Hemorrhoids in women are driven by a mix of pressure, hormones, and tissue changes that shift across different life stages. About half of all people develop hemorrhoids by age 50, with the highest risk between ages 45 and 65. But women face several unique triggers, from pregnancy and childbirth to hormonal fluctuations during the menstrual cycle and menopause, that men simply don’t experience.
How Hemorrhoids Form
Everyone has cushions of tissue lining the anal canal, supported by small blood vessels and connective tissue. Hemorrhoids develop when pressure causes those blood vessels to swell and the supporting tissue stretches out. Over time, the swollen tissue can bulge or prolapse through the anal canal.
The most common driver of that pressure is straining during bowel movements, usually because of hard, small stools from a low-fiber diet. Sitting on the toilet for extended periods also creates a tourniquet-like effect that slows blood flow in the area, letting blood pool and the vessels engorge. As you age, the connective tissue holding everything in place naturally weakens, making prolapse more likely even with less pressure.
Pregnancy: The Biggest Female-Specific Trigger
Pregnancy is the single most common reason women develop hemorrhoids earlier or more severely than men. Several changes happen at once. Your growing uterus puts direct physical pressure on the veins around the rectum and anus, making it harder for blood to flow back toward the heart. Blood pools in those vessels, and they swell. At the same time, your total blood volume increases significantly during pregnancy, forcing veins throughout your body to handle a heavier load. Rectal veins, which already lack valves to prevent backflow, are especially vulnerable.
Constipation compounds the problem. Rising progesterone levels relax smooth muscle throughout the digestive tract, slowing the movement of food and waste. Slower transit means drier, harder stools, which means more straining. Many pregnant women also become less physically active, especially in the third trimester, which further slows digestion.
The result: hemorrhoids are common well before delivery even begins. But childbirth itself adds another layer of risk.
Childbirth and Postpartum Hemorrhoids
Vaginal delivery places enormous downward pressure on the pelvic floor and anal tissues. Prolonged pushing during the second stage of labor, particularly when it lasts more than 20 minutes, is a well-established risk factor. One review found that 28% of women had hemorrhoids during their postnatal hospital stay, and a separate study found that nearly 40% were diagnosed with hemorrhoids one month after giving birth.
How the pushing phase is managed matters. Women who pushed spontaneously and allowed a slower delivery of the baby’s head had fewer hemorrhoid symptoms three weeks postpartum compared to women who were coached through rapid, forceful pushing. That difference was significant enough to cut the odds of symptomatic hemorrhoids by roughly 40%.
Postpartum hemorrhoids often improve on their own within weeks, but for some women they persist for three months or longer, especially if constipation continues during recovery or breastfeeding.
Hormonal Shifts Across the Menstrual Cycle
Pregnancy isn’t the only time hormones affect your bowel habits. Progesterone rises and falls throughout each menstrual cycle, peaking in the second half (the luteal phase) before your period. That rise slows digestion, which is why many women experience constipation, bloating, and gas in the days leading up to their period. If you’re already prone to hemorrhoids, this cyclical constipation can trigger flare-ups on a roughly monthly basis.
Estrogen also influences gastrointestinal motility, and the interplay between the two hormones can cause alternating constipation and diarrhea across the cycle. Both extremes are problematic: straining from constipation creates direct pressure, while frequent loose stools can irritate existing hemorrhoids.
Menopause and Tissue Weakening
After menopause, declining estrogen levels affect far more than hot flashes. Estrogen helps maintain the strength and elasticity of blood vessels, connective tissue, and pelvic floor muscles. As levels drop during perimenopause and menopause, rectal veins lose structural support, the connective tissue anchoring the anal cushions weakens, and pelvic floor muscles become less toned. All three changes make it easier for hemorrhoidal tissue to swell and prolapse.
Hormonal changes during menopause also slow digestion independently, increasing the likelihood of chronic constipation. This combination of weaker tissue and harder stools is a major reason hemorrhoid prevalence peaks in the 45-to-65 age range.
Diet, Habits, and Other Contributing Factors
Regardless of hormonal status, daily habits play a large role. A low-fiber diet produces small, hard stools that require more straining to pass. Federal dietary guidelines recommend about 28 grams of fiber per day for a standard 2,000-calorie diet, but most Americans get far less than that. Increasing fiber from fruits, vegetables, whole grains, and legumes softens stool and reduces the pressure that drives hemorrhoid formation. Drinking enough water is essential for that fiber to work properly.
Prolonged sitting, whether at a desk or on the toilet, restricts blood flow in the anal area. If you spend a lot of time sitting for work, regular movement breaks can help. Scrolling your phone on the toilet extends sitting time in the worst possible position for rectal veins.
Chronic heavy lifting, obesity, and chronic cough or sneezing from allergies or respiratory conditions all raise intra-abdominal pressure repeatedly, contributing to hemorrhoid development over time. Pelvic floor weakness from any cause, not just childbirth, reduces the structural support around the anal canal.
Symptoms Worth Paying Attention To
The most common sign of internal hemorrhoids is painless bright red bleeding during a bowel movement, often noticed on toilet paper or in the bowl. You may also notice tissue that bulges out during straining and either retracts on its own or needs to be pushed back. External hemorrhoids tend to cause more pain, itching, and swelling around the anus.
Rectal bleeding should not automatically be attributed to hemorrhoids. If you notice bleeding without an obvious source, or if it comes with abdominal pain, bloating, new constipation, or worsening constipation, further evaluation is warranted. The same applies if bleeding continues after hemorrhoid treatment has otherwise been successful. Women who are due for routine colorectal cancer screening should not delay it because they assume hemorrhoids explain their symptoms.