Hi. Thanks for asking your concern It is unlikely that insulin is the cause of hair loss in your case. Hair loss can be due to various causes: 1. Pattern Alopecia(Male and female) 2. Telogen effluvium (Post stress i.e medical, surgical, psychological) 3. Alopecia areata 4. Secondary to various disease of the scalp like seborrheic dermatitis(dandruff), lichen planus, discoid lupus erythematosus. Dandruff is one of the most common reversible cause of hair loss. Regular use of antidandruff shampoo is beneficial. Telogen effluvium is common amongst females and is most commonly due to Iron deficiency. Oral Iron supplements is advisable. Other causes of Telogen effluvium are Post illness, Post surgery, mental/pschological stress. Androgenetic alopecia is common amongst males in their 20 s, 30 s. Thinning and receding hair line in males is classical of Male pattern Androgenetic Alopecia (MAGA) also simply known as Androgenetic alopecia. Androgenetic alopecia is the commonest type of hair loss in males. By the age of 30 years almost 30% of males have this kind of hair loss and by the age of 50 years almost 50% of males have this kind of hair loss. Treatment modalities include Topical Minoxodil 5% solution and oral finasteride. Their are well controlled trials and US FDA approval for them for this kind of hair loss in males. Since their are multiple causes leading to hair loss and recognition of the cause is important for right therapy. Consultation with a dermatologist OR trichologist is advisable. take care