Bloating, acne flare-ups and sudden weight gain are symptoms many women experience at different stages of life. While these issues are often blamed on diet, stress or lifestyle habits, hormones are frequently the hidden cause.
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Hormones control key processes in the body, including metabolism, appetite and skin oil production, meaning even small fluctuations can trigger noticeable physical changes. These shifts commonly occur during life stages such as the menstrual cycle, pregnancy and menopause.
Dr Donald Grant, GP and Senior Clinical Advisor at The Independent Pharmacy, has revealed six hormonal changes that could be behind bloating, acne and sudden weight gain.
Dr Donald Grant, GP said:
“Hormones act as chemical messengers throughout the body, influencing a wide range of functions including metabolism, digestion and skin health. When hormone levels fluctuate, even temporarily, it can trigger symptoms that many women may not immediately associate with hormonal changes.”
Menstrual Cycle Hormone Fluctuations
“In the days leading up to menstruation, progesterone levels rise while oestrogen levels begin to fall. This hormonal shift can slow digestion and affect the way the body processes fluids, which often leads to bloating or a feeling of abdominal fullness for many women. At the same time, the body may retain more water, causing temporary weight fluctuations that can feel like sudden weight gain on the scales.
“Hormonal changes during this phase can also stimulate the sebaceous glands in the skin, increasing oil production. This excess oil can clog pores and create an environment where acne-causing bacteria thrive, which is why many women notice breakouts, particularly around the chin and jawline, in the days leading up to their period.”
Oestrogen Imbalances
“Oestrogen plays an important role in regulating metabolism, appetite and how the body stores fat. When oestrogen levels fluctuate or decline, something that can occur during perimenopause, menopause or certain hormonal imbalances, it can alter the way the body distributes fat. Many women notice that weight is more easily stored around the abdomen during these periods, even if their diet or activity levels haven’t significantly changed.
“Changes in oestrogen levels can also have a noticeable impact on the skin. Oestrogen helps maintain skin hydration and supports collagen production, which keeps the skin firm and resilient. When levels drop, the skin may become drier and more sensitive, and the balance of oil production can shift, which may contribute to breakouts or changes in skin texture.”
Increased Androgen Levels
“Androgens, sometimes referred to as ‘male hormones’, are also naturally present in women and play a role in regulating oil production in the skin. However, when androgen levels increase or become imbalanced, they can overstimulate the sebaceous glands, leading to excess sebum production. This excess oil can mix with dead skin cells and block pores, increasing the likelihood of acne breakouts.
“This type of hormonal acne often appears along the lower face, particularly around the jawline, chin and neck. It can become more noticeable during certain hormonal fluctuations, such as around the menstrual cycle, or in conditions like polycystic ovary syndrome (PCOS), where androgen levels may be elevated.”
Pregnancy Hormones
“During pregnancy, hormone levels rise significantly to support the growth and development of the baby. Hormones such as oestrogen and progesterone increase rapidly, which can influence metabolism, appetite and the way the body stores fat. As a result, many women experience natural weight gain during pregnancy, along with occasional bloating due to changes in digestion and fluid retention.
“These hormonal shifts can also affect the skin. Increased hormone levels may stimulate the sebaceous glands, leading to breakouts for some women, while others may notice their skin becoming more sensitive or reactive. It’s very common for skin texture or oil production to change throughout pregnancy as the body adapts to these hormonal changes.”
Perimenopause
“Perimenopause is the transitional stage before menopause when hormone levels, particularly oestrogen and progesterone, begin to fluctuate more unpredictably. These hormonal shifts can affect metabolism and how the body stores fat, which is why some women notice weight gain during this stage, even if their diet and activity levels haven’t changed significantly.
“Changes in hormone levels can also affect digestion and fluid balance, which may contribute to bloating for some women. At the same time, declining oestrogen levels can influence skin health by reducing collagen and altering oil production, meaning some women may experience increased dryness, sensitivity or occasional breakouts as their hormones fluctuate.”
Stress Hormones
“Stress can also have a significant impact on hormonal balance. When the body experiences ongoing stress, it releases higher levels of cortisol, often referred to as the ‘stress hormone’. If cortisol levels remain elevated for long periods, it can increase appetite, particularly cravings for high-calorie or sugary foods, and encourage the body to store more fat around the abdomen.
“Chronic stress can also affect other bodily processes. Elevated cortisol levels may increase inflammation and stimulate oil production in the skin, which can worsen acne or other skin concerns. In addition, stress can disrupt digestion and slow gut motility for some people, contributing to symptoms such as bloating, discomfort or irregular digestion.”
“While hormonal fluctuations are a normal part of life, certain symptoms may indicate that hormones are influencing how the body is functioning. Some common signs include persistent bloating without clear dietary triggers, acne that appears around the chin or jawline, unexplained weight gain or changes in body composition, increased food cravings, as well as fatigue or disrupted sleep patterns.
“Occasional symptoms are usually nothing to worry about, but if these changes become persistent or severe, it’s important to speak with a GP. Understanding the role hormones play can help women identify potential causes and find the most appropriate ways to manage their symptoms safely.”
Dr Donald Grant, GP and Senior Clinical Advisor at The Independent Pharmacy
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