Do you hate cholesterol?

Please don't answer the question now because after read this article, you might change your believe about cholesterol. Some of hormones in our body are synthesized from cholesterol. When you are stress, the hypotahalamus, basically part of your brain will release corticotrophin releasing hormone(CRH) which it will stimulate the secretion of corticotropins hormone by adrenal pituitary.

Corticotropins hormone travel in our body via blood vessels until it reach at adrenal cortex( organs just above our kidneys). By react with the receptor sites at the adrenal cortex, it will stimulate the secretion of corticosteroids(synthesized from cholesterol) which is important in regulation of glucose,fat & protein metabolism. CRH usually produce during stress condition including when we are hungry.Hunger also considered physiologically as STRESS. So, you don't like cholesterol? Ok, fine. Corticosteroids won't be secrete, no glucose,fat or protein metabolism occurs. No energy will be provided for you.

Beside corticosteroids, gonadal hormones also have been synthesized from cholesterols. The example for gonadal hormones are estrogens. Estrogens have several metabolic effects including maintaining low total blood cholesterol levels and facilitating calcium uptake which helps sustain the density of skeleton. In other word, estrogen helps to get your bone stronger.So ladies, please do not get hysteria with cholesterol. This is the reason why do women after menapouse tend to get osteophoresis because there are no longer estrogens to help their bones.

As for men, testosterone(also synthesized from cholesterol) maintain the accessory organs include ducts,glands and the penis-causing them to grow and assume adult size and function. When the hormone is deficient or absent,all accessory organs atrophy, semen volumes declines markedly,erection and ejaculation are impaired. Thus, a man becomes both sterile and unable to carry out sexual intercourse.

The conclusion is don't worry too much about cholesterol. The most important thing is have a healthy diet and lifestyles-means beside eat and eat ...let's go for a jog, a walk,hiking, swimming or playing badminton 3 times in a week.

Serangan sakit jantung

Sering kali kita disajikan dengan drama-drama di kaca televisyen bahawa individu yang kaya raya sering kali menghidap serangan sakit jantung. Sejauh mana kebenaran ini jika dilihat dalam dunia realiti? Pertama sekali, biar saya terangkan apa yang dimaksudkan sebagai serangan sakit jantung. Penyakit ini ialah disebabkan oleh sekatan yang berlaku dalam saluran koronari. Salur darah koronari ialah salur darah yang berada pada tisu-tisu otot jantung untuk membekalkan nutrien yang diperlukan oleh sel-sel otot jantung.Hal ini bagi memastikan bahawa jantung kita dapat mengepam darah ke seluruh tubuh badan dan ke peparu.

Terdapat banyak sebab salur darah koronari ini boleh tersumbat. Contoh yang paling biasa kita dengar ialah pembentukan gumpalan lemak di dalam salur darah ini. Apabila lemak bergumpal, secara langsung ia akan mengecilkan diameter salur darah koronari. Secara logiknya, sudah tentu sel-sel darah sukar untuk melalui bahagian tersebut. Tambahan pula sel darah merah yang berperanan untuk membekalkan oksigen pada sel-sel otot jantung tidak dapat melaksanakan tugasnya. Justeru, sel-sel otot jantung kekurangan bekalan oksigen sehingga tidak dapat menjalankan aktiviti metabolisme dan jika keadaan ini berterusan, sel-sel tersebut akan mati.

Pada otot-otot jantung terdapat fiber-fiber yang elastik bagi membolehkan kontraksi berlaku namun apabila sel-sel ini mati, ianya akan digantikan dengan tisu-tisu yang kaku dan tidak elastik. Keadaan adalah lebih teruk jika hal ini berlaku pada bahagian ventrikel kiri(bahagian bawah jantung di sebelah kiri) yang mengepam darah ke seluruh tubuh badan.

Kenapa warga tua berpotensi tinggi untuk mendapat serangan sakit jantung? Satu soalan yang baik. Hal ini kerana apabila kita semakin tua, keupayaan tisu-tisu lemak untuk membentuk sel-sel lemak menjadi semakin cekap. Oleh itu, sangat penting bagi kita untuk mengawal diet pemakanan seharian, banyakkan bersenam dan elakkan mengambil makanan berlemak melebihi kuantiti yang dibenarkan. Bagi warga tua, sangat dianjurkan bagi mereka untuk bersenam mengikut kemampuan diri.

Tears

I'm sure that most of us had been experienced with tears but do you understand what it is actually all about? Tears or its scientific name is lacrimal secretion which is a dilute saline solution. It consist of lacrimal fluid that contain mucus, antibodies and lysozyme(enzyme that destroys bacteria). Thus, it helps our eye in order to cleanses and protects the surface as it moistens & lubricates it. Tearing happens when the eyes are irritated in order to wash away or dilute the irritating substances while the importance of emotionally induced tears is poorly understood.

However, the other interesting fact about tears is when you cry, it is just not only tears will drop out, do you ever realize that you also experience "running nose"? Look into the mirror and try to find lacrimal puncta ( tiny red dots on the medial margin of each eyelid). They are two tiny opening which your tears will enter via them into lacrimal sac and then into nasolacrimal duct which empties into the nasal cavity( inside your nose).That is the cause for congestion and the "sniffles".

Pity feet

We demand a lot from our feet with the weight from entire part of our body trunk put on them. Our poor aching feet take more punishment in one day than all other parts of the body put together. In this regard, proper footwear is very important. Poorly fitting shoes can really kill you. Because your feet support your body structure, you tend to walk, stand and sit differently when your feet are in pain. This will turn hurt your back and neck. Let's look at the differences between 2 popular shoe's design:

Heels Vs Flats

Heels

Pros

make leg look more elegant & sexy
better for power dressing
help certain posture problem
kinder on your Achilles tendon
help heal sore harmstrings

Cons
fracturing of foot bones
ingrown toe nails
hammer toes
inflammation of balls of feet
bunions
knee and back pain

Flats

Pros
less likely to sprain ankle
better for back health

Cons
cause feet to roll inwards pulling ligaments apart and causing shooting pains along bottom
of the feet
cause big toes to be pulled out of alignment with the foot,causing pain and stiffness
bunions
inflammation and athritis under kneecap
backache
inflammation and shin pain
make leg look stumpy

So, what kind of shoes to wear?

According to the consultant podiatric surgeon and spokesman for the Society of Chiropodists and Podiatrists in Uk, Dr O'Neill says '"The feet aren't designed to work in either flats or high heels. The ideal heel size is around an inch." However it is not mention that it can't murder on your feet. The best thing is change your shoe style often. Besides, you need to walk around bare-footed at home to give your feet a good rest from any sort of footwear and walk to work in trainers, not flats.

"Runny" nose and nosebleeds

I'm sure all of us have been experienced in ''runny" nose while exposed to cold air. Do you had ever think why it is happen? In our nasal cavity, there are ciliated cells structured of the respiratory mucosa which create a gentle current that moves the sheet of contaminated mucus posteriorly toward the throat where it is swallowed and digested by stomach juices. When exposed to cold air, our nasal cilia become sluggish, allowing mucus to accumulate in the nasal cavity and then dribble out the nostrils. Together along with the fact that water vapour in expired air tends to condense at these lower temperature help explain why you might had "runny" nose on a crisp. On the other hand, rich plexuses of capillaries and thin-walled veins underlie the nasal epithelium and warm incoming air as it flows across the mucosal surface. When the inspired air is cold, the vascular plexus becomes engorged with blood, thereby intensifying the air-heating process. How great The Creator? If we don't have this mechanism, can you imagine how will you look like when you inhale -4°C air into your lung in certain country during winter? However, during hot day, some of us might had experienced nosebleeds because of the abundance of blood vessels at this area dilate and get nearer to the surface in order to loses some heat. There are possibilities that some of the blood vessels burst and cause bleeding.