangerous, significantly reducing the risk of myocardial infarction.
2. How to Choose Medications: Statins as the Foundation
- Statins (e.g., atorvastatin, rosuvastatin):
- Role: They are the most effective, well-proven, and cost-effective drugs for lowering LDL.
- Side Effects: Mainly muscle pain and elevated liver enzymes.
- Management: If muscle pain occurs, reduce the dose or combine with other medications; coenzyme Q10 supplements may help (effective for about 50% of people).
- Misconception: Don't stop taking the medication arbitrarily. Since 80% of cholesterol is produced by the liver, stopping the drug will cause cholesterol levels to rise again.
- Other Medications:
- Fibrate drugs (e.g., fenofibrate): Specifically target triglycerides.
- Fish oil: Only medical-grade (high in IPE content) is effective; over-the-counter versions are less effective.
- Newer Drugs (e.g., PCSK9 inhibitors): Injections, effective but expensive, typically for high-risk groups who don't respond to statins.
3. The Cost-Effectiveness of Diet and Lifestyle
- Cholesterol Sources: 80% of cholesterol is produced by the liver, 20% from diet. Therefore, avoiding egg yolks has little impact on cholesterol levels.
- Effective Dietary Changes:
- Reduce saturated fats (lard, fatty meats, fried foods).
- Increase unsaturated fats (olive oil, nuts—3-5 per day, in moderation).
- Drink plenty of water (black or green tea, unless you have heart failure).
- Don't Overrely on a Vegetarian Diet: Many thin people have high cholesterol levels due to genetic and metabolic factors, not diet.
5. Summary: Recommendations for Ordinary People's "Health Asset Allocation"
As an economist, I've translated Dr. Yan Wenwen's advice into three actionable guidelines to help you manage your body, your most important asset:
1. Regular "Audits" (Health Check-ups):
- Don't rely solely on ECGs, as they are less sensitive and may miss issues.
- Focus on the five major lipid indicators, blood pressure, and blood sugar.
- If you have a family history or risk factors, consider a coronary CTA (blood vessel CT) for a thorough check.
- Tip: Avoid fasting before the check-up, as it can affect triglyceride levels; the results should reflect your usual levels.
2. Optimize Your "Investment Portfolio" (Lifestyle):
- Control Your Diet: Reduce saturated fats and overall calorie intake. Eat a small handful of nuts daily.
- Exercise Regularly: 150 minutes of moderate aerobic exercise per week (brisk walking, jogging, swimming).
- Quit Smoking: This is one of the best ways to increase HDL and protect blood vessel walls.
- Get Enough Sleep: Ensure adequate sleep and manage stress.
3. Seek Professional Advice When Needed (Follow Medical Advice):
- If lifestyle changes don't lower LDL levels after 3-6 months, take medication as prescribed.
- Don't fear medications. Modern drugs have been proven to offer significant benefits with minimal risks.
- High-risk groups (with plaques, diabetes, or high blood pressure) need to meet stricter target levels.
In conclusion:
Myocardial infarction is not exclusive to athletes or the elderly; it's the result of long-term issues with high blood pressure, high cholesterol, and high blood sugar. Exercise is beneficial, but controlling these conditions is essential. Don't let your youth and love for exercise lead to complacency. Regular check-ups and scientific management are the best ways to take care of your life.