What does dietary fat do in the body?

Dietary fat provides concentrated energy, supports cell membrane structure, and helps produce hormones. It also enables absorption of vitamins A, D, E, and K.

What are the main types of fat in foods?

The main types are unsaturated fats (mono- and polyunsaturated), saturated fats, and trans fats. Health guidance generally favors unsaturated fats and limits saturated and trans fats.

How much fat should I eat per day?

Needs vary by total calorie intake, activity level, and health goals. A common daily range is about 44–78 g, with emphasis on mostly unsaturated sources.

Why are unsaturated fats considered healthier?

Replacing saturated and trans fats with unsaturated fats can improve blood cholesterol levels. This pattern is associated with better cardiovascular risk profiles.

Which vitamins require fat for absorption?

Vitamins A, D, E, and K are fat-soluble and are absorbed better when consumed with dietary fat.

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Eicosapentaenoic acid (EPA)Vitamin D3 Docosahexaenoic acid (DHA)Zinc (Bisglycinate)

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Vitamin B

Vitamin B1 (Thiamine)

Vitamin B2 (Riboflavin)

Vitamin B3 (Niacin)

Vitamin B5 (Pantothenic Acid)

Vitamin B6 (Pyridoxine)

Vitamin B7 (Biotin)

Vitamin B9 (Folic Acid)

Vitamin B12 (Methylcobalamin)

Vitamin B12 (Cobalamin)

Vitamin A & Carotenoids

Vitamin C

Vitamin D

Vitamin E

Vitamin K

Vitaminoids

Trimethylglycine (Betaine)

NMN (Nicotinamide Mononucleotide)

Pyrroloquinoline Quinone (PQQ)

D-Chiro-Inositol

Coenzym Q10 (Ubiquinone)

Betaine HCL

Nicotinamide Riboside

Vitamin B8 (Myo-Inositol)

Choline

Citicoline (CDP-Choline)

Coenzyme Q10 (Ubiquinol)

Calcium

Calcium Alpha-Ketoglutarate

Magnesium

Magnesium Bisglycinate

Magnesium L-Threonate

Trace Minerals

Copper (Bisglycinate)

Chromium Picolinate

Manganese (Bisglycinate)

Zinc

Pentadecanoic Acid (C15:0)

Phosphatidylserine

R-Alpha Lipoic Acid

Black Cumin Oil

Extra Virgin Olive Oil

Ceratiq wheat oil extract

Phospholipids

Algae Oil

Fish Oil

Conjugated Linoleic Acid

Gamma-Aminobutyric Acid

Alpha-Linolenic Acid

Gamma-Linolenic Acid

Omega-3

Docosapentaenoic acid (DPA)

Eicosapentaenoic acid (EPA)

Docosahexaenoic acid (DHA)

AminoMar

Acetyl-L-Carnitine

PABA (para-aminobenzoic acid)

Essential Amino Acids

Conditionally Essential Amino Acids

L-Theanine

Non-Essential Amino Acids

Beta-Alanine

L-Cysteine Hydrochloride

Amino Acid Derivative

Taurine

Creatine (Hydrochloride)

L-Arginine Alpha-Ketoglutarate

Creatine (Monohydrate)

Akkermansia muciniphila

Lactobacillus Reuteri

Probiotics

Bifidobacterium longum BB536

Prebiotics

Stinging Nettle Extract

Pomegranate Polyphenols

Red Beet Extract

Pine Extract (Pycnogenol)

Oligomeric Proanthocyanidins (OPC)

Ashwagandha Root Extract

Methylsulfonylmethane (MSM)

Citrus Sinensis Extract

Horsetail Stem Extract

Flax Seed Extract

Sulforaphane Glucosinolate

Garlic Extract

Black Pepper

Apricot Kernel Extract

Lovage

Spiny Rest Harrow Root Extract

Juniper Berry Extract

Bearberry Leaf Extract

White Kidney Bean Extract

Lady’s Mantle Extract

Bitter Orange Extract

St. John’s Wort Extract

Japanese Knotweed Extract

Hydroxytyrosol/tyrosol

Olive extract

Sesame seed lignan extract

Broccoli Sprout Extract

Cranberry Extract

Flavon Glycosides

Gentian Root Extract

Griffonia simplicifolia Extract

Ajuga Turkestanica Extract

Amaranthus Leaf Extract

Banaba Extract

Boswellia Extract

Capsaicin

Cayenne Pepper Extract

Celery Extract

Ceylon Cinnamon Extract

Chamomile Extract

Charantin

Chinese Goldthread Root Extract

Citrus Aurantium Extract

Cocoa Extract

Cyanotis Arachnoidea Extract

Fadogia Agrestis Extract

Garcinia Cambogia Extract

Goldenrod Extract

Green Tea Extract

Guarana Extract

Horse Chestnut Extract

Grapefruit Seed Extract

Grape Vine Leaf Extract

Green Tea Polyphenols

Epigallocatechin Gallate (EGCG)

Adaptogens

Cordyceps sinensis extract

Ginsenoside

Lion's Mane (Hericium erinaceus)

Ginseng Extract

Cat's Claw (Uncaria tomentosa)

Arjuna (Terminalia arjuna)

Tribulus Terrestris Extract

Rhodiola rosea

Panax Ginseng Extract

Mushrooms

Reishi Extract

Astragalus Polysaccharides

Hyaluronic Acid

Glucosamine Sulfate

Chondroitin Sulfate

Glucosamine Sulphate 2KCL

Fat

Strong study situation·10/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Fat is an essential macronutrient that provides energy, supports cell and hormone health, and enables absorption of fat-soluble vitamins.

Cardiovascular Support Essential Nutrient Cholesterol Management Hormone Balance

dose range

44–78 g

Divided across meals

Consumption

Incorporate fats from healthy sources such as olive oil, nuts, avocados, and fatty fish throughout the day.

Fat-soluble: take with fat.

Best time

Best consumed with meals to support nutrient absorption; avoid high intake in a single meal.

Description

Dietary fats are crucial for many biological processes, including energy storage, cell membrane integrity, hormone production, and nutrient absorption. Recommended intake focuses on healthy unsaturated fats and limits saturated and trans fats.

benefits

Main effects with level of evidence

Strong

Note on evidence

Extensive research supports fat's essential biological roles, with robust guidelines and epidemiological evidence informing intake recommendations.

Energy Provision

Strong

Fat supplies 9 kcal per gram, serving as the body's most energy-dense fuel, essential for physical activity and metabolism.

Particularly relevant for: General public · Athletes · People with high energy needs

1 · PubMed 4 · NIH NHLBI 6 · Dietary Guidelines for Americans 2020-2025

Support for Cell Structure and Function

Strong

Dietary fats are integral components of cell membranes, maintaining their structure, fluidity, and function.

Particularly relevant for: General public · Children

2 · NIH ODS Fact Sheet 3 · PubMed

Hormone Production and Vitamin Absorption

Strong

Fats are necessary for the synthesis of major hormones and the absorption of fat-soluble vitamins A, D, E, and K.

Particularly relevant for: General public · Women · Elderly

2 · NIH ODS Fact Sheet 3 · PubMed 6 · Dietary Guidelines for Americans 2020-2025

Cardiovascular Health (with Healthy Fats)

Strong

Replacing saturated and trans fats with unsaturated fats can improve blood cholesterol levels and reduce heart disease risk.

Particularly relevant for: General public · People at risk for heart disease

6 · Dietary Guidelines for Americans 2020-2025 7 · Harvard T.H. Chan School of Public Health

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Fats are safe and crucial for health within recommended intakes, but excess, especially of saturated or trans fats, increases cardiometabolic risks.

warning notices

Excess total and saturated fat intake can increase cardiovascular risk.
Trans fats have been linked to higher risk of heart disease and should be minimized.
Certain medical conditions (e.g., gallstones, pancreatitis) may require reduced dietary fat.
Avoid excessive fat intake to reduce risk of weight gain and cardiovascular disease.
Minimize intake of trans fats to lower risk of heart disease.
Use only with clinician guidance if you have gallstones or pancreatitis.

Contraindications / special precautions