We’ve all seen the memes: “I don’t have low testosterone, but I do like to grow a beard.” Or, “If you can grow a beard, that means your testosterone is fine!” It seems like there are two camps on beards these days: those who love them and those who hate them. But what about the science behind this debate? Can growing a beard really tell us something about our bodies? Let's explore some of the current theories in this article.
The Science Behind Beards and Testosterone
You've probably heard that testosterone is the hormone that helps men grow facial hair. And if you've got a patchy beard, it's easy to jump to conclusions about your hormone levels. But before you start popping pills and applying topical oils, let's examine the science behind beards and testosterone—because while they're related in some ways, they're not exactly the same thing.
Testosterone levels vary from person to person, but generally speaking, men have higher concentrations of testosterone during their 20s and 30s than at any other point in their lives (except maybe during puberty). Other factors can affect how much T enters your bloodstream: genetics plays a role (some people have more receptors for binding T than others), as does body fat percentage and body mass index (BMI). As such, some research suggests that men who are overweight or obese tend to have lower blood levels of total T than normal-weight men do; however this hasn't been proven universally true across all studies.
According to Harvard Medical School's Office of Communications & External Relations director Dr Ian Lang Leong: “Testosterone itself is not responsible for causing facial hair growth." Instead he says that "the presence of dihydrotestosterone (DHT) may be what causes hair follicles on our faces to produce thicker hairs with heavier pigmentation," which would explain why some guys seem able to grow lush beards no matter what age they get into while others struggle with patches or goatees despite having plenty of time left on their plates before retirement
Baldness, Body Fat, and Testosterone
Testosterone is a hormone that's produced by the testicles and helps to develop male characteristics. To put it simply, testosterone controls how masculine you are. It does this by making your body produce certain proteins that cause certain physical changes, like facial hair growth and muscle development.
For example: if you have low testosterone, then it means your body doesn't produce enough of the protein needed for these characteristics to emerge. So if you're having trouble growing facial hair or developing muscles where there's none before—or if they disappear when they should be getting bigger—it's possible that your hormone levels are too low.
But sometimes men experience patchy hair loss without having any problems with their hormones at all! So what gives?
Are You Too Old for More Facial Hair?
Many guys in their 20s and 30s have a patchy beard, but that doesn’t mean it’s a sign of low testosterone. In fact, age can be a factor when it comes to facial hair growth.
Other factors that can affect your ability to grow facial hair include genetics, health and stress levels. The average age at which men start to lose their hair is around 25 years old — not exactly early puberty levels!
The good news is that as you get older, your testosterone levels decline gradually (no sudden drop). This means your body will likely produce less facial hair than it did when you were younger — and if you shave regularly, there won't be much left on top of your face anyway!
What About Men Who Can’t Grow Beards?
While a patchy beard can be a sign of low testosterone, it's not the only thing that could be affecting your beard growth. Genetics and age play major roles in how thick your hair grows. The same goes for diet. For example, eating foods with high-protein content (like eggs) and healthy fats (like avocado) will help keep your hair healthy and strong by providing the nutrients they need to grow at their best rate.
One study that attempted to look at the effect of testosterone on facial hair growth found no correlation between the two, while other studies have suggested that higher levels of testosterone are linked with both more prominent beards and thicker hair elsewhere on the body.
These studies don't necessarily contradict each other; we may simply need more research on this topic before we can fully understand how testosterone works in relation to facial hair growth.
If you’re concerned about your facial hair and testosterone, it’s best to talk with your doctor and discuss whether or not they think there are other factors at play.