What are the effects of weight loss on natural killer cell function, our first line of immune defense against cancer, as well as kidney function and fatty liver disease?

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If you missed the previous videos in my series on the ABCs of obesity, see:
• The Best Knee Replacement Alternative for Osteoarthritis Treatment (http://nutritionfacts.org/video/the-best-knee-replacement-alternative-for-osteoarthritis-treatment)
• The Effects of Obesity on Back Pain, Blood Pressure, Cancer, and Diabetes (http://nutritionfacts.org/video/the-effects-of-obesity-on-back-pain-blood-pressure-cancer-and-diabetes)
• The Effects of Obesity on Dementia, Brain Function, and Fertility (http://nutritionfacts.org/video/the-effects-of-obesity-on-dementia-brain-function-and-fertility)
• The Effects of Obesity on Gallstones, Acid Reflux, and Cardiovascular Disease (http://nutritionfacts.org/video/the-effects-of-obesity-on-gallstones-acid-reflux-and-cardiovascular-disease)

I continue the topic of obesity and weight with these videos:
• Is the Obesity Paradox Real or a Myth? (http://nutritionfacts.org/video/is-the-obesity-paradox-real-or-myth)
• What’s the Ideal BMI? (http://nutritionfacts.org/video/whats-the-ideal-bmi)
• What’s the Ideal Waist Size? (http://nutritionfacts.org/video/whats-the-ideal-waist-size)

For more on the health conditions discussed in this video, see the immune function (https://nutritionfacts.org/topics/immune-function/), kidney disease (https://nutritionfacts.org/topics/kidney-disease/), and liver health (https://nutritionfacts.org/topics/liver-health/) topic pages.

Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/video/the-effects-of-obesity-on-the-immune-system-and-kidney-and-liver-diseases and someone on the NutritionFacts.org team will try to answer it.

Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at https://nutritionfacts.org/video/the-effects-of-obesity-on-the-immune-system-and-kidney-and-liver-diseases. You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.

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Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM

Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources: https://nutritionfacts.org/translations-info/

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What is starvation and malnutrition?

Starvation, malnutrition, and over-nutrition are some of the main food supply-related problems our world faces today. This is due to increasing population, unequal distribution of food, and growing of cash crops instead of food in some developing countries.

Starvation occurs when a human or another animal does not receive enough energy in their diet. Therefore, to meet metabolic needs, the body starts to use stored fats and glycogen. When these are gone, the body starts to use available protein and so our muscles are utilized. Our heart is also a muscle and thus this may seriously weaken our heart.

Malnutrition is a little different from starvation because malnutrition results from dietary imbalance. It may be due to a deficiency or an excess intake of nutrients over a period of time. Deficiency diseases also occur due to lack of vitamins and minerals.

We have discussed them in our previous videos. We now also know that a lack of dietary fibre results in constipation. Over-nutrition occurs when a person consumes more energy than he or she can use up, so he becomes fat. Such a person is said to be obese and this is one of the most common problems in developed countries.

One of the main problems in the subcontinent is the overconsumption of saturated fats and cholesterol which increases the risk of coronary heart disease. This is dangerous because it has been estimated that on average, every 500g of fatty tissue requires a kilometre long supply of blood vessels and this is an additional burden to our heart.

To summarise, dietary imbalance may be due to economic constraints, poor eating habits, and unwillingness to follow nutritional guidelines. So next time if you have a problem with your weight do visit a nutritionist and get yourself a balanced diet plan.

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