Keto Means
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Is boiled tomato healthy?

Tomatoes have long been known to be a good source of lycopene, the phytochemical which makes them red but which also has significant antioxidant properties. Now new research has shown that this antioxidant power can be boosted even more through the simple act of cooking the tomatoes.

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Tomatoes have long been known to be a good source of lycopene, the phytochemical which makes them red but which also has significant antioxidant properties. Now new research has shown that this antioxidant power can be boosted even more through the simple act of cooking the tomatoes. Researchers from Cornell University in the US said that cooking the tomatoes increase the level of phytochemicals they contain, although it also reduces the amount of vitamin C found in the vegetable. Writing in the latest issue of the Journal of Agriculture and Food Chemistry​ Rui Hai Liu, Cornell assistant professor of food science, said: "This research demonstrates that heat processing actually enhanced the nutritional value of tomatoes by increasing the lycopene content that can be absorbed by the body, as well as the total antioxidant activity. The research dispels the popular notion that processed fruits and vegetables have lower nutritional value than fresh produce."​ Tomato samples were heated to 88 degrees Celsius for two minutes, 15 minutes and 30 minutes. Consistent with previous studies, vitamin C content decreased by 10, 15 and 29 per cent respectively when compared to raw, uncooked tomatoes. However, the research revealed that the beneficial trans-lycopene content of the cooked tomatoes increased by 54, 171 and 164 per cent respectively. Levels of cis -lycopene (which the body easily absorbs) rose by 6, 17 and 35 per cent respectively. Antioxidant levels in the heated tomatoes increased by 28, 34 and 62 per cent, respectively. While the antioxidant activity in tomatoes is enhanced during the cooking process, vitamin C loss occurs when the food's ascorbic acid is oxidised to dehydroascorbic acid and other forms of nutritionally inactive components. Lycopene is the most-efficient single oxygen quencher, and devours more than 10 times more oxygenated free radicals than vitamin E, Cornell researchers said. "This makes lycopene's presence in the diet important,"​ said Liu. "While these findings go against the notion that processed fruits and vegetables have lower nutritional value, this may create a new image for processed fruits and vegetables. Ultimately, this could increase consumers' intake of fruits and vegetables and could possibly reduce a person's risk of chronic disease."​ A timely piece of research, given the recent decision​ by the British Dietetic Association to endorse canned foods from Heinz as contributing towards the healthy eating target of five fruits of vegetables a day.

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Why you shouldn't eat tomatoes at night?

Like the delicious aged cheese on our list, tomatoes have loads of tyramine. The compound can induce the production of norepinephrine — a neurotransmitter that can stimulate brain activity. Want your mind to be racing while you're trying to drift to sleep? Eat some tomatoes.

The INSIDER Summary:

Some foods are a bad idea to eat before bed — and not because of the calories.

Certain foods can cause sleepless nights and digestive issues.

Even healthy foods like tomatoes and watermelons should be avoided before sleeping.

Tossing, turning, wondering why you can’t seem to drift off to bed… Was it something you ate? Maybe. It’s not as ridiculous a notion as it sounds. Some foods are a really bad idea to eat before bed — and not because of the calories. Studies have disproven the idea that eating late at night results in poorer health outcomes than eating earlier in the day. So the dietary concern isn’t the problem; a few of the foods on this list are low-calorie and actually really healthy. Worrying about more than just your waistline, we compiled foods that have other qualities that make them set-ups for sleepless nights. A few of them might even cause you to wake up multiple times throughout the night, infuriatingly snapping you back awake. You need your rest, especially because of sleep’s crucial role in maintaining your natural energy cycle, keeping your cravings regular, and jacking up your metabolism. Find out which foods you should avoid if you ever want to fall asleep once your head hits the pillow.

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