How our body ages

[aspundir]

How the body ages some interesting information.


Different Parts of Our Body Age at Different Times

We all accept that getting older is inevitable, and now leading clinicians have revealed the exact age when different body parts start to decline, most alarming being the brain and lungs.

French doctors have found that the quality of men's' sperm starts to deteriorate by 35, so that by the time a man is 45, a third of pregnancies end up in miscarriage.

Here, with the help of leading clinicians, Angela Epstein tells the Daily Mail the ages when different parts of the body start to lose their battle with time.

[aspundir]

BRAIN - Starts ageing at 20

As we get older, the number of nerve cells or neurons in the brain,
decrease.
We start with around 100 billion, but in our 20s this number starts to
decline.
By 40, we could be losing up to 10,000 per day, affecting memory,
co-ordination and brain function.

[aspundir]

FERTILITY - Starts ageing at 35

Female fertility begins to decline after 35, as the number and quality of
eggs in the ovaries start to fall. The lining of the womb may become
thinner, making it less likely for a fertilised egg to take, and also
creating an environment hostile to sperm.

[aspundir]

HAIR - Starts ageing at 30

Male hair loss usually begins in the 30s. Hair is made in tiny pouches just
under the skin's surface, known as follicles. A hair normally grows from
each follicle for about three years, is then shed, and a new hair grows.
Most people will have some grey hair by the age of 35. When we are young,
our hair is colored by the pigments produced by cells in the hair follicle
known as melanocytes.

[aspundir]

GUT - Starts ageing at 55.

A healthy gut has a good balance between harmful and 'friendly' bacteria.
But levels of friendly bacteria in the gut drop significantly after 55,
particularly in the large intestine.
As a result, we suffer from poor digestion and an increased risk of gut
disease.
Constipation is more likely as we age, as the flow of digestive juices from
the stomach, liver, pancreas and small intestine slows down.

[aspundir]

BREASTS - Start ageing at 35

By their mid-30s, women's breasts start losing tissue and fat, reducing
size and fullness.
Sagging starts properly at 40 and the areola (the area surrounding the
nipple) can shrink considerably.

[aspundir]

BLADDER - Starts ageing at 65

Loss of bladder control is more likely when you hit 65. Women are more
vulnerable to bladder problems as, after the menopause, declining estrogen
levels make tissues in the urethra -- the tube through which urine passes
-- thinner and weaker, reducing bladder support.
Bladder capacity in an older adult is generally half that of a younger
person -- about two cups in a 30-year-old and one cup in a 70-year-old.

[aspundir]

LUNGS - Start ageing at 20

Lung capacity slowly starts to decrease from the age of 20.
By the age of 40, some people are already experiencing breathlessness.
This is partly because the muscles and the rib cage which control breathing
stiffen up.

[aspundir]

VOICE - Starts ageing at 65

Our voices become quieter and hoarser with age. The soft tissues in the
voice box (larynx) weaken, affecting the pitch, loudness and quality of the
voice.
A woman's voice may become huskier and lower in pitch, whereas a man's
might become thinner and higher.

[aspundir]

EYES - Start ageing at 40

Glasses are the norm for many over-40s as failing eyesight kicks in --
usually long-sightedness, affecting our ability to see objects up close.