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Morning sunlight on a table with milk, eggs, mushrooms and fish, foods that provide vitamin D

Vitamin D3 vs. D2: Which Form Should You Choose?

Both D2 and D3 raise vitamin D levels, but D3 tends to raise and sustain blood 25(OH)D more. Compare forms, sources, doses, and four 52nourish options by serving.

Vitamin D3 vs. D2: Which Form Should You Choose?

Both D2 and D3 raise vitamin D levels, but D3 tends to raise and sustain blood 25(OH)D more. Compare forms, sources, doses, and four 52nourish options by serving.

Bright kitchen scene with a glass of water, pumpkin seeds and almonds, leafy greens, and an unlabelled white supplement bottle

Magnesium Glycinate vs. Citrate vs. L-Threonate...

Glycinate, citrate, L-threonate, and oxide compared by elemental magnesium, absorption evidence, and bowel effects — plus a 30-second label checklist.

Magnesium Glycinate vs. Citrate vs. L-Threonate...

Glycinate, citrate, L-threonate, and oxide compared by elemental magnesium, absorption evidence, and bowel effects — plus a 30-second label checklist.

Bowl of smoothie, jar of collagen powder and glass of water with orange slices on a wooden table in morning light

Bovine vs. Marine Collagen: Which Type of Colla...

Type I, II, III — what collagen types really mean, how bovine and marine peptides compare in the research, and how to match a product to your goal (skin vs....

Bovine vs. Marine Collagen: Which Type of Colla...

Type I, II, III — what collagen types really mean, how bovine and marine peptides compare in the research, and how to match a product to your goal (skin vs....

Omega-3 sources: fish oil softgel, salmon pieces and olive oil on a light wooden table in morning light

Fish Oil vs. Krill Oil: Which Omega-3 Should Yo...

Fish oil or krill oil? Here is how the two omega-3 sources compare — what the studies say, how to read the label, and which product fits your needs.

Fish Oil vs. Krill Oil: Which Omega-3 Should Yo...

Fish oil or krill oil? Here is how the two omega-3 sources compare — what the studies say, how to read the label, and which product fits your needs.

Magnesium capsules in a glass bowl with a glass of water

Magnesium Glycinate vs. Citrate vs. Threonate: ...

Confused by magnesium glycinate, citrate, and threonate? Learn what each form is commonly chosen for and how to match the type to your goal.

Magnesium Glycinate vs. Citrate vs. Threonate: ...

Confused by magnesium glycinate, citrate, and threonate? Learn what each form is commonly chosen for and how to match the type to your goal.

Green smoothie with kale, spinach, matcha powder and kiwi

Greens Powders: How to Choose One That's Actual...

Not all greens powders are equal. Learn what to check on the label, which red flags to avoid, and how to pick a formula worth your money.

Greens Powders: How to Choose One That's Actual...

Not all greens powders are equal. Learn what to check on the label, which red flags to avoid, and how to pick a formula worth your money.