“Hey, Rupam, open the door. Take this fish,” a girl called from outside. I used to be sitting within the kitchen of my friend Rupam's house in rural northeast India. It was the center of the monsoon season and it had been raining since morning. The woman will need to have been screaming since the sound of the rain on the tin roof drowned out every little thing else.

The aunt round the corner was standing outside with a big bowl Boriala fishHer husband was fishing on the Subansiri Riverthat flows beside the village, and he had been fishing all evening. “My husband cannot stay indoors in this weather,” she said in Assamese, the local language. “One can catch a lot of fish at this time of the year.”

The Monsoon season has long provided people downstream with an abundance of fish from May to September.

However, that is prone to change as soon because the Subansiri subsea power plantone in all India's largest hydroelectric power plants, is accomplished upstream. fully operational in 2026the dam will change the natural flow of the river.

For many of the day, the dam will hold back water and only allow a small amount to go through, roughly corresponding to the region's dry season. But every night, it would release water for about 4 hours to generate electricity, and the raging river will then rush downstream almost because it does through the monsoon season.

The dam is not going to only hinder the movement of fish, but may even change the way in which people downstream experience the river's flow.

In a 2010 Report on the likely impacts of the Subansiri Lower Hydroelectric Project on the downstream population, experts from three leading institutes of Assam – the central state in northeast India – have identified several problems for the downstream communities, including risk of flooding and erosion, risk of earthquakes, lack of water flow for fisheries and groundwater recharge, and survival of species equivalent to river dolphins.

Now, a decade later, Dam is nearing completionThe key query stays: What will occur to people like Rupam’s neighbors, whose lives and livelihoods rely upon the river?

In 2023, I lived in a village on the Subansiri River. My Dissertation research took me there to research the impact of this dam, under construction since 2005, on the communities downstream.

“Little displacement” on account of “benign” dams

Northeast India has been the main target of hydroelectric power plant construction for the reason that starting of this century. To secure the country’s energy future, Central Electricity Board of India In 2001, the Brahmaputra basin was found to have the biggest hydropower potential – 63,328 megawatts. It was proposed to construct a whopping 168 dams within the region.

This earned the region the nickname “India’s future powerhouse“The Subansiri Lower Hydroelectric Project was the primary project.

The government sees the mega hydropower initiative as a win-win situation. It expects the dams to extend India's energy security while developing major infrastructure networks in one in all India's disputed border regions.

About 80% of the electricity for “India’s future power plant” is to be generated in Arunachal Pradesh, the biggest state in northeast India. China has India’s Sovereignty over Arunachal for the reason that country's independence in 1947.

The construction of dams in Arunachal Pradesh has one other advantage: the very low population density. There are about 17 people per square kilometer and over 80% of Arunachal’s total area is forestThis helped the Indian government to argue that “it is comparativelysmall displacement“from flooding compared to other parts of the country and therefore these projects are harmless.”

However, these projects are in definitely not benign for the people living downstream.

The impact on life downstream

The floodplains of the Subansiri are home to people belonging to indigenous communities and the lower castes of the Hindu caste hierarchy. Mising – the biggest indigenous community within the downstream region – call the river “Awanori”, which implies “mother river”.

As a part of my long-term ethnographic fieldwork, I observed how plenty of Livelihood within the lower reaches – fishing, farming, livestock rearing, salvaging driftwood and transporting people by boat to distant areas – all rely upon the 127-kilometre-long Subansiri River. I interviewed individuals who live there and attended community events to know the necessary role the river plays in on a regular basis life.

Their dependence on the river relies on natural, uncontrolled currents. Once the dam is accomplished, the river flows will probably be National Hydropower Company.

Once operational, the dam will largely block the river for 20 hours a day after which release the water – about 2,560 cubic meters per second – to drive turbines that may meet peak electricity demand between 6 and 10 p.m. each evening. During the 20 off-peak hours, the dam would release lower than a tenth of that quantity of water.

What happens when the flow of the river changes?

When the dam was first proposed, there was no plan to release water through the 20 hours of non-peak demand. Activists argued that interrupting the flow of water would make it impossible for any aquatic animal to survive downstream.

In 2017, the off-peak flow proposal was increased to a spread of 225 to 250 cubic metres per second. That yr, the National Green Tribunal, which adjudicates civil cases related to the environment, ruled asked the National Hydroelectric Power Corporation to make sure a minimum water level for the survival of Ganges dolphinIndia's national aquatic animal. This ruling paved the way in which for construction to resume after an eight-year delay. However, the court didn’t address how the changes would affect people living downstream.

Calculating the minimum flow required for the survival of even a single aquatic mammal ignores many features through which the flow of the Subansiri is vital for humans and other animals.

The dam itself threatens the existence of many fish species downstream, including the golden mahseer. It may even change the flow and sediment supply within the river, and the abrupt and robust current for 4 hours every night will higher scrubbing performance and there’s a risk of abrasion of the river bed and banks.

Traditionally, early-ripening crops are grown within the dry riverbed and on the sandbanks from October to April. Ahu rice and mustard before the monsoon flood arrives. People also graze their cattle on the islands and within the fields after the harvest is brought in.

However, once the dam floods the river for 4 hours every night, the riverbed and sandbars will probably be largely unusable.

The rainy season, when the river is in flood, is the best time for fishing and collecting driftwood. However, the dam hinders the movement of fish and traps the wood behind the dam. So even when the river is in flood on daily basis, fishermen and wood collectors may not give you the chance to profit.

People like Rupam's neighbor know that the Subansiri River is about to alter. They could have to navigate the river more fastidiously, and each evening the water level will reflect the monsoon season.

Will they give you the chance to catch enough fish to share with their neighbors? Only time will tell.

The proverbial “sugar rush” that follows the consumption of a sweet treat is a well known example of the possibly positive effects of food on mood.

On the opposite hand, the sensation of “hangry” – the phenomenon through which Hunger manifests itself in the shape of anger or irritability – illustrates how what we eat or don’t eat may cause negative emotions.

The latest research suggests that Blood sugar fluctuations are partly responsible for the connection between what we eat and the way we feel. Through his Effects on our hormones And our nervous systemthe blood sugar level can Fuel for anxiety and depression.

Mental health is complex. There are countless social, psychological and biological aspects that ultimately determine an individual’s experience. However, quite a few randomized controlled trials have shown that food plan is a biological factor that can significantly influence the danger for symptoms of depression and anxiety, especially in women.

As Resident basically medicine with a Ph.D. in nutritionI actually have witnessed that Antidepressants work for some patients but not others. Therefore, for my part, treatment strategies for mental illness should goal all risk aspects, including food plan.

The role of the glycemic index

Many of the randomized controlled trials which have demonstrated the link between food plan and mental health have the Mediterranean food plan tested or a rather modified version of it. The Mediterranean food plan is usually characterised by a number of vegetables – especially dark green leafy vegetables –, fruits, olive oil, whole grains, legumes and nuts, and small amounts of fish, meat and dairy products. One of the numerous features of the Mediterranean food plan that could be chargeable for its effect on mood is its low glycemic index.

The The glycemic index is a system that rates foods and diets in keeping with their potential to extend blood sugar. In line with the commentary that blood sugar fluctuations affect mood, high glycemic index diets that cause drastic blood sugar spikes have been related to increased risk of depression and to some extent fear.

Carbohydrates with high glycemic index These include white rice, white bread, crackers and baked goods. Therefore, a food plan high in these foods may increase the danger of depression and anxiety. In contrast, carbohydrates with a low glycemic index, equivalent to parboiled rice and al dente pasta, that are absorbed more slowly and cause a smaller rise in blood sugar, are related to a lower risk.

How food plan affects mood

Many scientific mechanisms have been proposed to clarify the link between food plan and mental health. One plausible explanation that links blood sugar fluctuations to mood is their effect on our hormones.

Every time we eat sugar or carbohydrates equivalent to bread, rice, pasta, potatoes and crackers, the resulting rise in blood sugar levels triggers a cascade of hormones and signaling molecules. For example, dopamine – our brain’s happiness signal – is the explanation why we are able to experience a “sugar rush” after eating desserts or baked goods. Dopamine is the The way the body rewards us to acquire the calories or energy mandatory for survival.

Insulin is one other hormone that’s triggered by carbohydrates and sugar. Insulin's job is to lower blood sugar levels by moving the sugar we eat into our cells and tissues in order that it may well be used for energy. However, after we eat an excessive amount of sugar, too many carbohydrates, or carbohydrates with a high glycemic index, blood sugar levels rise quickly. results in a drastic increase in insulin levelsThis may cause blood sugar levels to fall below baseline.

This drop in blood sugar levels triggers the discharge of adrenaline And his cousin noradrenalineBoth hormones send glucose into the bloodstream to bring blood sugar levels back to the suitable level.

However, adrenaline doesn’t only affect blood sugar levels. It also affects how we feel and its release can manifest as anxiety, fear or aggressionTherefore, food plan influences mood through its effect on blood sugar levels, which in turn trigger the hormones that determine how we feel.

Interestingly, the adrenaline rush that follows Sugar and carbohydrate consumption only occurs 4 To five hours after eatingSo after we eat sugar and carbohydrates, dopamine makes us feel good within the short term, but in the long run, adrenaline could make us feel bad.

However, not all persons are affected equally. Identical meals can very different blood sugar reactions in several people, depending on gender, and genetics, Lack of exercise And the intestinal microbiome.

And it's necessary to do not forget that, as mentioned earlier, mental health is complicated, so in certain circumstances no amount of dietary optimization can overcome the social and psychological aspects which will underlie the experience.

However, poor nutrition can worsen an individual’s mental health and is due to this fact relevant for everybody, especially women who wish to optimise their mental health. Research has shown that ladies particularly more sensitive to the consequences of the glycemic index And Nutrition overall.

Unfortunately, easy solutions equivalent to replacing sugar with artificial sweeteners are usually not an option. Studies have shown that amongst all processed foods artificial sweeteners and artificially sweetened beverages are most strongly related to depression.

Mood optimization through food

The most blatant approach to stabilize blood sugar levels is Reduce your intake of sugar and carbohydratesBut that's not the one option. Research has shown that straightforward changes can dramatically mitigate the wild swings in blood sugar levels. Some strategies to stabilize blood sugar levels and optimize mood include:

• Make low glycemic index carbohydrates like parboiled rice, whole wheat bread and al dente cooked pasta your staple foods and be mindful of what number of high glycemic index carbohydrates you eat. I give my patients this guide to boost their awareness of the glycemic index of various carbohydrates.

• Eat carbohydrates earlier within the day, for instance at breakfast or lunch, relatively than later within the day, for instance at dinner or, even worse, as a night snack. Our hormones follow a circadian rhythm, and carbohydrates which might be eaten, earlier within the day result in a smaller increase in blood sugar in comparison with carbohydrates eaten later within the day.

• Avoid eating carbohydrates alone, equivalent to snacking on a packet of crackers or munching on a bowl of rice. Always attempt to mix carbohydrates with proteins equivalent to beans, nuts, meat and fish, or with healthy fats equivalent to olive oil and avocado. Combination of nutrients slows down the digestion of carbohydrates and thus ensures a lower increase in blood sugar.

• Eat carbohydrates at the tip of the meal, after eating vegetables and protein first. Simply changing the order through which foods are eaten can Blood sugar rise that follows.

• Eat a salad dressed with olive oil and vinegar before eating carbohydrates. The combination of vegetables, Acid from the vinegar and the fat from the olive oil together decelerate the absorption of carbohydrates and minimize the resulting increase in blood sugar.

This summer has shown how quickly high temperatures can result in serious health risks. record-breaking heatwaves and claimed hundreds of lives worldwide.

However, it shouldn’t be only high and low temperatures which are vital. How many degrees the temperature fluctuates inside a day – the each day temperature fluctuations – itself poses health risks.

Studies have shown that days with greater than normal temperature fluctuations result in a rise in Asthma attacks and hospital stays for Respiratory tract And Cardiovascular diseaseswhich ends up in a overall higher mortality rate than normal. A study based on data from 308 cities from 1972 to 2013 estimates that 2.5% of deaths during this time may very well be attributed to large each day temperature fluctuations.

Although humans can live in a wide selection of temperatures, a drastic change in temperature can stress several systems within the body, including the immune, Musculoskeletal system And Cardiovascular systemIt may be particularly Taxation of very young And older peoplethat are generally more at risk of harsh climates.

We mapped each day temperature fluctuations on the neighborhood level across the U.S. to get a greater picture of where these temperature fluctuations are best and who’s most affected. The results show how poverty and a legacy of discriminatory practices have led to racial minorities and low-income residents in neighborhoods facing more dramatic diurnal temperature differences.

What influences temperature fluctuations?

Large temperature fluctuations between night and day are more common in some regions, resembling the southwestern United States. However, depending on the landscape and the so-called urban heat island effect, temperatures may fluctuate over short distances.

For example, the ocean can moderate rapid temperature changes because water can absorb a variety of heat before it becomes hot. Los Angeles A typical example is Santa Monica, a coastal community in Los Angeles County, which experiences much smaller temperature fluctuations than inland areas of the county, resembling downtown Los Angeles.

Green spaces resembling wooded parks may reduce temperature fluctuations. City trees and vegetation can keep residential areas cooler, thereby reducing temperature fluctuations.

Who is exposed to the best temperature fluctuations?

Using NASA satellite data from 2000 to 2017, we compared each day temperature fluctuations with data from the US Census Bureau. American Community Survey demographic data in numerous census tracts to see how race and ethnicity, income and age influenced exposure as a result of each day temperature fluctuations in all 50 states.

We found that of the three demographic aspects, exposure to each day temperature variation was most unequal by race and ethnicity, followed by income, and age played the least role.

In essentially the most unequal state, Rhode Island, Hispanic and black populations experienced average each day temperature fluctuations of 17.3 degrees Celsius in May, while the typical each day temperature fluctuation for white populations was 14.3 degrees Celsius, a difference of three degrees Celsius between the groups.

The difference between low- and high-income groups in Rhode Island was 28.6 °F (15.9 °C) versus 24.5 °F (13.6 °C), or 4.1 °F (2.3 °C). Among age groups, the difference was negligible at 1.8 °F (1 °C).

Among the 50 states, we found significant differences by race and ethnicity in 46 states, by income in 39 states, and by age in 15 states. In general, Daily temperature fluctuations were highest within the western states, especially in late spring and summer.

The indisputable fact that minorities disproportionately live in neighborhoods with greater temperature fluctuations confirms one other dimension of inequality in vulnerability to climate change.

Temperature fluctuations increase with climate change

There can be evidence that temperature fluctuations have gotten more dramatic over time. Fifties to Nineteen EightiesRecords show that temperature fluctuations are decreasing worldwide. However, for the reason that Nineties, studies show that temperature fluctuations have increased, possibly affecting all life on earth.

Studies suggest that these temperature fluctuations expand further as greenhouse gas emissions, which largely come from the burning of fossil fuels, proceed to lift global temperatures. And with these increases will come more premature deaths. According to the IPCC's highest emissions scenario (RCP 8.5), which projects conditions in a world where ever-increasing amounts of fossil fuels are burned, future temperature fluctuations By the tip of the century, temperatures are expected to rise by as much as 1.6 °C (2.9 °F).

There are ways to scale back this risk, starting with reducing greenhouse gas emissions from vehicles, power plants, livestock farming and other sources.

Communities may take steps to scale back temperature fluctuations in low-income and minority neighborhoods by increasing tree cover and installing lightweight coatings on roofs to attract heat away from buildings. They may offer assistance programs to assist individuals who otherwise cannot afford to put in or operate cooling or heating equipment.