Low ferritin and low Vitamin B3 can definitely contribute to increased hair fall, fatigue, and reduced overall strength because ferritin reflects your iron stores, which are important for healthy hair growth, and deficiencies can push more hair into the shedding phase. The most important step is correcting the deficiencies through a combination of diet and supplements, where iron-rich foods like green leafy vegetables, pulses, beans, jaggery in moderation, eggs, and lean meats can help improve iron stores, especially when taken with Vitamin C-rich foods like lemon or fruits to improve absorption. For Vitamin B3, foods like peanuts, whole grains, seeds, and fish can help gradually improve levels. Hair fall related to deficiencies usually does not improve immediately and may take 8-12 weeks or more to show a visible reduction because hair cycles are slow. Along with correction, maintaining good protein intake, reducing stress, sleeping well, and avoiding harsh chemical treatments or heat styling can support recovery. If hair fall is heavy or continuing despite correction, it is important to recheck ferritin levels and overall health, as thyroid imbalance or other deficiencies can sometimes also contribute.