Cold Air Could Help You Lose Weight – Το κρύο αδυνατίζει

cold air

Turning the central heating down not only saves money but could also keep you slim, scientists claim.

Evidence suggests that being cold may be a healthy and sustainable way to lose weight, experts believe.

Conversely, warm and cosy homes and offices may be contributing to expanding waistlines, it is claimed.

The theory from Dutch scientists follows 10 years of research into the effects of the cold on metabolism.

It suggest that a more variable indoor temperature, one that more closely mirrors temperatures outside, may be beneficial.

At least among young and middle-aged people, non-shivering heat production in response to feeling cold can account for up to 30 per cent of the  body’s energy budget, say the scientists.

That means lower temperatures can significantly increase the number of calories burned up instead of being stored as fat.

Lead researcher Dr Wouter van Marken Lichtenbelt, from Maastricht University Medical Centre, said: ‘Since most of us are exposed to indoor  conditions 90 per cent of the time, it is worth exploring health aspects of ambient temperatures.

‘What would it mean if we let our bodies work again to control body temperature?

‘We hypothesise that the thermal environment affects human health and more  specifically that frequent mild cold exposure can significantly affect  our energy expenditure over sustained time periods.’

One research group in Japan had shown a decrease in body fat after volunteers spent two hours a day at 17C  for six weeks, said the Dutch scientists.

The Maastricht team also found that people got accustomed to the cold over time.

After six hours a day in the cold for a period of 10 days, levels of heat-generating brown fat in the body increased and people became more comfortable and shivered less.

Writing in the journal Trends in Endocrinology & Metabolism, the researchers concluded: ‘Indoor temperature in most buildings is regulated to minimise the percentage of people dissatisfied. This results in relatively high indoor temperatures in wintertime.

‘This is evident in offices, in dwellings and is most pronounced in care centres and hospitals. By lack of exposure to a varied ambient temperature, whole populations may be prone to develop diseases like obesity. In addition, people become vulnerable to sudden changes in ambient temperature.’

Το κρύο αδυνατίζει

maastricht university

Η συχνή έκθεση σε μέτριο κρύο αποτελεί ένα υγιεινό τρόπο αδυνατίσματος, σύμφωνα με Ολλανδούς επιστήμονες, που μελετούν το ζήτημα εδώ και μια δεκαετία. Όπως υποστηρίζουν, τα ζεστά και άνετα σπίτια και γραφεία μας ευθύνονται σε ένα βαθμό που παχαίνουμε. Γι’ αυτό προτείνουν να κατεβάσουμε τον θερμοστάτη, αν θέλουμε να χάσουμε κιλά, συνδυάζοντας τη σωματική άσκηση με το να περνάμε τον χειμώνα περισσότερη ώρα σε σχετικά χαμηλή θερμοκρασία.
Οι ερευνητές, με επικεφαλής τον Βάουτερ βαν Μάρκεν Λίχτενμπελτ του Ιατρικού Κέντρου του πανεπιστημίου του Μάαστριχτ, που έκαναν τη σχετική δημοσίευση στο περιοδικό για θέματα ενδοκρινολογίας και μεταβολισμού «Trends in Endocrinology and Metabolism», αναφέρουν ότι η χαμηλή θερμοκρασία, για παρατεταμένα χρονικά διαστήματα, αυξάνει την ενεργειακή κατανάλωση στο σώμα, με τελικό αποτέλεσμα την απώλεια βάρους.

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