The causes and solutions for cat shedding are as follows:
I. Reasons
Seasonal molting: Cats naturally molt during the spring and autumn seasons to adapt to temperature changes.
Malnutrition: A lack of nutrients such as protein and vitamins can lead to dry, brittle, and easily falling hair.
Skin diseases such as ringworm and dermatitis can cause itchy, red, and swollen skin, which in turn can lead to hair loss.
Parasitic infections: Fleas, mites, and other parasites bite the skin, causing inflammation and hair loss.
Endocrine disorders, such as hyperthyroidism and diabetes, affect metabolism and hormone levels, leading to abnormal hair loss.

II. Solutions
Regular brushing promotes metabolism and hair growth, and reduces loose hair.
Balanced nutrition: Provide cat food rich in protein and vitamins, and supplement with products that promote healthy coat such as fish oil and lecithin if necessary.
Treatment for skin diseases: Take your cat to the vet promptly for treatment with antifungal medications, deworming medications, etc.
Keep the environment clean: Regularly clean the cat's bed, litter box, etc., to reduce bacterial growth and allergen accumulation.
Control the frequency of bathing: Use pet-specific shampoo and grooming products to avoid frequent bathing that could damage the skin's natural oil layer.