Warning over the health risks of drinking warm bottled water

You could be exposing yourself to toxic chemicals, she warned.

By Fiona Callingham, Health Reporter specialising in medical studies, symptoms of diseases and conditions, real life stories and the latest public health issues.

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It is important to stay well hydrated, especially in the summer months. Not drinking enough water can cause headaches, dizziness and confusion among other unwanted side effects.

Therefore, it is key that you regularly drink water throughout the day.

When you’re thirsty and in a rush it might be tempting to just grab the first bottle of water you find.

But an expert has warned of the health risks of drinking warm bottled water, especially if it has been sitting somewhere very hot like inside a car.

This is because chemicals from the plastic could leach into the water.

Woman drinking water

An expert issued a warning about drinking warm bottled water (Image: Getty Images)

Sarah Lawson, a food safety expert from Storage Box Shop, explained: “Do not drink bottled water that has been left in the sun or a hot environment, like a car.

The heat can cause harmful chemicals to leach from the plastic into the water.”

According to Sarah, when bottled water heats up, chemicals from the plastic can get into the water.

These chemicals, like BPA and phthalates, can be harmful if you drink them.

Drinking water with these chemicals can make you feel unwell and cause health problems.

Man drinking water at construction site

Chemicals from the plastic bottle could leach into the water, she warned (Image: Getty)

She warned of the following side effects from drinking this water:

  • Stomach issues: You could feel nauseous or get a stomach ache
  • Headaches: These chemicals can give you a headache
  • Dizziness: Feeling lightheaded or dizzy is another symptom
  • Hormone problems: Some chemicals can mess with your hormones, causing more serious health issues over time.

To avoid this happening she recommended always storing your bottled water in a cool place and avoid leaving it in direct sunlight.

You could also keep your bottled water in a cooler with ice packs.

Before you drink bottled water, check if it feels warm. If it does, it’s better to get a fresh bottle.

Sarah added: “Staying hydrated is important, but drinking water that has been left in the heat is not safe. Always keep your bottled water cool to protect your health.”

In one study, published in Environmental Pollution journal in 2014, researchers exposed plastic water bottles to four weeks of intense heat at 70C.

As a result of this they found that some antimony and bisphenol A (BPA) had leached into the water.

However, in the 16 water brands studied, only one exceeded US Environmental Protection Agency limits for BPA levels.

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