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Alexandra
@alexandrak354
Brain Efficiency
Our brain weighs just 2% of our body weight, yet consumes 20% of our energy requirements. Even when not active, it will burn roughly 400 calories every day.
The most efficient brains burn the least calories. Efficient brains can save a task quickly and then go into a kind of standby mode.
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Violet S.
@violet_s81
What we do and don't know about gut health
Western vs. Mediterranean diet
Western diet, typically high in animal fat and protein and low in fibre, increases the risk of cancer. The Mediterranean diet is high in fibre and low in red meat and has be...
Probiotics
There has been a lot of hype around the health benefits of prebiotics and probiotics in recent years, but while they're increasingly used in treatments including inflammatory bowel diseases such as Crohn’s disease and ulcerative colitis, several reviews suggest there needs to be further research on which strains and dosages are effective. Recent studies have found some people are even immune to probiotics.
Gut microbiota
Gut microbiota has a major role to play in the health and function of the GI tract, with evidence that conditions such as irritable bowel syndrome (IBS) often coincide with altered microbiota. But it also plays a much wider role in our health, and this is largely determined in the first few years of life.
Gabriela G.
@gabrielagg80
Healthy Living: 20 Common Health Myths Exposed
Drink 8 Glasses of Water a Day
Everyone has a different requirement for water. Temperature, humidity, size, age, gender and activity have an influence on your fluid needs.
Instead, drink when you are thirsty.
Eggs Harm Your Heart
Eggs have a lot of cholesterol compared to other foods. Although cholesterol in the blood is strongly related to heart disease, eating cholesterol is weakly associated with raising the cholesterol levels in your blood.
Eggs have other heart-protecting properties and eating it probably won't harm your heart.
Cancer or Alzheimer’s From Antiperspirant
- A chain email in the 1990s was responsible for the false belief that antiperspirant was raising the risk of breast cancer.
- When researchers found higher ratios of aluminum in the brains of Alzheimer's patients, aluminum in antiperspirant was suspect. But it seems aluminum in antiperspirant is hardly absorbed by your skin.
Emily Q.
@emily_uq65
9 eye-opening facts about antibiotic resistance
Antibiotic resistance
Antibiotics may lose their ability to treat bacterial infections.
Scientists have been warning us about the alarming rise in drug-resistant bacteria, but it can be curbed.
Penicillin
- Penicillin was the first widely-used antibiotic. It was discovered in 1928 by Alexander Fleming, a bacteriologist.
- He noticed that the staph cells he'd been studying in a petri dish had died, and an unusual mold was growing in it.
- The mould was purified and tested in 1940, and later mass-produced.
- By 1943, the US was supplying all the Allied forces with this miracle drug, which gave them an advantage in treating injuries.
Existing antibiotics found in the dirt
- An agriculture student-turned-microbiologist, Selman Waksman, tested 10,000 soil samples over the years.
- In 1943, he identified streptomycin, a broad-spectrum antibiotic effective against tuberculosis.
- Drug companies caught on to it, and commissioned pilots, explorers, and foreign correspondents sent back soil samples as they traveled, collecting dozens of new antibiotics.
- By 1970, researchers found themselves discovering the same molecules over and over.
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