A full head of hair is associated with strength, virility, and youth. As men get older, they begin to progressively lose hair in the form of receding hairlines, thinning, and bald spots, but what exactly causes hair loss and how can it be reversed?

In the infographic, “7 Male Hair Loss Causes (and How to Fix Them),” Lloyds Pharmacy explores the most common causes of follicle loss and how it can be treated. There are many types of hair loss with many different causes, ranging from genetics to skin conditions. Hair loss is inevitable, with two-thirds of men experiencing some degree of hair loss by 35, according to the American Hair Loss Association.

The most common cause of hair loss is male pattern baldness, which causes the familiar “U-shape” balding patch on many men. Despite popular belief, this condition is not caused by stress, but purely genetic and passed on by both sides of the family. However, there is a prescription tablet, known as Finasteride (or "Propecia") which is effective for 90 percent of men.

Finasteride interferes with the conversion of testosterone to another hormone called 5 alpha-dihydrotestosterone (or DHT) to work at the root of the problem by significantly decreasing DHT levels. Propecia has been shown to reduce scalp DHT (the main culprit of hair loss) levels by up to 60 percent.

Aside from genetics, lifestyle factors that can influence hair loss include diet. Like the human body, hair needs nutrients to grow and stay healthy. Sudden weight loss, low iron levels, or a poor diet can all lead to hair shedding, temporarily. The key to remediating this type of hair loss is eating a healthy, well-balanced diet with plenty of protein, iron, zinc, and biotin. Foods such as legumes like kidney beans and lentils are ideal.

Hair loss can also be attributed to skin and scalp conditions. Psoriasis, the buildup of skin cells forming scales and itchy, dry patches, can cause an overproduction of skin cells visible as large white flakes. This can easily be mistaken with dandruff. However, unlike dandruff, this condition can sometimes damage hair follicles and lead to temporary hair loss. Males who have psoriasis should consult their doctors to receive treatments such as medicated shampoos. Hair growth should return to normal once the condition receives appropriate attention.

Hair loss happens to almost every man at some point in his life. Treatments are becoming more advanced, so it's always best to identify the cause of hair loss and then seek out the best possible treatment.

7 Male hair loss causes (and how to fix them)

From Visually.