Yes, men can lactate, though it's uncommon and usually requires hormonal changes, often triggered by medications, pituitary tumors, extreme stress/malnutrition, or deliberate hormone therapy, as all humans have mammary tissue capable of producing milk if stimulated by high prolactin levels. The medical term for milk production outside of pregnancy/nursing is galactorrhea, and it can be induced in cisgender men and transgender women through nipple stimulation and hormones.
Human male lactation
Spontaneous production of milk not associated with childbirth, known as galactorrhea, can occur in human males and females. Case reports of lactation induced in transgender women have been published.
Discharge from a man's breast is not normal and should always be checked by a doctor. Nipple discharge may be a symptom of an infection, a side effect of a medicine, or maybe a symptom of breast cancer. Treatment depends on what is causing the nipple discharge. You may need more tests to find out the cause.
Nipple stimulation promotes milk production because when your body thinks that someone's trying to feed from you, it responds by increasing prolactin secretion. However, it usually takes several weeks of breast pumping or manual stimulation to actually start producing milk.
Sexual fantasy: Your partner may be turned on by your lactating breasts, or they may have a sexual fantasy that involves breastfeeding. As long as you both feel comfortable, this is a fantasy that you can safely experience with your partner.
It's also possible for men to lactate. Lactating in a man can be a sign of an underlying medical condition that shouldn't be ignored. Conditions like hormonal imbalance, tumors, or hypothyroidism can cause lactation in men. Other causes of male lactation can include medications, supplements, or nipple stimulation.
Among them was a South American man, observed by Prussian naturalist Alexander von Humboldt, who subbed as wet nurse after his wife fell ill as well as male missionaries in Brazil that were the sole milk supply for their children because their wives had shriveled breasts.
Like the female breast, the male breast is composed of a nipple and rudimentary branching duct system composed of glandular epithelial elements in a stroma of collagen and adipose tissue. However, in contrast to the female breast, there is no lobule formation.
Causes of gynaecomastia can include:
It's also normal to be sexually interested in your partner's breasts even when they're producing milk. Not to mention, some people are more sensitive to breast stimulation in the postpartum phase. Generally speaking, it's perfectly safe to breastfeed your husband or partner, but there are some aspects to consider.
Is that safe? Yup! As long as you're healthy (and HIV-free), there's nothing harmful in your breast milk. After all, it's made for human consumption, so it's fine to eat.
Gynecomastia can happen when the amount of testosterone in the body drops compared with estrogen. The decrease can be caused by conditions that lower testosterone or block its effects. Or it can be caused by conditions that raise the estrogen level.
“I think with a lot of men, there's just a curiosity of what it tastes like, and what it would be like to nurse,” said Wendy Haldeman, who co-founded the Pump Station with Harvey. “Certainly men suck on nipples during sex, so they're gonna get milk.” But husband breastfeeding can be as much about utility as curiosity.
Galactorrhea/breast discharge is a rare complaint in males of any age. Although galactorrhea is commonly associated with a neuroendocrine disorder or drug ingestion, the work-up in each, including basal prolactin level, was normal.
Adult nursing relationship
Such a relationship may form as an expression of close intimacy and mutual tenderness, and may even exist without sex. Breastfeeding can have a strong stabilizing effect on the partnership. The person breastfeeding may experience orgasms or a pleasurable let-down reflex.
Typically, men don't produce enough of the hormone prolactin to lactate. Hypothyroidism, a pituitary tumor, certain liver problems, some medications, and feminizing hormone therapy can potentially induce lactation in men.
If you're not pregnant, inducing lactation requires medication that mimics hormones your body makes during pregnancy. Suckling from the nipple can initiate lactation, either with a breast pump or by a baby.
High doses of testosterone can suppress lactation.
The "4-4-4 rule" for breast milk is a simple storage guideline: fresh milk is good for 4 hours at room temperature (up to 77°F/25°C), for 4 days in the refrigerator (39°F/4°C or colder), and up to 4-6 months (or longer) in a standard freezer (0°F/-18°C). It's a handy mnemonic, though some organizations like the CDC recommend up to 6 months in the freezer and the AAP up to 9 months, with deeper freezers offering even longer storage.
If your baby is younger than 6 months old and you're away from each other for long stretches during the day, pump or hand express every 3 hours to maintain your supply. If your milk supply still seems low and you're concerned, talk to your doctor or a lactation consultant.
The 30-30-30 pumping method is a power pumping technique to increase milk supply by mimicking cluster feeding: pump for 30 minutes, rest for 30 minutes, then pump for another 30 minutes, signaling your body to make more milk. This time-consuming, one-hour block aims to boost prolactin levels, with results often seen in 3-7 days, and is done once or twice daily as part of your regular schedule, replacing standard sessions.
Overall, the research team found that human milk was most often described as having a neutral, creamy, and sweet odor, mostly sweet and some bitter tastes, and a thin, watery, smooth, and fatty mouthfeel.
Most methods use some combination of mechanical stimulation using hospital grade, electric breast pumps, as well as medications. Medication typically means higher doses of estradiol and progesterone, along with a medication called domperidone.