By: Dr. Salihu Lukman
The human body is a marvel of nature, filled with complexities that continue to astound scientists and everyday learners alike. Here are three remarkable facts about our bodies that highlight their ingenuity and magnificence:
1. You Are 90% Bacteria and Only 10% Human
Believe it or not, the ratio of bacteria to human cells in your body is about 10:1! Most of these bacteria reside in your large intestine (colon), playing vital roles in digestion, immunity, and overall health.
In just one centimeter of your colon, the number of bacteria exceeds 100 billion, outnumbering all the people who have ever lived on Earth. These microorganisms are more than just passengers—they are critical allies in maintaining your health. Annoy them, and they can cause havoc, such as frequent trips to the bathroom. But nourish them, and they’ll help keep your gut healthy and your immune system strong.
How to care for your gut bacteria:
• Feed them fermented fibers found in foods like yogurt, vegetables, and whole grains.
• Include nutrient-dense meals, especially fruits, vegetables, and whole grains.
By maintaining a healthy relationship with your gut bacteria, you’re taking a big step toward better overall health.
2. The Brain: The Most Complex Object in the Universe
Sitting atop your shoulders is the brain, the most intricate and fascinating structure known to humankind. Its complexity is unmatched, far surpassing any machine or technology we’ve ever developed. To replicate its functions using a computer, you’d need a machine the size of a city block, consuming as much energy as a nuclear power plant and requiring a river for cooling.
And yet, your brain operates on just 20 Watts of power, roughly the energy needed to light a small bulb. This efficiency and complexity make the brain one of nature’s most incredible creations.
Tips for keeping your brain healthy:
• Eat brain-friendly foods such as omega-3-rich fish, nuts, and seeds.
• Incorporate antioxidants from fruits, vegetables, and leafy greens.
• Include B vitamins from whole grains, eggs, and fish.
• Prioritize sleep, regular exercise, and continuous learning to challenge your brain.
Your brain is your greatest asset—take care of it to unlock its full potential!
3. Stomach Acid: A Powerful but Safe Weapon
Your stomach produces hydrochloric acid (HCl), a remarkably strong acid with an average pH of 2. Initially secreted at a pH as low as 0.8, it stabilizes between 1 and 3 upon mixing with other gastric secretions. This acid plays a crucial role in:
• Killing pathogens in the food you eat.
• Breaking down proteins to aid digestion.
• Activating digestive enzymes and other substances in the stomach.
If you recall your basic chemistry, pH measures the concentration of hydrogen ions (H+) in a solution. The scale ranges from 0 to 14, with 7 being neutral. Values below 7 indicate acidity, while values above 7 indicate alkalinity. In extreme cases, pH can drop below 0, as in highly acidic solutions like industrial acid waste or wastewaters (pH -1, -2, etc.).
At a concentration of 0.155 molarity, stomach acid is considered dilute and cannot burn your skin. However, a 10 molar HCl solution—used in industrial applications—would be dangerously concentrated and capable of causing severe burns.
While stomach acid is potent enough to dissolve many substances, your stomach lining is equipped with protective mechanisms to prevent damage. This balance ensures efficient digestion without harming your body.
The Human Body: A Masterpiece of Nature
From the invisible microbes in your gut to the unparalleled complexity of your brain and the formidable power of your stomach acid, the human body is a testament to nature’s brilliance. Understanding and appreciating these wonders not only deepens our curiosity but also emphasizes the importance of self-care.
Nourish your body with wholesome food, stay active, and keep learning. By doing so, you honor the intricate systems that keep you alive and thriving. Your body is more than a machine—it’s a masterpiece worth cherishing.
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