Men’s sperm numbers and fertility also decline with age. If you’re planning to have kids in the future, here’s what you need to know.
- Associate Professor of Medical Sciences, University of Wollongong
A freediver recently set a new world record for a breath hold. His physical and mental training allowed him to delay a basic human survival response: breathing.
This concoction is being touted on social media – here’s what the evidence says.
Semen, sperm, pre-cum, seminal fluid. These terms are sometimes used interchangeably – here’s the difference.
Chronic venous insufficiency is a disease of the veins, where blood doesn’t flow as well as it should from the legs up to the heart.
An operation to remove the uterus should be called a uterectomy – like the removal of the tonsils is a tonsillectomy, or an appendix removal is an appendectomy.
There are several lifestyle risk factors that increase the risk of brain aneurysms.
When it comes to blocking harmful UV rays, not all windows are equal. Sometimes you’ll need extra protection.
Diz a lenda que o cabelo de Maria Antonieta ficou branco na noite anterior à sua condenação à guilhotina. Isso é um mito, mas alguns tipos de danos e estresse podem fazer com que seu cabelo fique grisalho prematuramente.
Selon la légende, la chevelure de Marie-Antoinette serait devenue entièrement blanche la nuit précédant son exécution. S’il s’agit là d’un mythe, certains stresses peuvent effectivement donner des cheveux gris.
Legend says Marie Antoinette’s hair turned white the night before she faced the guillotine. This is a myth – but some kinds of damage and stress can make your hair go grey prematurely.
Why do some athletes’ heart and breathing rates soar during competition but others’ slow down?
Normally, breathing happens automatically. But we can control our breath, by directing the movement of our diaphragm and mouth. And the benefits are significant and wide-reaching.
Our blood is red because of something called haemoglobin, which helps carry oxygen around our bodies.
We can’t avoid stress altogether. But there are healthy ways to deal with it and move on.
Changes around puberty and pregnancy can affect the function of genes influencing hair shape. And chemotherapy can cause hair to regrow in a different shape for the first few cycles of hair regrowth.
The trigeminal nerve is at the heart of the sneeze reflex. But stopping a sneeze once triggered can increase its force and redirect pressure in dangerous ways.
The sympathetic nervous system produces our fight-or-flight response to any perceived threat. The vagus nerves are part of the parasympathetic nervous system, which does the opposite.
Pada tingkat yang paling dasar, otak melepaskan campuran bahan kimia. Namun, ternyata tidak sebatas itu saja. Inilah yang terjadi pada otak dan tubuh saat kamu jatuh cinta.
Named after Greek and Roman mythical creatures, the lymph that flows around the body helps it fight off infection and maintain a fine balance of fluids.
Keeping warm in winter and cool in summer is down to more than the length of your hair.
Some of what is being blamed on cortisol are symptoms of chronic stress or depression – which makes sense, since they’re linked.
At the most basic level, the brain releases a cocktail of chemicals. But there’s more to it than that.
Around two in every 100 people have sex characteristics between the male-female binary definitions. Training for doctors and other health workers needs to reflect this.
We can answer this question by looking at the differences between the first, second and third layers of our skin.
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