men

WTF Fun Fact 13273 – Men’s Nipples Lactate

It’s extremely rare unless something is wrong with the body, but technically, men’s nipples lactate. That is, they are capable of producing milk, which is the function of a nipple.

All fetuses develop nipples. Male, female, and intersex fetuses develop nipples during the early stages of fetal development, typically around 6 to 7 weeks gestation. This is because nipples are a fundamental part of the human anatomy. It is only later in fetal development that sex-specific features begin to emerge, such as the development of genitalia.

How, when, and why do men’s nipples lactate?

While lactation in men is a rare occurrence, it is not something that should be dismissed as a mere anomaly. Despite being uncommon, men can and do produce breast milk in certain circumstances. For example, it may happen during hormonal imbalances or after frequent stimulation of the nipples. This phenomenon has been documented in a variety of mammalian species, including humans. Yet much remains to be understood about the underlying biology and mechanisms driving male lactation.

Male lactation is also known to occur in response to the hormonal changes brought about by certain medical conditions. For example, in some cases, male lactation is triggered when a man experiences a rise in the hormone prolactin.

The role of prolactin

The hormone responsible for milk production in females plays a similar role in males. Prolactin stimulates milk production in the mammary glands, and in males, it is secreted by the anterior pituitary gland.

However, the prolactin levels in males are much lower than in females. This is why milk production in males is rare, and the amount produced is usually not enough to sustain an infant. The biology involved in male lactation involves the mammary glands, which are present in both men and women.

While these glands are not fully developed in men, they still have the potential to produce milk. The process of male lactation can also be triggered by stress, certain medications, or a tumor in the pituitary gland.

Stimulating lactation in men

Another cause of male lactation is the use of medications that can mimic the hormonal effects of pregnancy and breastfeeding. For example, medications containing estrogen can cause an increase in prolactin production, leading to milk production in men’s mammary glands.

Despite the rarity of male lactation, some men have been able to nurse their infants successfully. One example is a man named Jack Newman. After adopting a child, Newman was able to induce lactation through a combination of hormone treatments and frequent nursing sessions.

Male lactation may seem like a strange and abnormal occurrence. But the rare phenomenon of male lactation is a fascinating subject. And it has captured the interest of scientists and laypeople alike. While much remains to be discovered, continued research into male lactation could have significant implications for our understanding of infant nutrition and lactation science as a whole. The underlying mechanisms that allow men to produce milk could help to improve our understanding of the biology of lactation in general. This could lead to breakthroughs in lactation-related issues such as mastitis and low milk supply.

Despite these potential benefits, male lactation remains a largely unexplored field of study.

— WTF fun facts

Source: “Strange but True: Males Can Lactate” — Scientific American

WTF Fun Fact 12801 – Men’s Dirty Sheets

Studies in both the US and the UK show that single men don’t get around to washing their sheets very often. In fact, nearly half only wash them four times a year! Those are some dirty sheets!

Why wash dirty sheets?

Sheets should really be washed once a week – every two weeks, tops. Anything less is just unhygienic, and that has consequences for your social life and health.

We all sweat into our sheets and they can become clogged up with that sweat, making them smell pretty awful and reducing the ability to cool us off because there’s no good airflow.

In addition, we shed dead skin cells everywhere we go, but probably shed the most in bed. Those also build up in sheets and, as a result, so do the mites that feed on them.

Yes, you are sleeping in sweat-clogged, mite-filled sheets if you don’t wash them often. And chances are people can probably tell, even if you shower in the morning. These mites can give you some gnarly skin conditions, or even just clogged pores that keep you from looking glowing and healthy.

Guys, wash your sheets!

Sure, not everyone has access to laundry in their home, but guys used some pretty lame excuses for not changing their dirty sheets.

Many believed that showering at night keeps your sheets clean. But clearly they forgot the clean skin still sweats and sheds, and bad breath can also affect sheet cleanliness.

If you have allergies, it’s even more important to wash your sheets often. Open windows, pets, pollen, and other allergens we carry on our bodies dirty our beds as well.

In the UK study, the most common reasons men gave for not washing sheets often enough were:
– Forgetting (67%)
– Not being bothered by dirty sheets (35%)
– Not having any other clean bedding (22%)

– WTF fun facts

Source: “How often should you change your bed sheets?” — BBC News

WTF Fun Fact 12739 – The Dreams of Men

Multiple studies have shown tend to have more male characters in their dreams.

We have very little control over what we dream about, even though many of us try to direct our dreams. (I know I do – if I could spend all night dreaming about being a wealthy villa owner on an abandoned tropical coast instead of reliving a made-up scenario about missing a vital exam and never graduating high school, I would!)

Studying dreams

Anyway, there are hundreds of studies on dreams. Most of them involve having people use dream journals where they write down the contents of their dreams any time they awaken. The journals are then processed by a researchers who looks for certain characteristics without knowing anything about the person the journals belong to (that’s why they’re called a “blind judge” in many research papers).

Researchers usually start with common themes and types of characters and count mentions of them. And a lot of the research has backed up the data we’ve collected over time. (However, there are some differences between cultures as to what we dream about.)

Demhoff’s dream research

For example, G. William Domhoff wrote one of the most widely-cited papers on the genders we dream about (nearly two decades ago, before talking about more than two genders was a cultural priority). It’s called “The Dreams of Men and Women: Patterns of Gender Similarity and Difference,” and it was published in 2005.

In the paper, Domhoff is very clear that “The study of gender similarities and differences in dream content has proven to be a dangerous mine field for dream researchers.” That’s because this kind of information has the “potential to stir up all the tensions that inevitably accompany any discussion of gender in a world where gender discrimination–and conflicts between men and women on many personal issues–are pervasive.”

Limited interpretations

In other words, it’s likely that a large number of people will dislike this “fun fact” because they somehow feel judged by it or don’t like whatever they think it implies (which is largely nothing).

Demhoff was also careful to not that variations across cultures and across genders make generalizations difficult. He’s just reporting on one characteristic that he found to be statistically significant – the gender of the characters in people’s dreams.

Demhoff concentrated on American subjects since he was most familiar with the cultural characteristics of Americans. But other researchers have studied other cultures and found some key differences.

To make sure everyone is categorizing things in a roughly similar way, Demhoff used a coding system developed in 1966 called the Hall/Van de Castle system, where most things fall into pretty simple categories like: men/women; indoor setting/outdoor setting, etc. But that system was created based on the dream journals of white, middle-class college students at Case Western in the 1950s and 60s. In general, other studies have found these categories useful too.

So, on to the results (because results don’t mean much without some context first!).

What men dream of

Demhoff asked what percentage of dreams had a negative element “such as aggressions, misfortunes, failures, and negative emotions (anger, apprehension, confusion, and sadness)…” And the results were that “men and women are similar in that 80% of men’s dreams and 77% of women’s have at least one of these negative elements.”

When it comes to positive aspects, “such as friendly interactions, good fortune, success, and happiness, 53% of dreams for both men and women have at least one of those elements. Men and women also have an equal number of dreams in which food or eating is mentioned–about 17%.”

In addition, “Both men and women are more often victims than aggressors in the aggressive interactions in their dreams, and they face the same attackers, namely, men who are not known to them (“male strangers”) and animals. On a more positive note, both men and women are equally likely to befriend another character in their dreams.”

But we started with the most reported-on finding, which is that “men dream twice as often about other men as they do about women (67% vs. 33%), and women dream equally about both sexes (48% men, 52% women).”

What’s implied by the dreams of men? Not much

And here’s where people get offended. No one is implying that men fantasize about other men. They can be someone you fight on the street, your 5th grade math teacher, your dad…whatever.

Women may also have more of a character gender balance because their dreams tend to have more characters overall. This may be a result of women’s dreams being longer overall than men’s.

But Demhoff points out that this in not universal. Even among Black Americans, men and women tended to have an equal gender breakdown in dreams. Studies of Mexican and Peruvian teens as well as German college students also showed more of a gender balance. However, in each case there were slightly more men than women in everyone’s dreams.

– WTF fun facts

Source: “The Dreams of Men and Women: Patterns of Gender Similarity and Difference” — G. William Domhoff