In an embodiment, a nutritional supplement including, about 0.5 mg to about 4 mg of folate, about 6.25 mg to about 50 mg of vitamin B-6, about 250 mcg to about 2000 mcg of vitamin B-12, about 75 mg to about 600 mg of coenzyme Q10 (CoQ10), about 1250 IU to about 10,000 IU of vitamin D3, about 25 mg to about 200 mg of magnesium, about 25 mg to 200 mg of N-acetyl-L-cysteine, about 5 mg to about 40 mg pyrroloquinoline quinone disodium (PQQ), about 25 mg to about 200 mg of curcumin extract, about 25 mg to about 200 mg of resveratrol, about 25 mg to about 200 mg berberine, about 12.5 mcg to about 100 mcg of chromium, and about 12.5 mcg to about 100 mcg of selenium. In an additional embodiment, the aforementioned nutritional supplement in a nutritional kit that further includes an omega-3 supplement.