Why Women Freeze at the Office and What It Has to Do with Longevity

The Thermostat That Was Built for Men

It sounds like a bad joke, but the science backs it up: the temperature standards used in most office buildings date back to the 1960s. They are based on the resting metabolic rate of a 40-year-old man weighing about 70 kilograms (Kingma & van Marken Lichtenbelt, 2015). The result: most offices are cooled to around 20 to 22 degrees Celsius, a range that feels comfortable for men. For women, it often doesn’t.

What the Research Shows: Cold Costs Women Cognitive Performance

In 2019, Tom Chang (USC) and Agne Kajackaite (WZB Berlin) published a widely cited study in PLOS ONE: Battle for the thermostat: Gender and the effect of temperature on cognitive performance. In a controlled experiment with 543 participants, mathematical, verbal, and cognitive tasks were completed at room temperatures ranging from 16 to 33 degrees Celsius.

The findings were striking: women solved significantly more tasks correctly at higher temperatures. For every degree Celsius increase, their math performance improved by 1.76 percent. Men showed a reverse but much weaker effect: their performance dropped by about 0.6 percent per degree (Chang & Kajackaite, 2019).

In practical terms, this means that in a typical office at 20 degrees, many women are working below their cognitive potential. Not because they lack skill, but because the ambient temperature puts their body into a mild state of stress.

Why Women React Differently to Cold: The Biology Behind It

The difference is not imagined. It has biological roots that show up on multiple levels.

Less muscle mass, less heat production. Women have, on average, 33 percent less lean body mass than men, but only 18 percent less body surface area. That means they lose proportionally more heat than they generate. Their resting metabolic rate, the energy the body uses at rest, is considerably lower. Studies show that traditional models overestimate the female metabolic rate by up to 35 percent (Yang et al., 2021).

Hormonal regulation of body temperature. Estrogen directly influences how the body handles temperature. It promotes vasodilation, the widening of blood vessels, which causes women to lose heat more quickly through the skin. At the same time, estrogen acts on neural circuits in the hypothalamus that regulate core body temperature (Mauvais-Jarvis et al., 2021). Progesterone, on the other hand, raises core temperature slightly, which explains why temperature sensitivity fluctuates across the menstrual cycle: during the luteal phase, when progesterone is high, many women feel less cold than during the follicular phase.

Stronger peripheral vasoconstriction. When exposed to cold, blood vessels in the extremities constrict more aggressively in women than in men. The result: cold hands and feet, a classic symptom that is far from harmless. It signals the body to redistribute energy away from the extremities and toward the core. That is a stress response (Castellani & Young, 2016).

From Productivity to Cellular Aging: The Longevity Perspective

This is where it gets interesting for anyone concerned with longevity: the effects of sustained cold exposure go well beyond short-term drops in productivity.

Chronic cold stress raises cortisol. When the body constantly fights against cold, it activates the stress axis (HPA axis). That means more cortisol, the stress hormone that is useful in small doses but promotes inflammation, destabilizes blood sugar, breaks down muscle, and weakens immune defenses when chronically elevated. These are the same mechanisms that accelerate cellular aging in chronic psychological stress.

Cortisol and telomeres. The link between chronic stress and shortened telomeres, the protective caps on our chromosomes, is well established. Epel et al. (2004) showed that persistently elevated stress hormones measurably shorten telomeres. More recent meta-analyses confirm that it is not baseline cortisol, but stress reactivity, meaning how strongly the body responds to stress triggers, that is associated with shorter telomeres (Mathur et al., 2016). Women who sit for eight hours a day in an office that is too cold for their metabolism are in a sustained, low-grade stress state that increases precisely this reactivity.

Immune function under pressure. Cold exposure suppresses several components of the immune response: lymphocyte proliferation decreases, natural killer cell activity drops, and inflammatory markers can rise (Castellani & Young, 2016). Considering that chronic inflammation is one of the primary drivers of premature aging, a process researchers call inflammaging, it becomes clear that this is about much more than comfort.

Hormonal imbalance. Sustained cold exposure can place additional strain on the already sensitive hormonal system. Elevated cortisol suppresses progesterone. The thyroid has to work harder to maintain heat production. And for women in perimenopause, these added burdens can amplify existing symptoms such as exhaustion, sleep disruption, and difficulty concentrating.

What You Can Do About It

The good news: you are not helpless. Here are three approaches that work on different levels.

Actively regulate your environment. It sounds obvious but is underestimated. Layered clothing, a hot water bottle at your desk, warm drinks throughout the day: all of this helps your body spend less energy on temperature regulation. If you have the ability to influence the temperature in your workspace, use it. Research shows that a range around 24 to 25 degrees delivers the best overall productivity for mixed teams.

Strengthen your thermoregulation through lifestyle. Muscle is your biggest heat producer, but not just mechanically. When you train, your muscles release a signaling protein (myokine) called irisin. Irisin has the fascinating ability to convert white storage fat into metabolically active, heat-producing brown adipose tissue (BAT) — a process known as “browning”. Women naturally tend to have slightly more BAT than men, but chronic stress, a sedentary lifestyle, or the transition into perimenopause can diminish its function. Strength training is therefore your most effective tool to biologically upgrade your internal heating system.

Keep an eye on your hormones. If you frequently feel cold, it is worth taking a closer look at your thyroid values (not just TSH, but also fT3 and fT4), your iron status (ferritin, not just hemoglobin), and potentially your sex hormones. Hypothyroidism and iron deficiency are among the most common yet most overlooked causes of cold sensitivity in women.

The Bottom Line

Office temperature is not a luxury topic. It affects how well women think, how much stress their body has to compensate for, and in the long run, how quickly their cells age. The research is clear: offices calibrated to the male metabolism disadvantage women not just in daily performance, but potentially in their healthspan.

Awareness is the first step. The second: actively pushing back, on the individual level through lifestyle and prevention, and on the structural level through rethinking workplace design.

Sources

• Chang, T. Y. & Kajackaite, A. (2019). Battle for the thermostat: Gender and the effect of temperature on cognitive performance. PLOS ONE, 14(5), e0216362.
• Yang, L. et al. (2021). Gender differences in metabolic rates and thermal comfort in sedentary young males and females at various temperatures. Energy and Buildings, 251, 111360.
• Mauvais-Jarvis, F. et al. (2021). The Effects of Estrogens on Neural Circuits That Control Temperature. Endocrinology, 162(8), bqab087.
• Kingma, B. & van Marken Lichtenbelt, W. (2015). Energy consumption in buildings and female thermal demand. Nature Climate Change, 5, 1054–1056.
• Epel, E. S. et al. (2004). Accelerated telomere shortening in response to life stress. PNAS, 101(49), 17312–17315.
• Mathur, M. B. et al. (2016). Perceived stress and telomere length: A systematic review, meta-analysis, and methodologic considerations. Brain, Behavior, and Immunity, 54, 158–169.
• Castellani, J. W. & Young, A. J. (2016). Human physiological responses to cold exposure. Autonomic Neuroscience, 196, 68–74.