WHY ARE MY BOOBS DIFFERENT SIZES – AND WILL THEY GET BIGGER POST-MENOPAUSE? 9 QUESTIONS ABOUT BREASTS YOU’VE ALWAYS WANTED TO ASK, ANSWERED

Most of us are au fait with our breasts, even if we’re not setting aside dedicated time to check them every month (which, by the way, you absolutely should be), you’d have to go out of your way not to see them when you’re taking a shower, having sex or getting dressed in the morning.

It’s only natural, then, that many of us have questions about our boobs we’d like to have answered. But unless you’re worried about specific symptoms, you very rarely get the chance to ask an expert everything you want to know. And in some cases, a quick google just doesn’t cut the mustard.

9 breast-related questions you’ve always wanted to ask

So, in a bid to give you the answers you’ve been craving, we spoke to Professor Zoe Winters, a senior consultant breast cancer surgeon and breast specialist. From why the nipple and areola are a different colour to the rest of the boob to what happens to your breasts post-menopause, we asked her some of the random questions you’ve been pondering but haven’t had the chance to ask. Bookmark this for later.

1. One of my boobs is bigger than the other – is that normal?

“The answer to this lies in basic embryology – but simply put, yes,” Winters says. “In the womb, we’re made up of three layers: the outer layer, called the ectoderm; the middle layer, called the mesoderm; and the inner layer, called the endoderm. These three layers develop in two parts, which join together as we continue to grow in the womb, kind of like a book being closed to create a whole. Because these sides develop separately, they’re not symmetrical – so when they come together, it’s normal to see those slight differences.”

2. Why are the nipples and areola a different colour from the rest of the breast?

“The areola (the area surrounding the nipple) is a skin-related structure, and it’s a different colour because it contains higher levels of melanin,” Winters says. “It’s believed this acts as a visual cue for infants so that they can identify the feeding source. It’s normal for this colour to change throughout your life. Genetics are one factor, but things like pregnancy and hormonal fluctuations can also cause changes. However, if you notice any significant changes in your nipple colour and appearance, it’s worth visiting your GP.” 

3. What are the white dots around my nipple?

“As well as having hair follicles, the areola also has sweat and sebaceous glands,” Winters explains. “Some women have these white protuberances on their areola and think that’s abnormal, but these are the sebaceous glands known as Montgomery’s tubercles which help to keep the areola lubricated as the baby feeds.”

4. What does breast tissue consist of?

“Breast tissue is primarily composed of sacs (or glands), fat and other types of connective tissue,” Winters explains. “Those sacs are predominantly stimulated by progesterone and are connected to ducts (the channels through which milk flows towards the nipple). There are about 15–20 of these milk-producing sacs attached to a duct network that looks kind of like a wheel with spokes going into the centre. The rest of the breast (around 85%) is made up of connective tissue. That includes fat (there’s a lot of fat) and the Cooper’s ligaments – fibrous tissue that gives the breast its structure and shape. Just under the surface of the nipple, you also have muscle, which is why if you stimulate the muscle, you see it contract and the nipple stands erect. And then you’ve also got blood vessels, nerves and lymphatic channels.”

5. My nipples have been super sensitive to the cold throughout my pregnancy – why?

“Pregnancy is a very hormonal time, and breast tissue is sensitive to female hormones like oestrogen, progesterone and prolactin (the hormone that tells your boobs to produce milk),” Winters says. “These hormones stimulate the breast tissue, leading to increased blood flow and the ducts secreting fluid into the lumen – the breast’s internal cavity. This means that the breast tissue is more sensitive, firmer and more stimulated. So any external stimulation – like the cold – can lead to increased sensation.” 

6. What determines breast size?

“Breast size, shape and composition are primarily determined by genetics,” Winters says. “You inherit all this from a female relative on either your mother’s or your father’s side. The amount of body fat you have can also influence your breast size; if you gain weight, it’s normal for your breast size to increase; if you lose weight, it’ll likely decrease. And if your breasts are made up of more fat than ducts, your breast size is more likely to change as your weight fluctuates. On the other hand, if you have more duct tissue than fat (this is more common in younger women), then hormonal changes are more likely to influence the size.”

7. My breasts look very different post-partum – will they ever go back to how they were before?

“It’s normal for your breasts to change throughout your life; you’re never going to retain the exact same shape you developed during puberty. During pregnancy, your breasts stretch as the ducts are filled with milk and they’re stimulated by oestrogen and prolactin. Eventually, they have to decompress, but because the skin has been stretched, it takes a while for the elasticity to come back. Factors like how young you are and your breast composition will dictate how much of that elasticity you’re likely to get back.” 

8. Are some women more prone to mastitis?

“Mastitis is an inflammatory response in the breast tissue which leads to enlargement and tenderness,” Winters says. “Some conditions can make you more prone to mastitis, but there are many factors that can also increase your risk, such as stagnant milk lingering in the ducts, the bacteria that make up your skin microbiome and the hygiene of the nipple itself. But the breast is not a sterile structure and breast milk contains bacteria, so it’s not hard for bacteria to get into the breast.”

9. Will my boobs get bigger post-menopause?

“While the hormones that stimulate breast tissue decrease post-menopause, many women experience an increase in weight, and this can lead to an increase in breast size,” Winters says. “It’s also normal for menopausal women to see an increase in their fat-to-duct-tissue ratio, as the ductal tissue becomes thinner and less pronounced as we age. And that means any weight gain will have a bigger impact on the breast size.” 

Images: Getty

2026-02-11T13:03:27Z