Yes, it is normal to lose a few hairs every time you run your hand through your hair. On average, it is normal to lose about 50 to 100 hairs per day, as part of the normal hair growth cycle.
The hair growth cycle has three stages: the anagen phase (active growth phase), the catagen phase (transitional phase), and the telogen phase (resting phase). During the telogen phase, hair strands fall out naturally, and new hair grows in its place.
However, if you notice excessive hair loss, such as clumps of hair falling out or thinning hair, it may be a sign of an underlying medical condition, such as a thyroid disorder or alopecia. In these cases, it's important to speak to a healthcare professional or a dermatologist to determine the cause and receive appropriate treatment.
Additionally, certain factors such as stress, poor nutrition, and hair styling practices can also contribute to hair loss. Therefore, it is important to maintain a healthy lifestyle, nourish your hair with a healthy diet and gentle hair care practices, and avoid harsh hair treatments to prevent excessive hair loss.