I shouted a few times just now, but it was not very loud. Now my voice has changed. What happened? I've had a bad voice recently.

Teenagers generally enter the voice change period at the age of 14- 16. This period is the growth and development stage of their larynx and vocal cords. Its manifestations are hoarseness, narrow vocal range, weak pronunciation, local congestion and edema, and increased secretion.

Generally, the voice change period is six months to one year. If you want to maintain your voice well during the voice change period, besides using your voice scientifically and reasonably, it is also very important to pay attention to your diet.

First of all, pay attention to the intake of collagen and elastin.

The vocal organs are mainly composed of Adam's apple, Adam's apple and thyroid cartilage, which are composed of mucin and elastin. Vocal cords are also made of elastin membranes. Therefore, teenagers in voice change period should eat more foods rich in collagen and elastin, such as pig's trotters, pigskin, tendons, fish, beans and seafood.

Second, we should take B vitamins and calcium.

Vitamin B2 and vitamin B6 can promote the development of skin; Calcium can promote the development of thyroid cartilage. Foods rich in vitamins mainly include celery, tomatoes, eggs, beans, animal livers and fresh fruits. Foods rich in calcium mainly include fish and shrimp, milk and bean products.

Third, staple food and non-staple food should be soft and fine.

Don't eat fried peanuts, popcorn, crispy rice, nuts and fried hard food to avoid mechanical damage to your throat.

Fourth, drink more water.

It can reduce or eliminate local secretions and avoid secondary infection.

Fifth, eat less sour and bitter food.

Such as garlic, pepper, ginger, leek and so on. Because these foods will irritate the trachea, larynx and vocal cords. Don't drink too hot boiled water or too many cold drinks. Too cold or too hot is not good for vocal cords. Alcohol and tobacco should be avoided to avoid aggravating local discomfort.

Bacterial inflammation.

Sixth, chew slowly when eating. Don't eat too fast, but also beware of sand and fishbone in food stabbing throat tissue.

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Before puberty, there is little difference in pronunciation between boys and girls, but after puberty, there will be obvious differences. Boys, in particular, will be a little hoarse when they speak, commonly known as "broken voice." When you look closely, you will find that the boy's Adam's apple has become bigger, but it is not very prominent. This stage is called voice change. After a while, the boy's voice will change from a child's voice to a deep voice, similar to that of an adult male, and the Adam's apple will stand out. Adam's apple and voice change are closely related.

During adolescence, the development of the human body changes greatly, and the development of the larynx is also very rapid. The larynx is mainly composed of upper thyroid cartilage and lower cricoid cartilage. Thyroid cartilage is formed by connecting the left and right cartilages at the midline, and its shape is like a two-page book cover spread backwards. The vocal cords are located in the thyroid cartilage. After the boy enters adolescence, the larynx grows rapidly, the angle of left and right cartilages becomes smaller, and the upper part protrudes forward to form the Adam's apple. At this time, the front and back necks of the larynx also widened rapidly, the length of vocal cords almost doubled, and the width and thickness also increased. With the development of vocal cords, from the audio point of view, it will be reduced by about an octave, so the child's voice will become a deep male voice. The average boy 13 years old began to change his voice, and 15 years old has completely changed his voice. After 19, all boys have prominent Adam's apple and their voices become thicker.

Although there is no obvious change in the appearance of the girl's Adam's apple in adolescence, there are obvious changes in the Adam's apple: that is, the vocal cords become longer and narrower, so the pronunciation frequency is high and the tone is high and sharp.

The length of the voice change period varies from person to person, ranging from 4 to 6 months to about a year. During the voice change period, the vocal cords have undergone obvious changes, such as congestion, swelling and increased secretions, which are easy to be damaged. Therefore, in order to protect their voices, teenagers in this period should not scream loudly or talk loudly for a long time. Try to avoid the stimulation of external adverse factors, do not smoke, do not eat irritating food, do a combination of work and rest, actively participate in sports activities, and prevent colds and colds.