You've probably asked yourself too if that old bottle of water in your pantry is still good to drink? Water is life, yet there are remaining questions about the shelf life. Whether you are stockpiling for emergencies or wondering if that bottled water left in a heated car is safe to drink, understanding if and how water "expires" is essential. This article goes into the science behind water storage and its potential risks and practical tips to ensure your water will remain safe and consumable.

Water itself does not spoil or degrade. Chemically, pure water (H₂O) remains unchanged indefinitely. However, there are issues that arise due to the containers in which it is stored and the environmental conditions surrounding the storage.

In the United States, most bottled water has an expiration date. This labeling is often misunderstood as being an indication of the water's safety, but it mainly has to do with quality. The U.S. Food and Drug Administration (FDA) confirms that commercially sealed bottled water is safe to drink indefinitely if stored properly. Over time, though, the taste, smell, and even the appearance of water may change due to interactions with its packaging.

Role of Packaging in Water Safety

Plastic Bottles and Chemical Leaching

Bottled water is mostly packed in polyethylene terephthalate, PET plastic. Even though it is light in weight, resistant, and recyclable, this material is limited in other aspects. It leaches chemicals in trace amounts in the water if heated or placed under direct sunlight. For instance, do not leave your bottled water in the hot car for an extended period.

The next is bisphenol A or BPA. This chemical has been used to soften some plastics and is known for its hormone disruption. Many producers have shifted toward BPA-free materials, but older bottles and improper storage still pose risks. Bottles carrying recycling code #7 may be BPA-contaminated. There are also concerns over microplastics and long-term storage.

Microplastics and Long-Term Storage

Over time, the plastic in the bottle may leach into the water, causing some to question health risks. In 2019, one article published in the International Journal of Environmental Research and Public Health noted that these particles exist but are usually not at high enough concentrations to pose a problem if the water is properly stored.

Also Read: What Happens When You Drink Too Much Water?

How Long Can Water Be Stored Safely?

Bottled Water

Unopened bottled water, kept in a cool, dark place, remains safe to drink for years. But manufacturers often advise that it should be consumed within two years of its manufacture date for best quality. After this period, it may start showing off-flavors or odors due to contact with the plastic.

Tap Water

Tap water, under the Environmental Protection Agency (EPA), undergoes strict standards for safety. It can be kept in pure, BPA-free bottles up to six months. Afterward, it loses its fresh flavor or becomes dirty if not properly sealed.

Rainwater

Don't drink rainwater unless treated first. It usually contains contaminants that should not reach the human stomach. It should be used to water plants if not filtered and sterilized first.

Signs That Water Has Gone Bad

Water itself doesn't go bad, but extrinsic factors make it unsafe. Always discard water that has:

An off smell: An earthy, metallic smell indicates contamination.

Coloration: Greenish or bluish coloration signifies microbial growth or rust.

Unpleasant taste: A metallic or stale taste is a hallmark of degradation.

Froth or particles: Indicate dirt, germs, or other impurities.

How to Store Water Safely?

Avoid Heat and Sunlight

Store water in a cool, dark place and out of direct sunlight. Heat breaks down the plastic, allowing chemicals to leach out more easily.

Choose the Right Containers

For long-term storage, select BPA-free or food-grade plastic containers. The best alternatives are stainless steel and glass containers, which avoid all the risks that plastic poses.

Hygiene Maintained

Wash and sanitize the container before refilling. Always seal the lids so that no bacteria get inside.

Rotate Your Stock

Use a first-in, first-out rotation system with stockpiled water. This will mean that you will use the oldest water first to keep your water supply fresh.

Is It Safe to Drink Water Past Its Expiration Date?

The expiration date on bottled water is a mark of its quality, not safety. Although the water is safe to drink past this date, it is sensible to check it for any signs of spoilage as mentioned above. Tap water that has been stored for longer periods should be checked for clarity and odor before consumption.

Plastic bottles, although convenient, degrade the environment. Only a few percent of PET bottles are recycled, while the rest remain in landfills or oceans. Choose reusable containers and tap water whenever possible to minimize plastic waste and environmental damage.

Water is one of the most precious resources in this world, yet it can be safe only if it is kept appropriately. People may tell you that water does not expire, but the fact is that packaging materials, exposure to the environment, and storage conditions may affect the quality of the water. Proper storage techniques, opting for BPA-free containers, ensure that water remains fresh, safe, and ready for consumption at any time.

Watermelon is a popular summer fruit known for its high water content, making it excellent for hydration. It also contains vitamins A and C, and antioxidants like lycopene. While watermelon is a hydrating and nutritious fruit often recommended for summer, eating too much of it can have specific impacts on women with Polycystic Ovarian Disease (PCOD), particularly due to its sugar content and potential for digestive issues.

Does watermelon help women dealing with PCOD?

Dr S K Wangnoo, Senior Consultant, Endocrinology, Indraprastha Apollo Hospital, Delhi, while discussing the effects of watermelon consumption on women with PCOD, said that overconsumption of the fruit may lead to blood sugar spikes, which can worsen insulin resistance—a common characteristic of PCOD—and trigger symptoms such as weight gain and fatigue. The expert further explained why this happens.

1. Blood sugar spikes: Despite being considered a low-GI fruit, consuming large quantities of watermelon can lead to significant increases in blood sugar levels, which is a concern for women with PCOD who often struggle with insulin resistance.
2. Worsened insulin resistance: Frequent blood sugar spikes from overeating high-sugar foods, including fruits like watermelon, can exacerbate insulin resistance, making PCOD symptoms more difficult to manage.
3. Digestive issues: Excessive watermelon intake can cause bloating, gas, and diarrhoea due to its high water and fibre content, especially if consumed in very large amounts.
4. Weight management challenge: Increased sugar intake, even from fruit, can contribute to a calorie surplus if not balanced, potentially hindering weight management efforts crucial for PCOD.
5. Considered PCOD-friendly in moderation: Watermelon is generally listed among fruits suitable for a PCOD diet due to its relatively low glycaemic index compared to some other fruits, but the key is moderation.

Why do women with PCOD need balanced nutrition?

Viveka Kaul, Chief Diabetes Educator & Nutritionist, Endocrinology Department, Apollo Hospitals, said, “Balanced nutrition plays a critical role in managing PCOD, particularly in regulating insulin response and reducing chronic inflammation, both of which are key drivers of the condition. What women eat throughout the day has a direct impact on blood sugar levels, which in turn influences hormonal balance and symptom severity.”

The ideal dietary routine for women with PCOD

Foods that are high in fibre and protein help slow down glucose absorption, preventing sudden spikes in blood sugar that can trigger excess insulin release. Over time, repeated insulin spikes can worsen androgen production, leading to symptoms such as acne, irregular periods, and weight gain. Including healthy fats in the diet further improves insulin sensitivity and supports overall metabolic stability.

Viveka Kaul went on to say that frequent consumption of refined carbohydrates and sugary foods can keep insulin levels consistently elevated, making it harder to manage PCOD effectively. The focus should shift from restriction to balance and consistency. Pairing carbohydrates with protein or healthy fats, maintaining regular meal timings, and avoiding long gaps followed by heavy meals can help keep energy levels stable and prevent metabolic stress. Over time, these steady dietary habits can lead to meaningful improvements in both hormonal health and symptom control.

Key dietary practices for PCOD management

1. The expert listed some simple dietary suggestions to help women living with PCOD:
2. Balance carbohydrates with protein or fats: helps slow sugar absorption
3. Eat at regular intervals: prevents blood sugar fluctuations
4. Choose high-fibre foods: improves insulin response
5. Include healthy fats: supports hormone balance
6. Avoid refined sugars: reduces insulin spikes
7. Limit processed foods: helps lower inflammation
8. Focus on whole foods: improves overall metabolic health
9. Control portion sizes: prevents excess calorie intake
10. Stay consistent with meals: supports hormonal stability
11. Hydrate adequately: aids metabolism and overall function

Ultimately, managing PCOD through diet is about building sustainable, everyday habits rather than following short-term fixes. Consistency in food choices, portion control, and meal timing can gradually improve insulin sensitivity and hormonal balance. When combined with regular physical activity and adequate sleep, these dietary practices can significantly reduce symptom severity and support long-term reproductive and metabolic health.

Indian food is loved across the world—and this cuisine is not just popular for its curries but also for its street food. From gol gappas to samosas to the Indian version of Chinese food, there is so much that the streets offer, and at low prices as well. Yet, the one concern that prevails in the case of street food is cleanliness. Hygiene is rarely maintained when it comes to street food, and during summer, when food can spoil within hours, street food becomes riskier to eat. That being said, an expert has shared insights on the risks of eating street food in summer.

What are the risks involved with eating street food in summer?

Dr Saswata Chatterjee, Gastroenterologist—CK Birla Hospitals, CMRI, in an interview with Health and Me, shared insights on the health risks of eating street food in summer. The expert said that your cravings could lead to food poisoning and even gastroenteritis.

"Food poisoning and acute gastroenteritis (also referred to as 'gastro') have both risen dramatically during the summer months. Many of these illnesses result from poor street food hygiene practices. The hot weather allows for the rapid multiplication of bacteria such as E. coli, Salmonella, and Staphylococcus when they are present in food that has been inadequately protected from contamination and/or hygienically prepared (i.e. raw vs. cooked)," Dr Chatterjee explained.

Why does street food spoil fast?

On the one hand, street food is prepared fresh for immediate consumption. However, sometimes a day's leftovers are carried forward to the next day. Due to extreme heat and inadequate equipment for refrigeration, your favourite street foods are likely to spoil faster than they usually do.

Street food is popular with the public but generally lacks adequate temperature control and sanitary conditions. For example, cut fruit, chutneys, dairy products, and used cooking oil that has been reheated and recycled carry a much higher risk during the heat of summer. In addition, the water used in ice, making pani puris, or any beverage can be a significant source of contamination.

What are the symptoms of gastroenteritis?

Patients usually present with symptoms including, but not limited to, vomiting, diarrhoea, abdominal cramps, fever, and dehydration. Although most patients recover quickly from mild gastroenteritis, in some individuals — especially children, older adults, and those with impaired immunity — complications may lead to severe dehydration or even death.

Staying safe this summer

To prevent illness, raising consumer awareness and providing education are critical. In most cases, it is preferable to eat food that has been prepared in a hygienic manner. Hot, freshly cooked foods are better than cold foods or food that has been left out for long periods of time. It is also wise to avoid eating raw or pre-cut foods from open markets.

If you are craving street food, try making it at home in a more hygienic and controlled manner. Use cleaner and healthier ingredients and enjoy right away. Avoid storing these foods, and if you do, try healthier practices such as refrigeration at a safe temperature in a dry environment.

Every morning across India, fresh fruit finds its way onto the table — mangoes in summer, bananas year-round, grapes, guavas, and more. It remains one of the simplest and most powerful habits for good health. But emerging research is prompting a more nuanced question: not whether we should eat fruit, but how that fruit is grown. Dr Arjun Shah, Consultant Neurologist/Neurophysician, Saifee Hospital, spoke about the risks involved with eating unwashed fruits.

Understanding the Concern: Pesticides and Brain Health

Parkinson's disease is a progressive neurological condition in which dopamine-producing nerve cells in the brain gradually degenerate. This leads to symptoms such as tremors, stiffness, and slowed movement. In India, an estimated 5.8 lakh people are living with the condition, a number expected to rise as the population ages. The causes of Parkinson’s are complex and multifactorial. Genetics, age, and environmental exposures all play a role. Among these, long-term exposure to certain pesticides has drawn increasing scientific attention.

The Chemicals in Question

A number of pesticides have been linked, with varying levels of evidence, to neurological damage and increased Parkinson’s risk in human and animal studies:

1. Paraquat – Strong evidence; still legal in India
2. Chlorpyrifos—Moderate evidence of neurological harm; banned in the EU and US, but used in India
3. Mancozeb / Maneb – Moderate evidence, especially in combination; widely used on fruits like grapes and apples
4. Endosulfan—Strong evidence; banned in India (2011), but residues persist in soil and food chains
5. DDT – Moderate evidence; still used in malaria control programmes
6. Rotenone – Strong evidence in animal models; limited use in India

The concern is not a single meal or occasional exposure. The real issue lies in low-dose, repeated exposure over years, which may quietly accumulate risk. Parkinson’s disease is not caused by one factor alone. Pesticide exposure is just one piece of a much larger puzzle. However, reducing unnecessary exposure is a sensible and low-risk step towards long-term health.

Which Fruits Carry More Residues?

Residue levels often depend on farming practices, but certain patterns are consistently observed. Higher Residue Load (typically thin-skinned or heavily sprayed):

1. Grapes (table and wine)
2. Apples (especially imported varieties)
3. Strawberries
4. Chillies and capiscum
5. Pomegranates

Relatively Safer Choices (thick-skinned or locally grown):

1. Bananas
2. Papaya
3. Amla (Indian gooseberry)
4. Jamun
5. Guava (local and seasonal)

Practical Steps to Reduce Exposure

For most families, the goal is not perfection but simple, consistent habits that lower risk:

1. Wash thoroughly under running water for 30–60 seconds — more than just a quick rinse.
2. Soak before eating in salt water or diluted vinegar for 10–15 minutes.
3. Peel where possible, especially fruits like apples where residues concentrate on the skin.
4. Choose local and seasonal produce, which is less likely to have undergone heavy post-harvest treatment.
5. Opt for organic selectively, especially for high-residue produce like grapes and apples.

The Balanced Perspective

It is important not to lose sight of the bigger picture. Avoiding fruit altogether would do far more harm than good. Fruits are rich in antioxidants and anti-inflammatory compounds that actively support brain health. In fact, locally available options like amla, jamun, and guava are among the most nutrient-dense, neuroprotective foods — affordable, accessible, and deeply rooted in Indian diets. There is no single cause — and no single prevention — for Parkinson’s. But small, informed choices made every day can add up over a lifetime.