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Structure and Function of the Lungs
#lung, #alveoli, #bronchus, #respiration, #oxygen, #carbon dioxide, #thoracic cavity, #external respiration, #lung function
The lungs are organs that play a central role in breathing. They are responsible for external respiration — delivering oxygen from the air into the blood and expelling carbon dioxide produced by the body. There is one lung on each side of the heart, and each lung is made up of roughly 500 million alveoli (tiny air sacs).2026-06-26
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Sugar Intake and Health
#Sugar, #Table sugar, #Blood sugar, #Obesity, #Carbohydrates, #Simple sugars, #Diabetes prevention, #Diet
Simple sugars, such as table sugar, need little digestion and are absorbed into the bloodstream quickly, which can cause blood sugar to rise sharply. Excessive intake raises the risk of obesity and metabolic disease. The World Health Organization (WHO) recommends limiting free sugars to less than 10% of daily energy intake and suggests a further reduction to less than 5% for additional health benefits. Free sugars include added sugars and sugars naturally present in honey, syrups, and fruit juices.2026-06-26
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Sunburn
#sunburn, #ultraviolet rays, #UV exposure, #burn, #skin, #summer, #cooling, #sun protection, #fever, #having a fever, #high fever, #low-grade fever, #body shaking, #chills, #feeling cold and shivering, #hand tremor, #body tremor
Sunburn is an inflammatory skin reaction caused by excessive exposure to ultraviolet (UV) rays during outdoor activity. It can go beyond simple discomfort and lead to systemic symptoms. If symptoms are severe or persistent, please be sure to consult a dermatologist.2026-06-26
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Surfer's Myelopathy
#surfer's myelopathy, #surfing, #spinal cord, #paralysis, #hyperextension, #low back pain, #urinary dysfunction, #back pain, #lower back pain, #back strain, #numbness in the hands and feet, #arm numbness, #tingling in the legs, #weakness in the arms or legs, #one-sided weakness
Surfer's myelopathy is a rare condition in which reduced blood flow to the spinal cord during activities that involve excessive backward bending of the spine — such as surfing, yoga, or Pilates — leads to neurological symptoms. If leg paralysis or loss of bladder or bowel control develops after low back pain, go to the emergency room immediately.2026-06-26
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Syncope in Children and Adolescents
#syncope, #fainting, #adolescents, #hypotension, #orthostatic hypotension, #reflex syncope, #children, #arrhythmia, #feverish, #having a fever, #high fever, #low-grade fever, #fever, #collapsing, #loss of consciousness, #passing out, #racing heart, #pounding heart, #rapid pulse, #loose stool, #watery diarrhea, #frequent trips to the bathroom
Syncope is a temporary loss of consciousness that occurs when blood pressure drops suddenly and blood flow to the brain is briefly reduced. It is commonly called fainting. It occurs more often in adolescents and older adults, and caution is needed because injuries can occur when a person falls. Because there are many possible causes, if syncope occurs, please consult a medical specialist to identify the exact cause.2026-06-26
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Syphilis
#syphilis, #sexually transmitted infection, #Treponema, #ulcer, #rash, #penicillin, #sexually transmitted disease, #lack of energy, #listlessness, #persistent tiredness, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet
Syphilis is an infectious disease caused by the bacterium Treponema pallidum, which is spread mainly through sexual contact. It can be treated when detected early, but if left untreated, serious complications can develop. If you have suspected symptoms or risk factors, please consult a medical specialist.2026-06-26