For the Love of Food

by | Oct 17, 2014
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week how to preserve your aging brain, vegetables are the new bacon, and how to stay motivated to achieve your goals.

Too busy to read them all? Try this awesome free speed reading app I just discovered to read at 300+ wpm. So neat!

Want to see all my favorite links? (There’s lots more). Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (Yes, I took that picture of the pepper heart myself.)

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For the Love of Food

by | Sep 26, 2014
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week sitting less reverses aging, the evil cousin of procrastination, and shocking new data about sugar and dental health.

Too busy to read them all? Try this awesome free speed reading app I just discovered to read at 300 wpm. So neat! It’s been only one week and I’m already up to 400 wpm.

Want to see all my favorite links? (There’s lots more). Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (Yes, I took that picture of the pepper heart myself.)
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For the Love of Food

by | Apr 18, 2014
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week exercise reverses aging, perfection is for losers, and a new way for food companies to manipulate you.

Want to see all my favorite links? (There’s lots more). Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (And yes, I took that pepper heart pic myself).
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Top 16 TED Talks for Foodists

by | Mar 19, 2014

JO_ted

This week the amazing TED conference is going on in Vancouver. For those of you who have never heard of a TED talk until today, you’re welcome.

TED collects the most interesting people in the world and gives them the stage for 20 minutes. Inevitably they will expand your mind in some way or another, even in topics you didn’t think you were interested in.

To commemorate the awesomeness which is TED, I compiled a list of my favorite TED talks to educate and inspire foodists. These talks focus on food, health, habits, happiness and quality of life. I’d love to hear which are your favorites and what you enjoy most about them.

Stay thirsty, my foodists.
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For the Love of Food

by | Jan 24, 2014
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week wheat is let off the hook, you’re still not eating enough egg yolks, and happiness slows aging.

Want to see all my favorite links? (There’s lots more). Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (And yes, I took that pepper heart pic myself).

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For the Love of Food

by | Sep 6, 2013
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week video games reverse age-related cognitive decline, “natural” foods aren’t so natural, and fruit juice takes another hit.

Want to see all my favorite links? (There’s lots more). Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (And yes, I took that pepper heart pic myself).

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For The Love Of Food

by | Jan 11, 2013

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

This week the importance of small amounts of exercise, new problems with fructose and why you shouldn’t eat at the wrong time of day.

Want to see all my favorite links? Be sure to follow me on on Delicious. I also share links on Twitter @summertomato,  Google+ and the Summer Tomato Facebook page. I’m very active on all these sites and would love to connect with you. (And yes, I took that pepper heart pic myself).

Links of the week

What inspired you this week?

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For The Love Of Food

by | May 6, 2011

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

Great information this week around the web, and I didn’t even need to call BS! Read about why being a foodie isn’t elitist, what scientists think about US agriculture policy, and what’s the big deal about dietary fat.

Want to see all my favorite links? Be sure to follow me on on Digg. I also share links at Twitter (@summertomato) and the Summer Tomato Facebook fan page. I’m very active on all these sites and would love to connect with you.

Links of the week

What inspired you this week?

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Can You Live Longer By Cutting Calories?

by | Mar 30, 2011

Photo by Werwin15

Photo by Werwin15

The science of aging is among the most dynamic and provocative in modern biology. Over the past two decades we have seen a virtual explosion in research investigating the molecular and behavioral systems that control the aging process. But the more researchers uncover about the science of aging, the more questions emerge.

Dietary restriction has long been considered the most potent regulator of aging. Restricting food intake by any means induces a series of metabolic changes in organisms from yeast to primates that serve to extend life. Studies are currently underway to investigate the ability of dietary restriction to extend life in humans.

Several biological changes are known to occur upon the onset of dietary restriction including a decline in reproductive ability, increased stress resistance and a slowdown of some metabolic processes.

Insulin signaling was among the first molecular pathways to be identified in the regulation of aging, and offered a direct tie between diet and the aging process.  In 1998 UCSF scientist Cynthia Kenyon showed that removing an insulin receptor gene (daf-2) in worms could double their lifespan. Her lab later showed that removing another insulin signaling gene (daf-16) could extend life even longer. I spoke to Kenyon about the relationship between diet and aging for this article.

Blocking insulin signaling in these worms did not just prevent the worms from dying and allow them to age longer. Instead the aging process actually slows so that older worms continue to behave like young worms. Also, as these experiments were repeated in different animals, it was shown that lowering insulin signaling also helps protect animals from stress and diseases such as cancer and heart disease.

Insulin is released as a direct response to glucose in the blood. This means that any time you eat a meal with carbohydrates, you are increasing your insulin signaling and likely accelerating aging. But this does not mean that you will live forever if you stop eating carbohydrates.

Interestingly, protein metabolism also contributes to accelerated aging, but through a different mechanism. Even more intriguing is that restricting protein increases lifespan to a greater extent than restricting sugar.

So is it simply calories that promote aging?

Probably not. For one thing, the effect of a calorie from protein is greater than a calorie from carbohydrate, making it unlikely that a calorie is the basic unit of impact. Second, there is evidence that calories are not required to accelerate aging.

Recent studies have shown that the mere act of smelling food can reduce lifespan. The mechanism for this effect is still unknown, but seems to be tied to respiration.

According to Kenyon it is clear that “sensory perception influences lifespan,” at least in worms and flies.

Thus it is likely that aging is controlled by the interaction of several pathways, including metabolism, respiration and stress. Importantly, however, lifespan seems to be dependent on a handful of specific pathways rather than global changes in cellular function or breakdown. The idea that aging is an inevitable function of time must be put aside given the evidence that it is controlled at a genetic and environmental level.

This makes sense when you think about it. Different organisms exhibit vastly different lifespans and rates of aging that are too great to be explained by some kind of universal cellular breakdown. A more parsimonious hypothesis is that organisms differ in specific genetic factors that, combined with environmental influences, regulate lifespan.

So how should we mortal humans react to these findings?

The genes linking diet and aging are highly conserved through evolution, indicating that there is a great chance human aging is sensitive to diet. Indeed, insulin-related genes have been found to be important in long-lived human populations. This suggests that the pathways discovered in worms and other organisms have similar functions in humans.

What is not clear is how much influence diet has on lifespan and to what extent we are able to manipulate it. It is already known that abnormal insulin activity in humans is linked to higher disease rates, especially “diseases of civilization” such as heart disease, hypertension, type 2 diabetes and cancer. And these diseases are clearly associated with diets rich in processed foods, especially refined carbohydrates.

The effect of protein consumption on lifespan in humans has yet to be investigated. Envisioning an experiment that would test the influence of smelling food on human aging is difficult to even imagine.

Although direct evidence is not available, there is good reason to suspect that a diet with low glycemic load may extend human lifespan. In November 2009, Kenyon’s lab reported that adding glucose to a worm’s normal diet shortens lifespan, but has no effect on the long-lived worms that lack insulin signaling genes daf-2 and daf-16. This discovery prompted Kenyon herself to adopt a low-carbohydrate diet.

Despite this there is still not sufficient evidence to recommend a calorie restricted diet for humans to extend life, largely because optimal nutrition levels for a given individual are unknown. However, most people would benefit vastly by eliminating processed foods and refined carbohydrates from their diets as much as possible.

Focusing on fresh, whole foods, enjoying an occasional glass of wine, avoiding smoking and getting regular exercise can add 14 years to the life of an average person. Maintain a healthy weight as well and your outlook gets even better.

Would you change your diet to be healthier and live longer?

Originally published February 3, 2010.

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For The Love of Food

by | Jan 29, 2010
For The Love of Food

For The Love of Food

Welcome to Friday’s For The Love of Food, Summer Tomato’s weekly link roundup.

For some reason the New York Times was brimming with great food and health articles this week. I particularly like the expose of meaningless food labels and the article on the wonders of the pressure cooker. And if you feel like giggling, find out why Stephen Colbert thinks being skinny is un-American.

I read many more wonderful articles than I post here each week. If you’d like to see more or just don’t want to wait until Friday, be sure to follow me on Twitter (@summertomato) or the Summer Tomato Facebook fan page. For complete reading lists join me on the social bookmarking sites StumbleUpon and Delicious. I’m very active on all these sites and would love to connect with you there. (Note: If you want a follow back on Twitter introduce yourself with an @ message).

For The Love of Food


The Colbert Report Mon – Thurs 11:30pm / 10:30c
The Word – Manifest Density
www.colbertnation.com
Colbert Report Full Episodes Political Humor Economy

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