Skip to main content

Do you shiver when it’s hot outside? (hindu)

f the aircon isn’t set to Arctic temperatures in the office, and you simply don’t understand why you’re cold, read on

Your body has an in-built thermostat, a sort of climate-control mechanism that helps regulate internal temperatures. It keeps you cool when temperatures soar in summer, and changes that up when the weather turns cold. But what when you’re cold even in hot weather? “It’s natural for a person to shiver when there’s an infection or a deficiency,” says Dr Sujit Kar Purkayastha, Consultant Gastroenterologist, Peerless Hospital, Kolkata. For instance, many women who get a UTI, shiver, and you may find your child buried under a quilt when she gets the flu. There is, of course, the rare case of cold intolerance, possible in some people who are abnormally sensitive to cold temperatures, but for most, there’s a underlying cause that can be cured.

Hypothyroidism

The thyroid gland regulates heat in the body. When the gland is underactive, the body metabolism goes down and a person can feel unnecessarily cold. “A malfunctioning thyroid results in a decrease in pulse pressure, indicating poor heart function.

Blood flow is diverted from the skin, making the extremities feel cold,” says Dr Alok Prasad, consultant physician, Irene Hospital, Delhi. Visit a doctor to get tested if you notice these signs. Most people get their normal energy levels and feel warmer soon after starting treatment.

Anaemia

Iron is a key mineral that helps your red blood cells carry oxygen throughout your body, bringing heat and other nutrients to every cell in your system, says Dr Thillai Vallal, senior consultant cardiologist, Venkataeswara Hospitals, Chennai. Without enough iron, red blood cells can’t effectively do their job, and you tend to feel cold. Iron is also crucial because a deficiency can make your thyroid lethargic, leading to hypothyroidism, which further leaves you cold. A blood test will pick up any problems, and you’ll be prescribed medication. Iron supplements can help, but the best way to boost your iron intake is through healthy food. “Include plenty of iron-rich food in your diet, such as lean meats, dark green vegetables, pulses and dried fruits, and pair vegetarian food with citrus fruit high in vitamin C,” says Naini Setalvad, a nutritionist based in Mumbai.

Poor circulation

If your extremities (your fingertips and toes) are the only parts of your body that feel cold, it could be because of poor blood circulation. “The reason could range from your heart’s inability to pump blood effectively, to narrowing of blood vessels or a blockage in the arteries,” says Dr Pavan Kumar, a Mumbai-based cardiac surgeon. It’s a warning sign that you shouldn’t take lightly.

If you’re a smoker, all the more reason to get it checked.

Low body weight

When you’re underweight, you may lack an adequate amount of body fat to ‘insulate’ you from the cold. If you aren’t eating much, then your metabolism may struggle to create enough heat. This happens especially if you’re on an unreasonable diet, or if you struggle with an eating disorder. A healthy diet, containing whole, healthy foods that have protein, fat, and carbohydrate, is the only way out, says Setalvad. Check whether you’re getting enough B vitamins. These are required by the body to convert the food we eat into energy. You can find this group of vitamins in grains such as brown rice, barley and oats, as well as lean proteins and oily fish.

Dehydration

This may seem counter-intuitive. After all, we drink water to cool down. Water traps heat and releases it in small doses, regulating body temperature. Aim for the requisite eight glasses a day, and make sure to hydrate if you’ve been working out hard.

Sleep deprivation

Researchers still haven’t got the answer to why this happens, but studies suggest that one of the reasons could be that not getting enough sleep could affect how efficiently your hypothalamus (regulates body temperature) works. Also, when you’re fatigued, your metabolism works at a more sluggish pace, producing less heat and a slower circulation.

Bacterial and viral infections

Whether you get a slight throat infection, or food poisoning, you’re bound to feel cold, because the thermostat is set at a higher temperature, says Dr Vallal. It’s the body’s way of fighting against bacteria or viruses that are sensitive to temperatures.

Comments

Popular posts from this blog

NGT terminates chairmen of pollution control boards in 10 states (downtoearth,)

Cracking the whip on 10 State Pollution Control Boards (SPCBs) for ad-hoc appointments, the National Green Tribunal has ordered the termination of Chairpersons of these regulatory authorities. The concerned states are Himachal Pradesh, Sikkim, Tamil Nadu, Uttarakhand, Kerala, Rajasthan, Telangana, Haryana, Maharashtra and Manipur. The order was given last week by the principal bench of the NGT, chaired by Justice Swatanter Kumar. The recent order of June 8, 2017, comes as a follow-up to an NGT judgment given in August 2016. In that judgment, the NGT had issued directions on appointments of Chairmen and Member Secretaries of the SPCBs, emphasising on crucial roles they have in pollution control and abatement. It then specified required qualifications as well as tenure of the authorities. States were required to act on the orders within three months and frame Rules for appointment [See Box: Highlights of the NGT judgment of 2016 on criteria for SPCB chairperson appointment]. Having

High dose of Vitamin C and B3 can kill colon cancer cells: study (downtoearth)

In a first, a team of researchers has found that high doses of Vitamin C and niacin or Vitamin B3 can kill cancer stem cells. A study published in Cell Biology International showed the opposing effects of low and high dose of vitamin C and vitamin B3 on colon cancer stem cells. Led by Bipasha Bose and Sudheer Shenoy, the team found that while low doses (5-25 micromolar) of Vitamin C and B3 proliferate colon cancer stem cells, high doses (100 to 1,000 micromolar) killed cancer stem cells. Such high doses of vitamins can only be achieved through intravenous injections in colon cancer patients. The third leading cause of cancer deaths worldwide, colon cancer can be prevented by an intake of dietary fibre and lifestyle changes. While the next step of the researchers is to delineate the mechanisms involved in such opposing effects, they also hope to establish a therapeutic dose of Vitamin C and B3 for colon cancer stem cell therapy. “If the therapeutic dose gets validated under in vivo

SC asks Centre to strike a balance on Rohingya issue (.hindu)

Supreme Court orally indicates that the government should not deport Rohingya “now” as the Centre prevails over it to not record any such views in its formal order, citing “international ramifications”. The Supreme Court on Friday came close to ordering the government not to deport the Rohingya. It finally settled on merely observing that a balance should be struck between humanitarian concern for the community and the country's national security and economic interests. The court was hearing a bunch of petitions, one filed by persons within the Rohingya community, against a proposed move to deport over 40,000 Rohingya refugees. A three-judge Bench, led by Chief Justice of India Dipak Misra, began by orally indicating that the government should not deport Rohingya “now”, but the government prevailed on the court to not pass any formal order, citing “international ramifications”. With this, the status quo continues even though the court gave the community liberty to approach i