Skip to content

跡象表明你的飲食中沒有攝入足夠的脂肪

Why do you need fat in your diet?

Your body requires dietary fat for many biological processes. Without it, you won't be able to live a healthy life. Here are some of the important roles dietary fat plays in your body:
  • Helps you absorb vitamins. Vitamins A, D, E, and K are fat-soluble, which means your body can only absorb them if you eat them with fat. A lack of fat in the diet can lead to deficiencies in these vitamins, which can lead to a variety of health problems.
  • Support cell growth. Fat provides structure to the outer membrane of every cell in your body.
  • Supports brain and eye health. The omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) help maintain the health of the brain, central nervous system and retina. Your body doesn't make these fatty acids - you can only get them from your diet.
  • wound healing. Essential fatty acids play a key role in wound healing and blood clotting.
  • Hormone production. Your body needs dietary fat to make certain hormones, including the sex hormones testosterone and estrogen.
  • Source of energy. Each gram of fat you consume provides you with approximately 9 calories of energy. In comparison, each gram of carbohydrate or protein produces only 4 calories of energy.
Types of dietary fat

Dietary fats can be divided into four categories: trans fats, saturated fats, monounsaturated fats, and polyunsaturated fats.

Trans fat

Trans fats are primarily found in partially hydrogenated oils and are the unhealthiest type of fat for your body. Hydrogenated oils are often used to improve the taste and shelf life of processed foods.

Your body doesn't need trans fat. Eating large amounts of this fat can increase your risk of heart disease, stroke and type 2 diabetes.

Trans fats may be found in:

  • Processed foods (such as microwave popcorn, frozen pizza, and cookies)
  • Baked goods (such as store-bought pie crusts, cakes, and cookies)
  • Fried foods (such as donuts and French fries)
  • Margarine and vegetable shortening

To find out if a food contains trans fat, you can read the ingredient list on the package. If partially hydrogenated oil is listed as an ingredient, it's best to avoid using the product.

Saturated fat

Saturated fat is primarily found in animal products such as meat, eggs, and dairy. These fats tend to be solid at room temperature.

The USDA recommends getting less than 10% of your daily calories from saturated fat. Current research shows that replacing saturated fat with unsaturated fat is associated with a lower risk of heart disease.

monounsaturated fat

According to the American Heart Association, monounsaturated fats can help lower LDL ("bad") cholesterol in the blood. This can reduce your risk of heart disease and stroke.

Unlike saturated fat, monounsaturated fat is liquid at room temperature. Foods that are good sources of this type of fat include:

  • Vegetable oils (such as olive, canola, sesame, and safflower)
  • Nuts (such as almonds, peanuts, walnuts, and cashews)
  • Nut butters (such as peanut butter and almond butter)
  • avocado

polyunsaturated fat

Your body can't make polyunsaturated fats - that's why you need to get them from the foods you eat. These fats are also called "essential fats."

Omega-3 fatty acids are a special type of polyunsaturated fat that can help reduce the risk of heart disease, prevent irregular heartbeats, and help lower blood pressure.

You can find omega-3 fatty acids in the following foods:

  • Fatty fish (such as salmon, mackerel, herring, and sardines)
  • Oysters
  • flax seeds
  • chia seeds
  • Walnut

To help keep your body healthy, most of the fat you eat should be monounsaturated or polyunsaturated fat.

How to tell if you're getting enough fat in your diet

Dietary fat deficiency is rare in healthy people who eat a balanced, nutritious diet. However, certain conditions may put you at risk for fat deficiency, such as:

  • eating disorder
  • Large bowel resection (colectomy)
  • inflammatory bowel disease
  • cystic fibrosis
  • pancreatic insufficiency
  • very low fat diet

If you don't eat enough dietary fat, certain biological processes in your body may not work properly.

Let's take a closer look at some signs that you're not getting enough fat in your diet.

vitamin deficiency

Your body needs dietary fat to help absorb fat-soluble vitamins such as vitamins A, D, E, and K. Inadequate intake of these essential nutrients increases the risk of:

  • night blindness
  • Infertility
  • swollen gums
  • bruises easily
  • dry hair
  • loose teeth
  • frustrated
  • Muscle pain
  • blood clot under fingernail

Dermatitis (skin inflammation)

Studies have found that fat is an important part of the skin's cell structure and helps the skin maintain its moisture barrier. If you don't get enough dietary fat, it can affect your skin health and lead to dermatitis.

"Dermatitis" is a general term describing inflammation of the skin. Dermatitis caused by dietary fat deficiency usually appears as a dry, scaly rash.

Wounds heal slowly

According to research, your body needs fat to make many of the important molecules that control your body's inflammatory response. Low dietary fat intake may disrupt this response and lead to slower wound healing.

Deficiencies in fat-soluble vitamins such as vitamin A and vitamin D can also cause wounds to heal more slowly than they should.

hair loss

Fat molecules in the body called prostaglandins promote hair growth. Consuming too few essential fats may change your hair texture, and research suggests it may also increase your risk of scalp or eyebrow hair loss.

often sick

Severely limiting fat intake can weaken your immune system and lead to more frequent illness.

Your body needs dietary fat to produce several molecules that stimulate immune cell activity.

Essential fatty acids are also important for the growth of immune cells. To do this, your body especially needs the omega-3 fatty acid alpha-linolenic acid and the omega-6 fatty acid linoleic acid.

Tips for creating a more balanced diet

The USDA recommends getting up to 35% of calories from fat. this means:

  • On a 2,500-calorie diet, you can consume up to 97 grams of fat per day
  • On a 2,000-calorie diet, you can consume up to 66 grams of fat per day
  • About 50 grams of fat per day on a 1,500-calorie diet

But not all fats are created equal. It's best to avoid foods containing trans fats as much as possible.

It's OK to include some saturated fat (such as eggs, meat, or dairy) in your diet. But try to get most of your fats from monounsaturated and polyunsaturated sources, such as:

  • Olives and olive oil
  • Nuts and seeds
  • Fatty fish and fish oil
  • avocado

Your body requires dietary fat for many biological processes. If you don't get enough fat in your diet, you may notice symptoms such as dry rashes, hair loss, a weak immune system, and problems related to vitamin deficiencies.

To help keep your body healthy, most of the fat you eat should be monounsaturated or polyunsaturated fat. These fats are commonly found in fatty fish, nuts and seeds, olive oil, and avocados.

Review

All comments are moderated before being published

HealthyPIG Magazine

View all
澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 重點:事件本身不代表飲水會感染;主要風險來自水經鼻腔進入。 目錄 ...
如何判斷雞翅是否變壞?

如何判斷雞翅是否變壞?

重點摘要 雞翅會變質嗎? 如何判斷雞翅是否變壞? 過期雞翅還能食嗎? 雞翅可存放多久? 如何儲存雞翅? 雞翅可以冷凍嗎? 結論 雞翅會變質嗎? 會。皮脂較多、表面不潔或溫度過高時,細菌繁殖更快。 如何判斷雞翅是否變壞? 外觀:皮色發黃、出黑斑或血水。 觸感:表面黏滑、軟爛。 氣...
如何判斷雞蛋是否變壞?

如何判斷雞蛋是否變壞?

重點摘要 雞蛋會變質嗎? 如何判斷雞蛋是否變壞? 過期雞蛋還能食嗎? 雞蛋可存放多久? 如何儲存雞蛋? 雞蛋可以冷凍嗎? 結論 雞蛋會變質嗎? 會。殼面有微孔,溫差及濕度變化會令細菌入侵。 如何判斷雞蛋是否變壞? 水測:沉底=較新鮮;浮起=多半變壞。 打開觀察:蛋白渾濁水樣、蛋黃...
如何判斷羊肉是否變壞?

如何判斷羊肉是否變壞?

重點摘要 羊肉會變質嗎? 如何判斷羊肉是否變壞? 過期羊肉還能食嗎? 羊肉可存放多久? 如何儲存羊肉? 羊肉可以冷凍嗎? 結論 羊肉會變質嗎? 會。脂肪多而易氧化,處理或存放唔好就會變壞。 如何判斷羊肉是否變壞? 顏色:紅轉黑,或出現綠斑。 脂肪:由白轉黃兼有酸味。 氣味:由輕...
如何判斷豬肉是否變壞?

如何判斷豬肉是否變壞?

重點摘要 豬肉會變質嗎? 如何判斷豬肉是否變壞? 過期豬肉還能食嗎? 豬肉可存放多久? 如何儲存豬肉? 豬肉可以冷凍嗎? 結論 豬肉會變質嗎? 會。豬肉表面水活度高,加上處理不潔或溫度過高,容易腐敗。 如何判斷豬肉是否變壞? 顏色:粉紅轉灰、發綠或出斑。 氣味:酸臭、腥臭味濃 ...
如何判斷牛肉是否變壞?

如何判斷牛肉是否變壞?

重點摘要 牛肉會變質嗎? 如何判斷牛肉是否變壞? 過期牛肉還能食嗎? 牛肉可存放多久? 如何儲存牛肉? 牛肉可以冷凍嗎? 結論 牛肉會變質嗎? 會。牛肉含高蛋白同水分,若溫度控制或衛生不當,細菌會快速繁殖,導致變壞。 如何判斷牛肉是否變壞? 顏色:鮮紅轉深褐甚至發黑;脂肪變黃。 ...
成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

在過去,注意力不足過動症(Attention-Deficit/Hyperactivity Disorder, ADHD)多被視為「小孩的病」,很多成年人小時候從未被評估或診斷。直到近年社會對心理健康重視度提升,許多成人才開始懷疑,自己長期以來的專注困難、健忘、衝動或時間管理不良,可能與 ADHD 有關。這種「晚發現」的情況相當普遍,也引發了問題:成年後是否值得接受 ADHD 診斷?

哪些職業對健康影響最大?科學與現實的分析

哪些職業對健康影響最大?科學與現實的分析

在現代社會中,工作佔據了人們生命中相當大的一部分。然而,不同職業對健康的風險並不相同。一些工作性質或環境,會顯著增加慢性病、心理壓力、甚至縮短壽命的風險。以下從科學研究與醫學角度,探討幾類對健康損害較大的職業,並附上相關統計數據。

電擊槍的機制與對人體健康影響

電擊槍的機制與對人體健康影響

在現代執法中,警察常使用所謂「非致命性武器」(less-lethal weapons),其中最廣為人知的便是 電擊槍(Taser)。電擊槍的設計初衷是提供一種介於徒手制服與槍械之間的選擇,藉由暫時性電擊使嫌疑人失去行動能力,以降低致命暴力發生的風險。然而,電擊槍並非完全無害,背後涉及的電流機制與人體生理反應值得深入探討。