Milly Gaines
It is common to feel colder when dieting and losing weight. This is because the body's metabolism may slow down to protect its heat-producing store of calories. In addition, when eating a low-calorie diet, one might be missing out on essential nutrients such as iron, vitamin B12, and folate, which can lead to impaired body temperature regulation. A low-fat diet can also increase feelings of being cold as fat is an insulator. Other causes of feeling cold while dieting include hormonal irregularities, nutritional deficiencies, and certain medical conditions. Feeling cold while dieting is usually temporary, and the body should adjust to its new weight over time.
| Characteristics | Values |
|---|---|
| Cause | Loss of body fat, a natural insulator, can lead to cold intolerance. |
| Cause | Eating less food on a low-calorie diet can lead to a lack of essential nutrients like iron, vitamin B12, and folate. |
| Cause | Intermittent fasting can make the problem worse. |
| Cause | Low insulin levels due to skipping meals or cutting back on carbs can lower body temperature. |
| Cause | Fluctuations in thyroid hormone levels can occur due to rapid weight loss, impacting body temperature. |
| Cause | Hormonal irregularities, nutritional deficiencies, and certain medical conditions may also be the cause. |
| Effect | Increased sensitivity to cold environments. |
| Effect | Possible impaired body temperature regulation. |
| Solution | Gradually achieve realistic weight-loss goals to allow the body to adjust. |
| Solution | Ensure a balanced diet with sufficient nutrients and calories (minimum 1200 calories per day). |
| Solution | Consult a doctor or consider dietary supplements if necessary. |
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What You'll Learn
- Low-calorie diets can cause a deficiency in iron, vitamin B12 and folate
- The body lowers its temperature to conserve energy
- Fat is an insulator, so losing fat quickly makes you sensitive to the cold
- Weight loss increases circulating estrogen in the blood, which helps to cool the body
- Intermittent fasting and caffeine can make the problem worse
Low-calorie diets can cause a deficiency in iron, vitamin B12 and folate
It is common to feel cold when on a low-calorie diet. This is because the body lowers its temperature to conserve energy. In addition, fat is an insulator, so losing a lot of fat quickly can make you more sensitive to the cold.
Low-calorie diets can also cause a deficiency in iron, vitamin B12 and folate. For example, menstruating women may find that a low-calorie diet makes them low in iron, which can lead to impaired body temperature regulation. Not getting enough iron can result in anaemia, a condition in which the body struggles to produce enough red blood cells to carry oxygen to internal organs and tissues. Iron deficiency can also cause mood changes, fatigue, brittle nails and headaches.
Vitamin B12 is another essential nutrient that can be lacking in low-calorie diets. It is found in many animal products, including meat, fish, eggs and dairy. Folate, a type of B vitamin, is also commonly deficient in those on low-calorie diets. Folate is important for the body's ability to produce red blood cells and synthesize DNA.
If you are feeling cold while dieting, it is important to consider your nutrient intake. Dr Gonsahn-Bollie recommends "looking at the quality of the foods you're eating" and, if necessary, adding a multivitamin to your routine. It is also important not to eliminate food groups, as this can lead to nutritional deficiencies.
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The body lowers its temperature to conserve energy
Feeling cold while dieting is a common phenomenon, and there are several reasons for this. One of the main reasons is that the body lowers its temperature to conserve energy when there is a calorie deficit. This is particularly true if you are skipping meals or consuming too few calories. Your body's priority shifts to supporting your vital organs and brain, rather than generating heat to warm the body.
This reduction in metabolic rate and body temperature is a natural response to caloric deprivation, and it can result in a person feeling cold even in comfortable environments. The body's metabolism may slow down to protect its heat-producing store of calories, and this can make someone feel colder than usual. This is especially true for people who have lost a lot of weight or have a very lean frame, as fat acts as an insulator.
Additionally, a low-calorie diet can lead to nutritional deficiencies, such as a lack of iron, vitamin B12, and folate. Iron deficiency, in particular, can impair the body's ability to regulate temperature, leading to a feeling of coldness. It is important to ensure a balanced diet and not eliminate food groups, as this can help maintain adequate nutrient intake and potentially reduce feelings of coldness.
It is worth noting that the body should adjust to a new weight and regulate temperature accordingly once a person has reached their goal weight and started a maintenance program. However, if the cold intolerance becomes unbearable, it is advisable to consult a physician to rule out any underlying medical causes, such as hypothyroidism, which can also cause feelings of cold.
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Fat is an insulator, so losing fat quickly makes you sensitive to the cold
Fat is a natural insulator for the body, and losing a lot of fat quickly can make you more sensitive to the cold. This is because your body has lost its protective layer of insulation, making it harder to retain heat. The body's core has lost a significant part of its protection against heat loss, and the body must then prioritise supporting vital organs and the brain over creating heat to warm the body. This can result in a person feeling cold even in a comfortable environment.
The body's metabolism may also slow down during weight loss to protect the body's heat-producing store of calories, which can also lead to a cold feeling. Eating too few calories can also cause a person to miss out on essential nutrients such as iron, vitamin B12 and folate, which can lead to nutritional deficiencies and a greater sensitivity to cold.
The sensation of feeling cold while dieting is a common phenomenon, and it can be potentially avoided with gradual and realistic weight-loss goals. It is recommended that a person consumes a minimum of 1,200 calories per day, even when trying to lose weight. A person's body should also adjust to a new weight and regulate its temperature once their weight stabilises.
In the meantime, people who feel cold while dieting can try adding more whole foods to their diet and taking a multivitamin to ensure they are getting enough nutrients. It is also important not to eliminate food groups, as this can lead to nutritional deficiencies and make the problem worse.
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Weight loss increases circulating estrogen in the blood, which helps to cool the body
Weight loss and dieting are often achieved by eating less food to create a calorie deficit, which can lead to a lack of essential nutrients. Nutritional deficiencies can cause an increased sensation of coldness. For example, low iron levels can lead to impaired body temperature regulation and anaemia, where the body struggles to produce enough red blood cells, resulting in coldness.
Additionally, rapid weight loss can cause hormonal irregularities, which may also lead to feeling cold. The body's hormones, including thyroid hormones, have to adjust to rapid weight loss. Fluctuations in thyroid hormones can cause lower body temperature. Furthermore, skipping meals or drastically reducing carbohydrate intake can lead to low insulin levels, which can also decrease body temperature.
While estrogen is a female sex hormone, it is also produced in small amounts by the adrenal glands and fatty tissue. Estrogen has been linked to weight gain, with higher levels causing weight gain and lower levels potentially leading to weight loss. Estrogen helps regulate metabolism and body weight, and it controls hunger signals, affecting calorie consumption. Therefore, changes in estrogen levels can lead to changes in body weight.
However, the link between weight loss and increased circulating estrogen in the blood, resulting in a cooling effect, is not clearly established. While estrogen may influence weight gain or loss, it is just one of many factors involved in body weight regulation. These factors include dietary nutrients, physical activity, metabolism, appetite, and other hormones such as leptin, insulin, and growth hormones. Thus, while estrogen may play a role in weight changes, it is part of a complex interplay of hormones and physiological processes.
In summary, weight loss can lead to feelings of coldness due to nutritional and hormonal factors. While estrogen may be one of the hormones involved, the direct relationship between weight loss and increased circulating estrogen causing a cooling effect requires further exploration.
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Intermittent fasting and caffeine can make the problem worse
Intermittent fasting and caffeine can make the problem of feeling cold while dieting worse. This is because during intermittent fasting, your body initiates fat burning, converting fat stores into energy. This is known as fat adaptation, which happens when your body goes on a low-carb diet or an intermittent fasting plan. As your body transitions from burning glucose to utilising fatty acids and ketones for fuel, the mitochondria undergo a period of adaptation, and you may feel colder. This is a temporary response as your metabolism shifts into ketosis and your cells adapt to using fat as the primary fuel source.
During digestion, the body redirects large amounts of blood to the digestive system and vital organs to support nutrient absorption. This process generates heat, contributing to a warmer body temperature. However, as there is no food to digest during fasting, blood flow is redistributed, and less blood flows to the extremities and skin, which can make you feel cold. This is known as adipose tissue blood flow, and it helps your body use fat as an energy source.
Additionally, caffeine may also contribute to feeling cold. Caffeine increases metabolic effects and fat oxidation. As your body transitions to burning fat, you may feel colder. However, bulletproof coffee, which combines coffee, unsalted butter, and MCT oil, can help speed up the fat adaptation process and make you feel warmer.
It is important to note that feeling cold while dieting can be due to several factors, including hormonal irregularities, nutritional deficiencies, and certain medical conditions. If you are feeling cold, it is recommended to consult your doctor to rule out any underlying health issues.
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Frequently asked questions
Feeling cold while dieting is a common phenomenon. It can be caused by a loss of body fat, which acts as insulation. Additionally, a low-calorie diet can cause a decrease in iron levels, which can impair temperature regulation. Other nutritional deficiencies, hormonal irregularities, and certain medical conditions may also be the cause.
It is important to ensure you are still getting essential nutrients while dieting. Dr. Gonsahn-Bollie recommends adding more whole foods to your diet and taking a multivitamin. You should also avoid eliminating food groups and focus on gradual weight loss to reduce the risk of feeling cold.
Yes, there are several other potential causes. These include hypothyroidism, iron deficiency, sleep deprivation, and Raynaud's phenomenon. It is also important to consider the external temperature and your physical activity, as these can impact how cold you feel.
