Is it normal to have one small and one big egg?

Slight differences in male testicle size are normal. The testicles on both sides are usually asymmetrical, and there is no need to worry if the difference is within 10%-20%. It is mainly related to factors such as innate development differences, daily activity habits, local blood circulation, postural changes, and temperature regulation.

1. Congenital developmental differences:

During testicular development during the embryonic period, the gonads on both sides may descend at different rates, resulting in physiological differences in adult size. In most men, the right testicle is slightly larger than the left, and this difference usually does not affect fertility or hormone production.

2. Daily activity habits:

Prolonged unilateral pressure such as sedentary cycling or sports injuries may cause temporary swelling. The left testicle is more prone to varicose veins due to the longer spermatic vein, which manifests as an obvious drooping sensation in the scrotum on the affected side, and the symptoms are relieved after lying down.

3. Local blood circulation:

Varicocele commonly occurs in young men aged 15-25. The testicle on the affected side may shrink and become soft due to blood accumulation. With earthworm-like masses visible on the surface of the scrotum, and the feeling of swelling worsening after standing for a long time, color Doppler ultrasound is required for diagnosis.

4. Postural changes:

Contraction of the cremaster muscle will temporarily lift the testicular position, and bilateral asymmetric contraction may cause visual errors during cold stimulation. It is recommended to perform self-examination in a standing position in a warm environment, using gentle palpation with the thumb and index finger for comparison.

3. Temperature adjustment:

The scrotal skin regulates temperature through relaxation and contraction, and strong unilateral sweat gland secretion may cause temporary volume changes. If it is accompanied by redness, swelling, heat and pain or a hard texture, you need to be alert to infectious diseases such as orchitis and epididymitis.

It is recommended to perform a testicular self-examination once a month and hold the scrotum with the palm of your hand to observe the outline while taking a bath. Normal testicles should be oval in shape, with a smooth surface and elasticity when pressed. When the volume difference exceeds 30% and is accompanied by pain or texture changes, testicular hydrocele, testicular tumors and other pathological conditions need to be investigated. Avoid wearing tight pants on a daily basis. Workers in high-temperature environments can choose breathable cotton underwear. It is recommended to wear special protective gear during strenuous exercise. Maintain moderate exercise to improve pelvic blood circulation. Squats and Kegel exercises can help enhance scrotal muscle coordination. Pay attention to supplementing the diet with zinc, oysters, pumpkin seeds, vitamin E, nuts and spinach, and control alcohol intake to prevent testicular atrophy.